10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 30, 2012

Or

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from            to            

(Commission File Number) 000-30419

ON SEMICONDUCTOR CORPORATION

(Exact name of registrant as specified in its charter)

Delaware	36-3840979
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

5005 E. McDowell Road

Phoenix, AZ 85008

(602) 244-6600

(Address, zip code and telephone number, including area code, of principal executive offices)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x    No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer  x	Accelerated filer  ¨
Non-accelerated filer  ¨	Smaller reporting company  ¨
(Do not check if a smaller reporting company)

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ¨    No  x

The number of shares outstanding of the issuer’s class of common stock as of the close of business on April 26, 2012:

Title of Each Class	Number of Shares
Common Stock, par value $0.01 per share	454,082,151

INDEX

Part I: Financial Information
Item 1. Financial Statements (unaudited)	1
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations	31
Item 3. Quantitative and Qualitative Disclosures About Market Risk	47
Item 4. Controls and Procedures	48
Part II: Other Information
Item 1. Legal Proceedings	49
Item 1A. Risk Factors	49
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds	50
Item 3. Defaults Upon Senior Securities	50
Item 4. Mine Safety Disclosures	50
Item 5. Other Information	50
Item 6. Exhibits	51
Signatures	52
Exhibit Index	53

PART I: FINANCIAL INFORMATION

Item 1. Financial Statements (unaudited)

ON SEMICONDUCTOR CORPORATION AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEET

(in millions, except share and per share data)

(unaudited)

	March 30, 2012			December 31, 2011
Assets
Cash and cash equivalents	$	580.1		$	652.9
Short-term investments		312.2			248.6
Receivables, net		425.3			457.2
Inventories		633.7			637.4
Other current assets		76.8			121.6
Deferred income taxes, net of allowances		10.3			10.0
Total current assets		2,038.4			2,127.7
Property, plant and equipment, net		1,155.5			1,109.5
Deferred income taxes, net of allowances		30.1			34.2
Goodwill		198.7			198.7
Intangible assets, net		325.8			337.2
Other assets		80.7			76.2
Total assets	$	3,829.2		$	3,883.5
Liabilities, Minority Interests and Stockholders’ Equity
Accounts payable	$	408.6		$	451.8
Accrued expenses		238.5			239.8
Income taxes payable		2.8			7.5
Accrued interest		4.2			0.7
Deferred income on sales to distributors		153.5			172.0
Deferred income taxes, net of allowances		29.6			33.6
Current portion of long-term debt (See Note 6)		377.1			370.1
Total current liabilities		1,214.3			1,275.5
Long-term debt (See Note 6)		811.9			836.9
Other long-term liabilities		247.4			260.1
Deferred income taxes, net of allowances		21.1			17.5
Total liabilities		2,294.7			2,390.0
Commitments and contingencies (See Note 9)
ON Semiconductor Corporation stockholders’ equity:
Common stock ($0.01 par value, 750,000,000 shares authorized, 505,423,125 and 502,452,084 shares issued, 453,664,087 and 451,284,220 shares outstanding, respectively)		5.1			5.0
Additional paid-in capital		3,125.6			3,113.5
Accumulated other comprehensive loss		(41.6	)		(46.7	)
Accumulated deficit		(1,174.1	)		(1,202.3	)
Less: treasury stock, at cost; 51,759,038 and 51,167,864 shares, respectively		(406.6	)		(401.3	)
Total ON Semiconductor Corporation stockholders’ equity		1,508.4			1,468.2
Minority interests in consolidated subsidiaries		26.1			25.3
Total equity		1,534.5			1,493.5
Total liabilities and equity	$	3,829.2		$	3,883.5

See accompanying notes to consolidated financial statements

1

ON SEMICONDUCTOR CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(in millions, except per share data)

(unaudited)

	Quarter ended
	March 30, 2012			April 1, 2011
Revenues	$	744.4		$	870.6
Cost of product revenues		499.2			628.2
Gross profit		245.2			242.4
Operating expenses:
Research and development		91.4			91.1
Selling and marketing		45.6			49.4
General and administrative		42.0			47.1
Amortization of acquisition-related intangible assets		11.1			9.7
Restructuring, asset impairments and other, net		11.5			12.4
Total operating expenses		201.6			209.7
Operating income		43.6			32.7
Other income (expenses), net:
Interest expense		(15.7	)		(17.8	)
Interest income		0.5			0.3
Other		4.7			(2.5	)
Gain on SANYO Semiconductor acquisition		—			24.3
Other income (expenses), net		(10.5	)		4.3
Income before income taxes		33.1			37.0
Income tax provision		(4.1	)		(0.8	)
Net income		29.0			36.2
Less: Net income attributable to minority interests		(0.8	)		(0.7	)
Net income attributable to ON Semiconductor Corporation	$	28.2		$	35.5
Comprehensive income:
Net income	$	29.0		$	36.2
Foreign currency translation adjustments		4.9			0.4
Effects of cash flow hedges		(0.4	)		—
Unrealized gain on available-for-sale securities		0.5			—
Amortization of prior service costs of defined benefit plan		0.1			—
Comprehensive income		34.1			36.6
Comprehensive income attributable to minority interests		(0.8	)		(0.7	)
Comprehensive income attributed to ON Semiconductor Corporation:	$	33.3		$	35.9
Net income per common share attributable to ON Semiconductor Corporation:
Basic	$	0.06		$	0.08
Diluted	$	0.06		$	0.08
Weighted average common shares outstanding:
Basic		452.5			441.4
Diluted		460.6			456.0

See accompanying notes to consolidated financial statements

2

ON SEMICONDUCTOR CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENT OF CASH FLOWS

(in millions)

(unaudited)

	Quarter ended
	March 30, 2012			April 1, 2011
Cash flows from operating activities:
Net income	$	29.0		$	36.2
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		61.1			52.8
Gain on sale and disposal of fixed assets		(1.5	)		(2.1	)
Non-cash manufacturing expenses associated with favorable supply agreement		—			50.0
Gain on acquisition of SANYO Semiconductor		—			(24.3	)
Amortization of debt issuance costs and debt discount		0.5			0.6
Provision for excess inventories		15.8			1.7
Non-cash stock compensation expense		7.4			10.4
Non-cash interest		7.2			8.7
Deferred income taxes		3.2			3.2
Other		(0.5	)		(1.0	)
Changes in assets and liabilities (exclusive of the impact of acquisitions):
Receivables		27.3			(36.0	)
Inventories		(23.2	)		24.7
Other assets		30.2			25.1
Accounts payable		(81.2	)		(18.3	)
Accrued expenses		13.1			(29.3	)
Income taxes payable		(4.7	)		(3.0	)
Accrued interest		3.5			3.7
Deferred income on sales to distributors		(18.5	)		20.0
Other long-term liabilities		(0.3	)		2.5
Net cash provided by operating activities		68.4			125.6
Cash flows from investing activities:
Purchases of property, plant and equipment		(50.4	)		(88.7	)
Purchase of businesses, net of cash acquired		—			(57.6	)
Proceeds from sales of property, plant and equipment		1.9			—
Deposits utilized for purchases of property, plant and equipment		(9.6	)		—
Recovery from insurance on property, plant and equipment		11.5			—
Proceeds from held-to-maturity securities		99.7			—
Purchase of held-to-maturity securities		(163.3	)		—
Change in restricted cash		—			142.1
Net cash used in investing activities		(110.2	)		(4.2	)
Cash flows from financing activities:
Proceeds from issuance of common stock under the employee stock purchase plan		—			1.9
Proceeds from debt issuance		2.0			15.2
Proceeds from exercise of stock options		4.8			41.1
Payment of capital lease obligation		(11.4	)		(9.9	)
Purchase of treasury stock		(5.3	)		(7.6	)
Repayment of long-term debt		(15.6	)		(19.6	)
Net cash (used in) provided by financing activities		(25.5	)		21.1
Effect of exchange rate changes on cash and cash equivalents		(5.5	)		0.2
Net (decrease) increase in cash and cash equivalents		(72.8	)		142.7
Cash and cash equivalents, beginning of period		652.9			623.3
Cash and cash equivalents, end of period	$	580.1		$	766.0

See accompanying notes to consolidated financial statements

3

ON SEMICONDUCTOR CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

Note 1: Background and Basis of Presentation

ON Semiconductor Corporation (“ON Semiconductor”), together with its wholly and majority-owned subsidiaries (the “Company”), is a premier supplier of high performance, silicon solutions for energy efficient electronics. The Company’s broad portfolio of power and signal management, logic, discrete and custom devices helps customers efficiently solve their design challenges in automotive, communications, computing, consumer, industrial, LED lighting, medical, military/aerospace and power applications.

The accompanying unaudited financial statements as of March 30, 2012, and for the three months ended March 30, 2012 and April 1, 2011, respectively, have been prepared in accordance with generally accepted accounting principles for interim financial information. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for audited financial statements. In the opinion of the Company’s management, the interim information includes all adjustments, consisting only of normal recurring adjustments, necessary for a fair statement of the results for the interim periods. The footnote disclosures related to the interim financial information included herein are also unaudited. Such financial information should be read in conjunction with the consolidated financial statements and related notes thereto for the year ended December 31, 2011 included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2011 (“2011 Form 10-K”). The results for the interim periods are not necessarily indicative of the results of operations that may be expected for the full year.

The preparation of financial statements in accordance with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amount of assets and liabilities at the date of the financial statements and the reported amount of revenues and expenses during the reporting period. Significant estimates have been used by management in conjunction with the measurement of valuation allowances relating to trade and tax receivables, inventories and deferred tax assets; estimates of future payouts for customer incentives, warranties, and restructuring activities; assumptions surrounding future pension obligations and related trust returns; the fair value of stock options and of financial instruments (including derivative financial instruments); and future cash flows associated with long-lived assets and goodwill impairment charges. Actual results could differ from these estimates.

Revision of Prior Period Financial Statements

The Company has retrospectively adjusted the consolidated statement comprehensive income for the quarter ended April 1, 2011, primarily related to adjustments to the purchase price allocation of the SANYO Semiconductor Co. Ltd. (“SANYO Semiconductor”) acquisition, which resulted in a reduction of the gain on the SANYO Semiconductor acquisition. The Company originally reported a gain of $61.3 million which has been retrospectively adjusted to $24.3 million.

The following table presents the effects of the above adjustments on the Company’s consolidated statements of comprehensive income (in millions):

	For the Quarter Ended April 1, 2011
	As reported			As revised
Other income (expenses), net:
Other	$	(0.2	)	$	(2.5	)
Gain on SANYO Semiconductor acquisition		61.3			24.3
Net income attributable to ON Semiconductor Corporation	$	74.8		$	35.5
Net income per common share attributable to ON Semiconductor Corporation
Basic	$	0.17		$	0.08
Diluted	$	0.16		$	0.08

4

ON SEMICONDUCTOR CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — Continued

Note 2: Goodwill and Intangible Assets

Goodwill

The following table summarizes the original goodwill by relevant operating segment as of March 30, 2012 and December 31, 2011 (in millions):

	Balance as of March 30, 2012										Balance as of December 31, 2011
	Original Goodwill		Accumulated Amortization			Accumulated Impairment Losses			Carrying Value		Original Goodwill		Accumulated Amortization			Accumulated Impairment Losses			Carrying Value
Operating Segment:
Automotive, Industrial, Medical and Mil-Aero	$	556.6	$	(4.2	)	$	(406.0	)	$	146.4		556.6		(4.2	)		(406.0	)		146.4
Computing & Consumer Products		29.1		(5.6	)		—			23.5		29.1		(5.6	)		—			23.5
Standard Products		37.7		—			(8.9	)		28.8		37.7		—			(8.9	)		28.8
	$	623.4	$	(9.8	)	$	(414.9	)	$	198.7	$	623.4	$	(9.8	)	$	(414.9	)		198.7

Goodwill is tested for impairment annually on the first day of the fourth quarter unless a triggering event would require an expedited analysis. Adverse changes in operating results and/or unfavorable changes in economic factors used to estimate fair values could result in a non-cash impairment charge in the future. As of March 30, 2012, there were no triggering events which would require the Company to perform an impairment analysis.

Intangible Assets

Intangible assets, net were as follows as of March 30, 2012 and December 31, 2011 (in millions):

	March 30, 2012
	Original Cost		Accumulated Amortization			Foreign Currency Translation Adjustment			Impairment			Carrying Value		Useful Life (in Years)
Intellectual property	$	13.9	$	(8.2	)	$	—		$	—		$	5.7		5-12
Customer relationships		280.3		(77.0	)		(26.8	)		(3.2	)		173.3		5-18
Patents		43.7		(12.0	)		—			—			31.7		12
Developed technology		146.2		(39.2	)		—			(2.0	)		105.0		5-12
Trademarks		14.0		(3.9	)		—			—			10.1		15
In-process research and development		2.5		—			—			(2.5	)		—
Total intangibles	$	500.6	$	(140.3	)	$	(26.8	)	$	(7.7	)	$	325.8

5

ON SEMICONDUCTOR CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — Continued

	December 31, 2011
	Original Cost		Accumulated Amortization			Foreign Currency Translation Adjustment			Impairment			Carrying Value		Useful Life (in Years)
Intellectual property	$	13.9	$	(8.0	)	$	—		$	—		$	5.9		5-12
Customer relationships		280.3		(71.9	)		(26.5	)		(3.2	)		178.7		5-18
Patents		43.7		(10.4	)		—			—			33.3		12
Developed technology		145.6		(35.5	)		—			(2.0	)		108.1		5-12
Trademarks		14.0		(3.4	)		—						10.6		15
In-process research and development		3.1		—			—			(2.5	)		0.6
Total intangibles		500.6		(129.2	)		(26.5	)		(7.7	)		337.2

Amortization expense for intangible assets amounted to $11.1 million for the quarter ended March 30, 2012, none of which was included in cost of revenues; and was $10.3 million for the quarter ended April 1, 2011, of which $0.6 million was included in cost of revenues. The Company is currently amortizing fourteen projects totaling $33.4 million through developed technology relating to projects that were originally classified as in-process research and development at the time of acquisition, but which now have been completed and are being amortized over a weighted average useful life of 8.5 years. Amortization expense for intangible assets, is expected to be as follows over the next five years, and thereafter (in millions):

	Total
Remainder of 2012	$	33.3
2013		39.7
2014		38.5
2015		37.4
2016		34.4
Thereafter		142.5
Total estimated amortization expense	$	325.8

Note 3: New Accounting Pronouncements

ASU No. 2011-05, “Comprehensive Income (Topic 220): Presentation of Comprehensive Income” (“ASU 2011-05”) and ASU 2011-12, “Comprehensive Income (Topic 220): Deferral of the Effective Date for Amendments to the Presentation of Reclassifications of Items Out of Accumulated Other Comprehensive Income in Accounting Standards Update No. 2011-05” (“ASU 2011-12”)

ASU 2011-05 allows an entity to present components of net income and other comprehensive income in one continuous statement, referred to as the statement of comprehensive income, or in two separate, but consecutive statements. The new guidance eliminated the previous option to report other comprehensive income and its components in the statement of changes in equity. While ASU 2011-05 changes the presentation of comprehensive income, there were no changes to the components that are recognized in net income or other comprehensive income under current accounting guidance. The Company adopted this guidance effective in the first quarter of fiscal 2012. The adoption of ASU 2011-05 and the deferrals in ASU 2011-12 did not have a material impact on the Company’s Consolidated Financial Statements.

6

ON SEMICONDUCTOR CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — Continued

Note 4: Restructuring, Asset Impairments and Other, Net

A summary description of the activity included in the “Restructuring, Asset Impairments and Other, Net” caption on the consolidated statement of comprehensive income for the quarter ended March 30, 2012 is as follows (in millions):

	Restructuring		Other		Total
Three months ended March 30, 2012
Thailand facility closure	$	1.5	$	1.8	$	3.3
Aizu facility closure		5.8		0.1		5.9
SANYO Semiconductor consolidation		—		2.3		2.3
Total	$	7.3	$	4.2	$	11.5

The following is a rollforward of the accrued restructuring charges from December 31, 2011 to March 30, 2012 (in millions):

	Balance as of December 31, 2011		Charges		Usage			Adjustments			Balance as of March 30, 2012
Estimated employee separation charges:	$	8.9	$	7.3	$	(1.5	)	$	(0.8	)	$	13.9
Estimated costs to exit:	$	8.4	$	2.4	$	(0.5	)	$	—		$	10.3

The activity related to the Company’s restructuring, asset impairments and other, net for programs that were either initiated in 2012 or had not been completed as of March 30, 2012, are as follows:

Thailand Facility Closure

Cumulative charges of $15.2 million, net of adjustments, have been recognized through March 30, 2012, related to the 2011 announced plan to close our probe, assembly and test operations in Ayutthaya, Thailand and to partially close our Bang Pa In, Thailand facility as a result of the flooding in these regions. During the fourth quarter of 2011, a total of approximately 1,600 employees were asked to resign due to such closures. As of March 30, 2012, a total of 45 employees remained to be exited. For the quarter ended March 30, 2012, the Company recorded employee separation charges of approximately $1.5 million related to these terminations. Additionally, the Company recorded net other charges of $1.8 million, which represented $2.3 million of costs incurred associated with the closure and partial closure of these facilities, partially offset by $0.5 million of additional insurance proceeds. These charges have been included in restructuring, asset impairments and other, net on the consolidated statement of comprehensive income for the three months ended March 30, 2012.

The accrued liability associated with employee separation charges as of March 30, 2012 was $0.8 million.

Aizu Facility Closure

Cumulative charges of $75.9 million, net of adjustments, have been recognized through March 30, 2012, related to the announced closure of the Company’s Aizu facility, for cost savings purposes. As of March 30, 2012, a total of 207 employees were notified that their employment with the Company would be terminated due to the closure of the Aizu facility. As of March 30, 2012, none of these employees had been exited. For the quarter ended March 30, 2012, the Company recognized restructuring charges of $5.8 million related to severance benefits for employees required to give further services prior to receiving these termination benefits. Additionally, the Company recorded $0.1 million of additional exit costs associated with this closure. These charges have been included in restructuring, asset impairments and other, net on the consolidated statement of comprehensive income for the three months ended March 30, 2012.

7

ON SEMICONDUCTOR CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — Continued

The accrued liability associated with employee separation charges at the Aizu facility as of March 30, 2012 was $11.5 million. Additionally, the Company expects to incur additional employee separation charges of $2.8 million and $2.9 million of exit costs during the remainder of 2012 associated with this closure.

SANYO Semiconductor Consolidation

Cumulative charges of $12.3 million, net of adjustments, have been recognized through March 30, 2012, related to the 2011 announced plans to integrate and restructure the operations of SANYO Semiconductor and the Company, in part, for cost savings purposes. For the quarter ended March 30, 2012, the Company recorded an incremental $2.3 million of exit costs relating to the consolidation of factories. These charges have been included in restructuring, asset impairments and other, net on the consolidated statement of comprehensive income for the three months ended March 30, 2012.

2011 Global Workforce Reduction

Cumulative charges of $2.5 million, net of adjustments, have been recognized through March 30, 2012 related to the announced plans to reduce worldwide personnel for cost savings purposes. During the third quarter of 2011, a total of 42 employees were notified that their employment with the Company would be terminated due to their positions being eliminated or consolidated in connection with this restructuring. As of the end of the first quarter of 2012, six of these employees still remained employed by the Company. We expect that all remaining notified individuals will be officially separated from the Company in the fourth quarter of 2012, with all related benefit payments being made in the same period. As of March 30, 2012, the Company had accrued $1.4 million for employee separation charges associated with this activity.

2011 Closure of the Phoenix, Arizona Wafer Manufacturing Facility

Cumulative charges of $4.3 million, have been recognized through March 30, 2012, related to the 2011 closure of the Phoenix, Arizona wafer manufacturing facility.

In the second quarter of 2011, the Company proceeded with its previously announced plans to close the Phoenix, Arizona wafer manufacturing facility for cost saving purposes. A total of 166 employees were notified that their employment with the Company would be terminated due to their positions being eliminated or consolidated in connection with this restructuring. As of March 30, 2012, 10 of these employees remained employed by the Company. The Company had $0.1 million accrued for employee separation charges for the remaining 10 employees who are expected to be separated by the end of the third quarter of 2012.

Acquisition of AMIS Holdings, Inc. (“AMIS”)

The Company had $8.1 million of accrued liabilities for estimated costs to exit certain activities of AMIS which was acquired in March 2008, of which $0.1 million were for employee separation costs and $8.0 million were for exit costs outstanding as of March 30, 2012. During the quarter ended March 30, 2012, the Company paid decommissioning costs resulting from the shutdown of a fabrication facility of $0.1 million. All payments related to these activities are expected to be completed by the end of the third quarter of fiscal 2012.

8

ON SEMICONDUCTOR CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — Continued

Note 5: Balance Sheet Information

	March 30, 2012			December 31, 2011
	(in millions)			(in millions)
Receivables, net:
Accounts receivable	$	431.6		$	464.3
Less: Allowance for doubtful accounts		(6.3	)		(7.1	)
	$	425.3		$	457.2
Inventories:
Raw materials	$	61.8		$	58.8
Work in process		414.2			430.8
Finished goods		157.7			147.8
	$	633.7		$	637.4
Property, plant and equipment, net:
Land	$	74.3		$	76.6
Buildings		537.7			539.3
Machinery and equipment		1,997.6			1,943.0
Total property, plant and equipment		2,609.6			2,558.9
Less: Accumulated depreciation		(1,454.1	)		(1,449.4	)
	$	1,155.5		$	1,109.5
Accrued expenses:
Accrued payroll	$	127.9		$	125.2
Sales related reserves		53.8			45.5
Restructuring reserves		24.2			17.3
Accrued pension liability		9.8			11.4
Other		22.8			40.4
	$	238.5		$	239.8
Accumulated other comprehensive loss:
Foreign currency translation adjustments	$	(41.6	)	$	(46.5	)
Unrecognized prior service cost of defined benefit pension plan		(0.1	)		(0.2	)
Effect of cash flow hedges		(0.4	)		—
Unrealized gain on available for sale securities		0.5			—
	$	(41.6	)	$	(46.7	)

Included in accumulated other comprehensive loss as of March 30, 2012, and December 31, 2011, is $18.9 million and $18.5 million, respectively, of foreign currency translation gains related to our Aizu, Japan facility. As further described in Note 4: “Restructuring, Asset Impairments and Other, Net,” the Company intends to close its Aizu, Japan facility during 2012. After the operational closure is complete, the Company will proceed to liquidate and wind-down the legal entity. As required by accounting standards, when the liquidation is substantially complete, the Company will recognize in results of operations any amount remaining in accumulated other comprehensive income.

9

ON SEMICONDUCTOR CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — Continued

Warranty Reserves

The activity related to our warranty reserves for the three months ended March 30, 2012 and April 1, 2011, respectively, is as follows (in millions):

	Quarter Ended
	March 30, 2012			April 1, 2011
Beginning Balance	$	5.8		$	3.3
Provision		0.1			0.6
Usage		(0.2	)		—
Ending Balance	$	5.7		$	3.9

Defined Benefit Plans

The Company maintains defined benefit plans for some of its foreign subsidiaries. The Company recognizes the aggregate amount of all overfunded plans as assets and the aggregate amount of all underfunded plans as liabilities in its financial statements. As of March 30, 2012, the total accrued pension liability for underfunded plans was $67.5 million, of which the current portion of $9.8 million was classified as accrued expenses. As of December 31, 2011, the total accrued pension liability for underfunded plans was $83.3 million, of which the current portion of $11.4 million, was classified as accrued expenses. As of March 30, 2012 and December 31, 2011, the total pension asset for overfunded plans was $12.5 million and $12.4 million, respectively. The components of the Company’s net periodic pension expense for the quarters ended March 30, 2012 and April 1, 2011 are as follows (in millions):

	Quarter Ended
	March 30, 2012			April 1, 2011
Service cost	$	2.2		$	2.3
Interest cost		1.3			1.3
Expected return on plan assets		(1.0	)		(1.0	)
Amortization of prior service cost		0.1			0.1
Total net periodic pension cost	$	2.6		$	2.7

Multiemployer Defined Benefit Plans

Included in other long-term liabilities as of March 30, 2012 and December 31, 2011, are the estimated liabilities of $140.1 million and $151.0 million, respectively, which represent the Company’s estimated portion of underfunded pension obligations relating to certain employees participating in certain SANYO Electric Co. Ltd., (“SANYO Electric”) multiemployer defined benefit pension plans from which the Company intends to withdraw. During the quarters ended March 30, 2012 and April 1, 2011, the Company recorded $2.9 million and $2.9 million, respectively, of expense associated with the Company’s participation in the SANYO Electric multiemployer pension plans.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — Continued

Note 6: Long-Term Debt

Long-term debt consists of the following (dollars in millions):

	March 30, 2012			December 31, 2011
Senior Revolving Credit Facility (up to $325.0 million)	$	—		$	—
Loan with a Japanese company due 2012 through 2018, interest payable quarterly at 2.22% and 2.33%, respectively (1)		330.3			339.8
Zero Coupon Convertible Senior Subordinated Notes due 2024 (net of discount of $0.3 million and $2.0 million, respectively) (2)		95.9			94.2
1.875% Convertible Senior Subordinated Notes due 2025 (net of discount of $4.9 million and $6.6 million, respectively) (3)		90.1			88.4
2.625% Convertible Senior Subordinated Notes due 2026 (net of discount of $21.6 million and $24.5 million, respectively) (4)		210.8			207.9
2.625% Convertible Senior Subordinated Notes due 2026, Series B (net of discount of $21.1 million and $22.0 million, respectively) (5)		177.5			176.6
Loan with Hong Kong bank, interest payable weekly at 1.99% and 2.04%, respectively		40.0			40.0
Loans with Philippine banks due 2012 through 2015, interest payable monthly and quarterly at an average rate of 2.01% and 2.01%, respectively		65.5			68.2
Loans with Chinese bank due 2013, interest payable quarterly at 4.33% and 4.44%, respectively		7.0			7.0
Loans with Japanese banks due through 2013, interest payable monthly and semi-annually at an average rate of 1.72% and 1.71%, respectively		3.1			3.5
Loan with Singapore bank, interest payable weekly at 1.97% and 1.97%, respectively		27.0			25.0
Loan with British finance company, interest payable monthly at 1.95% and 2.42%, respectively		10.9			13.1
U.S. real estate mortgages payable monthly through 2016 at an average rate of 4.857%		31.2			31.6
U.S. equipment financing payable monthly through 2015 at 3.23%		10.1			10.8
Capital lease obligations		89.6			100.9
Long-term debt, including current maturities		1,189.0			1,207.0
Less: Current maturities		(377.1	)		(370.1	)
Long-term debt	$	811.9		$	836.9

(1) This loan represents Semiconductor Component Industries, LLC (“SCI LLC”) unsecured loan with SANYO Electric, which is guaranteed by the Company.

(2) The Zero Coupon Convertible Senior Subordinated Notes due 2024 may be put back to the Company at the option of the holders of the notes on April 15 of 2012, 2014 and 2019 or called at the option of the Company on or after April 15, 2012. See Note 15: “Subsequent Events” of this Form 10-Q for the discussion of the retirement of the Zero Coupon Convertible Senior Subordinated Notes due 2024.

(3) The 1.875% Convertible Senior Subordinated Notes due 2025 may be put back to the Company at the option of the holders of the notes on December 15 of 2012, 2015 and 2020 or called at the option of the Company on or after December 20, 2012.

(4) The 2.625% Convertible Senior Subordinated Notes due 2026 may be put back to the Company at the option of the holders of the notes on December 15 of 2013, 2016 and 2021 or called at the option of the Company on or after December 20, 2013.

(5) The 2.625% Convertible Senior Subordinated Notes due 2026, Series B may be put back to the Company at the option of the holders of the notes on December 15 of 2016 and 2021 or called at the option of the Company on or after December 20, 2016.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — Continued

Expected maturities relating to the Company’s long-term debt as of March 30, 2012 are as follows (in millions):

	Expected Maturities
Remainder of 2012		353.7
2013		328.6
2014		75.3
2015		63.5
2016		262.2
Thereafter		153.6
Total	$	1,236.9

For purposes of the table above, the convertible debt issuances are assumed to mature at their respective put dates. The table also reflects aggregate principal payments of $622.2 million relating to the Zero Coupon Convertible Senior Subordinated Notes due 2024, the 1.875% Convertible Senior Subordinated Notes due 2025, the 2.625% Convertible Senior Subordinated Notes due 2026 and the 2.625% Convertible Senior Subordinated Notes due 2026, Series B.

Debt Guarantees

ON Semiconductor is the sole issuer of the Zero Coupon Convertible Senior Subordinated Notes due 2024, the 1.875% Convertible Senior Subordinated Notes due 2025, the 2.625% Convertible Senior Subordinated Notes due 2026 and the 2.625% Convertible Senior Subordinated Notes due 2026, Series B (collectively, the “Convertible Notes”). See Note 14: “Guarantor and Non-Guarantor Statements” for the condensed consolidated financial information for the issuer of the Convertible Notes, the Guarantor Subsidiaries and the Non-Guarantor Subsidiaries.

Note 7: Earnings Per Share and Equity

Earnings Per Share

Calculations of net income per common share attributable to ON Semiconductor are as follows (in millions, except per share data):

	Quarter Ended
	March 30, 2012		April 1, 2011
Net income applicable to ON Semiconductor Corporation	$	28.2	$	35.5
Basic weighted average common shares outstanding		452.5		441.4
Add: Incremental shares for:
Dilutive effect of stock options and awards		5.1		10.8
Dilutive effect of convertible notes		3.0		3.8
Diluted weighted average common shares outstanding		460.6		456.0
Net income per common share attributable to ON Semiconductor Corporation
Basic:	$	0.06	$	0.08
Diluted:	$	0.06	$	0.08

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — Continued

Basic income per common share is computed by dividing net income attributable to ON Semiconductor by the weighted average number of common shares outstanding during the period.

The number of incremental shares from the assumed exercise of stock options and assumed issuance of restricted stock units is calculated by applying the treasury stock method. Common shares related to the employee stock options where the exercise price exceeded the average market price of the Company’s common shares for the period have been anti-dilutive and were excluded from the diluted net income per share calculation. The excluded option shares were 11.3 million and 6.1 million for the quarters ended March 30, 2012 and April 1, 2011, respectively.

The incremental shares related to the Company’s Zero Coupon Convertible Senior Subordinated Notes due 2024, 2.625% Convertible Senior Subordinated Notes due 2026 (including Series B notes), and the 1.875% Convertible Senior Subordinated Notes due 2025 (collectively, the “Convertible Notes”) is determined in accordance with the net share settlement requirements prescribed by ASC Topic 260, Earnings Per Share (“ASC 260”). Under the net share settlement calculation, the Convertible Notes are assumed to be convertible into cash up to the par value, with the excess of par value being convertible into common stock. The dilutive effect occurs when the stock price exceeds the conversion price for each of the Convertible Notes, as of the end of the period, or as described in ASC 260, for year-to-date calculations. In periods when the share price is lower than the conversion price, the impact is anti-dilutive and therefore has no impact on the Company’s earnings per share calculations.

Equity

Treasury stock is recorded at cost and is presented as a reduction of stockholders’ equity in the accompanying consolidated financial statements. Shares withheld upon the vesting of restricted stock units to pay applicable employee withholding taxes are considered common stock repurchases. Upon vesting, the Company currently does not collect the applicable employee withholding taxes from employees. Instead, the Company automatically withholds, from the restricted stock units that vest, the portion of those shares with a fair market value equal to the amount of the employee withholding taxes due, which is accounted for as a repurchase of common stock. The Company then pays the applicable withholding taxes in cash. The amounts remitted in the quarter ended March 30, 2012 were $5.3 million, for which the Company withheld 591,174 shares of common stock that were underlying the restricted stock units that vested. None of these shares had been reissued or retired as of March 30, 2012, but may be reissued or retired by the Company at a later date.

At December 31, 2011, the minority interest balance was $25.3 million. This balance was increased to $26.1 million at March 30, 2012 due to the minority interest’s $0.8 million share of the earnings for the quarter.

At December 31, 2010, the minority interest balance was $22.0 million. This balance increased to $22.7 million at April 1, 2011 due to the minority interest’s $0.7 million share of the earnings for the quarter.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — Continued

Note 8: Share-Based Compensation

Total share-based compensation expense related to the Company’s employee stock options, restricted stock units and employee stock purchase plan (“ESPP”) for the quarters ended March 30, 2012 and April 1, 2011 were comprised as follows (in millions):

	Quarter Ended
	March 30, 2012		April 1, 2011
Cost of revenues	$	1.4	$	1.9
Research and development		1.6		2.0
Selling and marketing		1.6		1.9
General and administrative		2.8		4.6
Share-based compensation expense before income taxes	$	7.4	$	10.4
Related income tax benefits (1)		—		—
Share-based compensation expense, net of taxes	$	7.4	$	10.4

(1) Most of the Company’s share-based compensation relates to its domestic subsidiaries, which have historically experienced recurring net operating losses; therefore, no related tax benefits are recorded.

At March 30, 2012, total unrecognized estimated share-based compensation expense, net of estimated forfeitures, related to non-vested stock options granted prior to that date was $10.0 million. At March 30, 2012, total unrecognized share-based compensation expense, net of forfeitures, related to non-vested restricted stock units with time-based service conditions and performance-based vesting criteria granted prior to that date was $45.9 million. The total intrinsic value of stock options exercised during the quarter ended March 30, 2012 was $3.4 million. The Company recorded cash received from the exercise of stock options of $4.8 million and no related tax benefits during the quarter ended March 30, 2012.

Share-Based Compensation Information

The fair value of each option grant is estimated on the date of grant using a lattice-based option valuation model. The lattice-based model uses: (1) a constant volatility; (2) an employee exercise behavior model (based on an analysis of historical exercise behavior); and (3) the treasury yield curve to calculate the fair value of each option grant.

The weighted-average estimated fair value of employee stock options granted during the quarters ended March 30, 2012 and April 1, 2011 was $3.41 per share and $4.22 per share, respectively, and was calculated using the lattice-based model with the following weighted-average assumptions (annualized percentages):

	Quarter Ended
	March 30, 2012		April 1, 2011
Volatility		46.7%		41.0%
Risk-free interest rate		0.9%		2.1%
Expected term		4.8 years		4.9 years

Share-based compensation expense recognized in the Consolidated statement of comprehensive income is based on awards ultimately expected to vest. Forfeitures are estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. Pre-vesting forfeitures for stock

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — Continued

options were estimated to be approximately 11% and 12% in the quarters ended March 30, 2012 and April 1, 2011, respectively. Pre-vesting forfeitures for restricted stock units were estimated to be approximately 4% and 12% in the quarters ended March 30, 2012 and April 1, 2011, respectively.

Shares Available

As of December 31, 2011, there was an aggregate of 17.4 million shares of common stock available for grant under the Company’s Amended and Restated Stock Incentive Plan (the “Amended and Restated SIP”) and 4.1 million shares available for issuance under the ESPP. As of March 30, 2012, there was an aggregate of 11.5 million shares of common stock available for grant under the Amended and Restated SIP and 4.1 million shares available for issuance under the ESPP.

Stock Options

A summary of stock option transactions follows (in millions except per share and term data):

	Quarter Ended March 30, 2012
	Number of Shares			Weighted-Average Exercise Price		Weighted Average Remaining Contractual Term (in years)		Aggregate Intrinsic Value (In-The-Money)
Outstanding at December 31, 2011		18.7		$	7.70
Granted		1.4			8.40
Exercised		(0.9	)		4.99
Canceled		(0.2	)		7.63
Outstanding at March 30, 2012		19.0		$	7.88		4.6	$	29.8
Exercisable at March 30, 2012		14.8			7.84		4.1	$	25.2

Additional information about stock options outstanding at March 30, 2012 with exercise prices less than or above $9.01 per share, the closing price of the Company’s common stock at March 30, 2012, follows (number of shares in millions):

	Exercisable				Unexercisable				Total
Exercise Prices	Number of Shares		Weighted Average Exercise Price		Number of Shares		Weighted Average Exercise Price		Number of Shares		Weighted Average Exercise Price
Less than $9.01		8.5	$	6.04		3.5	$	7.74		12.0	$	6.54
Above $9.01		6.3	$	10.28		0.7	$	9.73		7.0	$	10.22
Total Outstanding		14.8	$	7.84		4.2	$	8.07		19.0	$	7.88

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — Continued

Restricted Stock Units

Restricted stock units vest over one to three years with service-based requirements or performance-based requirements and are payable in shares of the Company’s common stock upon vesting. The following table presents a summary of the status of the Company’s restricted stock units granted to certain officers and employees of the Company as of March 30, 2012, and changes during the three months ended March 30, 2012 (number of shares in millions):

	Quarter Ended March 30, 2012
	Number of Shares			Weighted-Average Grant Date Fair Value
Nonvested shares of restricted stock units at December 31, 2011		9.6		$	7.95
Granted		3.1			8.40
Released		(2.0	)		5.75
Forfeited		(0.1	)		8.69
Nonvested shares of restricted stock units at March 30, 2012		10.6		$	8.49

Note 9: Commitments and Contingencies

Leases

The following is a schedule by year of future minimum lease obligations under non-cancelable operating leases as of March 30, 2012 (in millions):

Remainder of 2012		24.3
2013		20.6
2014		16.8
2015		14.1
2016		12.3
Thereafter		26.6
Total	$	114.7

Other Contingencies

The Company’s headquarters in Phoenix, Arizona are located on property that is a “Superfund” site, a property listed on the National Priorities List and subject to clean-up activities under the Comprehensive Environmental Response, Compensation, and Liability Act. Motorola, Inc. (“Motorola”), and now Freescale Semiconductor, Inc. (“Freescale”), have been involved in the cleanup of on-site solvent contaminated soil and groundwater and off-site contaminated groundwater pursuant to consent decrees with the State of Arizona. As part of the Company’s August 4, 1999 recapitalization (“Recapitalization”), Motorola retained responsibility for this contamination, and Motorola and Freescale have agreed to indemnify the Company with respect to remediation costs and other costs or liabilities related to this matter.

As part of the Recapitalization, the Company was granted various manufacturing facilities, one of which was located in the Czech Republic. In regards to this site, the Company has ongoing remediation projects to respond to releases of hazardous substances that occurred prior to the Recapitalization during the years that this facility was operated by government-owned entities. In each case, the remediation project consists primarily of monitoring groundwater wells located on-site and off-site with additional action plans developed to respond in

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — Continued

the event activity levels are exceeded at each of the respective locations. The government of the Czech Republic has agreed to indemnify the Company and the respective subsidiaries, subject to specified limitations, for remediation costs associated with this historical contamination. Based upon the information available, total future remediation costs to the Company are not expected to be material.

The Company’s design center in East Greenwich, Rhode Island is located on property that has localized soil contamination. In connection with the purchase of the facility, the Company entered into a Settlement Agreement and Covenant Not To Sue with the State of Rhode Island. This agreement requires that remedial actions be undertaken and a quarterly groundwater monitoring program be initiated by the former owners of the property. Based on the information available, any costs to the Company in connection with this matter are not expected to be material.

As a result of the acquisition of AMIS, the Company is a “primary responsible party” to an environmental remediation and cleanup at AMIS’s former corporate headquarters in Santa Clara, California. Costs incurred by AMIS include implementation of the clean-up plan, operations and maintenance of remediation systems, and other project management costs. However, AMIS’s former parent company, a subsidiary of Nippon Mining, contractually agreed to indemnify AMIS and the Company for any obligation relating to environmental remediation and cleanup at this location. The Company has not offset the receivable from Nippon Mining’s subsidiary against the estimated liability on the consolidated balance sheet. Therefore, a receivable from Nippon Mining’s subsidiary is recorded on the accompanying consolidated balance sheet as of March 30, 2012 related to this matter for approximately $0.1 million. The Company does not believe that the liability and receivable amounts are material to the Company’s consolidated financial position, results of operations or cash flow.

The Company’s facility in Aizu, Japan is located on property where soil and ground water contamination has been detected. The Company believes that the contamination originally occurred during a time when the facility was operated by a prior owner. The Company is working with local authorities to determine the appropriate remediation actions and expects remediation costs, subject to certain limitations, to be indemnified pursuant to an agreement between the Company and the prior owner or covered by insurance subject to a deductible. Based on information available, any costs to the Company in connection with this matter are not expected to be material.

In the normal course of business, the Company provides standby letters of credit or other guarantee instruments to certain parties initiated by either the Company or its subsidiaries, as required for transactions such as material purchase commitments, agreements to mitigate collection risk, leases or customs guarantees. The Company’s senior revolving credit facility includes a $40.0 million availability for the issuance of letters of credit. A $0.2 million letter of credit was outstanding under the senior revolving credit facility as of March 30, 2012. A bank guarantee issued on behalf of the Company under a non-reusable commitment credit with the bank has an outstanding amount of $3.6 million as of March 30, 2012. The Belgian bank that issued the guarantee has the right to create a mortgage on the real property of one of the Company’s European subsidiaries in the amount of $3.0 million, but had not done so as of March 30, 2012. The Company also had outstanding guarantees and letters of credit outside of its senior revolving credit facility and its non-reusable commitment credit totaling $10.1 million as of March 30, 2012.

As part of securing financing in the normal course of business, the Company issued guarantees related to its receivables financing, capital lease obligations and real estate mortgages which totaled approximately $110.1 million as of March 30, 2012. The Company is also a guarantor of SCI LLC’s unsecured loan with SANYO Electric, which had a balance of $330.3 million as of March 30, 2012. See Note 6: “Long-Term Debt” for further information on this loan.

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ON SEMICONDUCTOR CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — Continued

For its operating leases, the Company expects to make cash payments and similarly incur expenses totaling $114.7 million as payments come due. The Company has not recorded any liability in connection with these operating leases, letters of credit and guarantee arrangements.

Based on historical experience and information currently available, the Company believes that in the foreseeable future it will not be required to make payments under the standby letters of credit or guarantee arrangements.

Indemnification Contingencies

The Company is a party to a variety of agreements entered into in the ordinary course of business pursuant to which it may be obligated to indemnify the other parties for certain liabilities that arise out of or relate to the subject matter of the agreements. Some of the agreements entered into by the Company require it to indemnify the other party against losses due to intellectual property infringement, property damage including environmental contamination, personal injury, failure to comply with applicable laws, the Company’s negligence or willful misconduct, or breach of representations and warranties and covenants related to such matters as title to sold assets.

The Company faces risk of exposure to warranty and product liability claims in the event that its products fail to perform as expected or such failure of its products results, or is alleged to result, in bodily injury or property damage (or both). In addition, if any of the Company’s designed products are alleged to be defective, the Company may be required to participate in their recall. Depending on the significance of any particular customer and other relevant factors, the Company may agree to provide more favorable indemnity rights to such customer for valid warranty claims.

The Company has, from time to time, been active in merger and acquisition activity. In connection with these mergers or acquisitions, the Company has agreed to indemnify the other party or parties to the merger or acquisition agreement for certain claims or occurrences, limited in most instances by time and/or monetary amounts.

The Company and its subsidiaries provide for indemnification of directors, officers and other persons in accordance with limited liability agreements, certificates of incorporation, by-laws, articles of association or similar organizational documents, as the case may be. The Company maintains directors’ and officers’ insurance, which should enable it to recover a portion of any future amounts paid.

In addition to the above, from time to time the Company provides standard representations and warranties to counterparties in contracts in connection with sales of its securities and the engagement of financial advisers and also provides indemnities that protect the counterparties to these contracts in the event they suffer damages as a result of a breach of such representations and warranties or in certain other circumstances relating to the sale of securities or their engagement by the Company.

While the Company’s future obligations under certain agreements may contain limitations on liability for indemnification, other agreements do not contain such limitations and under such agreements it is not possible to predict the maximum potential amount of future payments due to the conditional nature of the Company’s obligations and the unique facts and circumstances involved in each particular agreement. Historically, payments made by the Company under any of these indemnities have not had a material effect on the Company’s business, financial condition, results of operations or cash flows. Additionally, the Company does not believe that any amounts that it may be required to pay under these indemnities in the future will be material to the Company’s business, financial position, results of operations or cash flows.

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ON SEMICONDUCTOR CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — Continued

Legal Matters

The Company is currently involved in a variety of legal matters that arise in the normal course of business. Based on information currently available, management does not believe that the ultimate resolution of these matters, including the matters described or referred to in the next paragraphs will have a material effect on the Company’s financial condition, results of operations or cash flows. However, because of the nature and inherent uncertainties of litigation, should the outcome of these actions be unfavorable, the Company’s business, consolidated financial position, results of operations or cash flows could be materially and adversely affected.

On December 15, 2010, a lawsuit was filed in the United States District Court for the District of Delaware (the “Court”) captioned Robert A. Lorber v. Francis P. Barton, George H. Cave, Donald A. Colvin, Curtis J. Crawford, Ph.D., Emmanuel T. Hernandez, Phillip D. Hester, Keith D. Jackson, J. Daniel McCranie, Robert Mahoney, W. John Nelson, Daryl Ostrander, Robert H. Smith, and ON Semiconductor Corporation, C.A. No. 1:10-CV-01101-GMS. The lawsuit was brought by a stockholder of ON Semiconductor and alleges generally that (1) ON Semiconductor’s 2010 proxy statement contained materially false and misleading information regarding the Amended and Restated SIP in violation of the federal securities laws; (2) the Amended and Restated SIP was defective and, thus, any awards made pursuant to the Amended and Restated SIP would not be tax-deductible pursuant to Section 162(m) of the Internal Revenue Code and applicable regulations; and (3) the individual defendants (who are ON Semiconductor officers and directors) violated their state law fiduciary duties and wasted corporate assets in connection with the adoption of the Amended and Restated SIP. The Company moved to dismiss the lawsuit. On March 2, 2012, the parties entered into a stipulation of settlement (the “Settlement Stipulation”) that sets forth the terms of a settlement which, if approved by the Court, will result in the dismissal of this action. In the Settlement Stipulation, the Company and the other individual defendants have denied and continue to deny that they committed any of the wrongful acts alleged in this lawsuit, and maintain that they have diligently, scrupulously, and meticulously complied with their fiduciary and other legal duties. On March 2, 2012, the parties submitted for the Court’s approval the Settlement Stipulation and other papers needed to effect a resolution of this lawsuit. While the Company makes no assurances or guarantees as to the outcome of this proceeding, based upon our current knowledge, the Company believes that the final result of this action will have no material effect on our consolidated financial position, results of operations, or cash flows.

In the normal course of business, the Company faces risk of exposure to warranty and product liability claims. Related to this, the Company (through its subsidiary SANYO Semiconductor) has received a request from one of its customers to pay to the customer an amount currently estimated by the customer to be approximately $20.0 million in respect of costs incurred or to be incurred by the customer and its customers in remedying certain alleged failures of SANYO Semiconductor products sold to the customer prior to the Company’s acquisition of SANYO Semiconductor. The Company is conducting investigations and evaluations of this matter, including fact finding and assessing possible liability, available defenses, mitigating circumstances and possible third party indemnity coverage. It is difficult to predict with certainty the ultimate loss exposure to ON Semiconductor; however, management believes that a number of defenses are available to the Company and it would expect to defend itself vigorously against any formal claim that may be asserted. While the Company makes no assurances or guarantees as to the outcome of this claim, based upon its current knowledge, the Company believes that the final result of this matter will have no material effect on its consolidated financial position, results of operations, or cash flows.

On December 27, 2011, 112 former employees of the Company’s subsidiary SANYO Semiconductor Thailand (“SSTH”), whose manufacturing operations were located in the Rojana Industrial Park in Ayutthaya, Thailand (“Rojana Park”), filed complaints with the Labor Region 1 Court in Lopburi Province in Thailand, seeking damages against SSTH for unfair termination under Thailand’s labor laws. On January 19, 2012, four additional former employees filed similar complaints with the Labor Region 1 Court in Lopburi Province in Thailand against SSTH. On March 19, 2012, 46 additional former employees filed similar complaints with the

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ON SEMICONDUCTOR CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — Continued

Labor Region 1 Court in Lopburi Province in Thailand against SSTH. All the cases are based on the widespread flooding in Thailand that occurred in the fourth quarter of 2011 and affected the Rojana Park. The floods severely damaged SSTH’s buildings, equipment and other property at its Rojana Park location. As a result, the Company decided to cease SSTH’s operations in Thailand and SSTH asked its employees to resign. The lawsuits seek a total of approximately $25.4 million, which includes alleged damages for: (1) wages calculated based on the employee’s last wage rate from the date of termination through the date of retirement; (2) mental anguish; (3) lost bonuses; and/or (4) other damages. The Company is currently evaluating the facts and legal issues and it is difficult at this time to predict with certainty the ultimate loss exposure to ON Semiconductor for this matter. The Company denies the substantive allegations of the lawsuits and expects to vigorously defend against them.

See Part I, Item 1 “Business-Government Regulation” of the 2011 Form 10-K for information on certain environmental matters.

Note 10: Fair Value of Financial Instruments

The following table summarizes the Company’s financial assets and liabilities measured at fair value on a recurring basis as of March 30, 2012 and December 31, 2011 (in millions):

	March 30, 2012		Quoted Prices in Active Markets (Level 1)		Balance as of December 31, 2011		Quoted Prices in Active Markets (Level 1)
Description
Assets:
Cash and cash equivalents:
Demand and time deposits	$	431.0	$	431.0	$	455.3	$	455.3
Treasuries		92.6		92.6		131.1		131.1
Commercial paper		54.2		54.2		50.9		50.9
Corporate bonds		2.3		2.3		15.6		15.1
Other Current Assets
Foreign currency exchange contracts	$	0.4	$	0.4	$	0.7	$	0.7
Liabilities:
Foreign currency exchange contracts	$	0.2	$	0.2	$	0.1	$	0.1

The Company’s financial assets and liabilities are valued using market prices on active markets (Level 1). Level 1 instrument valuations are obtained from real-time quotes for transactions in active exchange markets involving identical assets. Cash and cash equivalents are short-term, highly liquid investments with original or remaining maturities of three months or less when purchased. The Company’s short-term investments balance of $312.2 million is classified as held-to-maturity securities and is carried at amortized cost, which excludes $0.2 million of unrealized losses as of March 30, 2012.

The carrying amounts of other current assets and liabilities, such as accounts receivable and accounts payable, approximate fair value based on the short-term nature of these instruments.

As of March 30, 2012, the Company held no direct investments in auction rate securities, collateralized debt obligations, structured investment vehicles or mortgage-backed securities.

20

ON SEMICONDUCTOR CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — Continued

Long-Term Debt, Including Current Portion

The carrying amounts and fair values of the Company’s long-term borrowings (excluding capital lease obligations, real estate mortgages and equipment financing) at March 30, 2012 and December 31, 2011 are as follows (in millions):

	March 30, 2012				December 31, 2011
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Long-term debt, including current portion
Convertible Notes	$	574.3	$	716.5	$	567.1	$	683.9
Long-term debt	$	483.9	$	453.3	$	496.6	$	462.0

The fair value of the Convertible Notes was estimated based on quoted market prices. The fair value of other long-term debt was estimated based on discounting the remaining principal and interest payments using current market rates for similar debt and consideration of credit and default risk at March 30, 2012 and December 31, 2011.

Note 11: Financial Instruments

Foreign Currencies

As a multinational business, the Company’s transactions are denominated in a variety of currencies. When appropriate, the Company uses forward foreign currency contracts to reduce its overall exposure to the effects of currency fluctuations on its results of operations and cash flows. The Company’s policy prohibits trading in currencies for which there are no underlying exposures, or entering into trades for any currency to intentionally increase the underlying exposure.

The Company primarily hedges existing assets and liabilities and cash flows associated with transactions currently on its balance sheet.

As of March 30, 2012 and December 31, 2011, the Company had net outstanding foreign exchange contracts in a sell position with a net notional amount of $170.2 million and $203.4 million, respectively. Such contracts were obtained through financial institutions and were scheduled to mature within three months. Management believes that these financial instruments should not subject the Company to increased risks from foreign exchange movements because gains and losses on these contracts should offset losses and gains on the assets, liabilities and transactions being hedged. The following schedule shows the Company’s net foreign exchange positions in U.S. dollars as of March 30, 2012 and December 31, 2011 (in millions):

	March 30, 2012					December 31, 2011
	Buy (Sell)			Notional Amount		Buy (Sell)			Notional Amount
Chinese Renminbi	$	(8.4	)	$	8.4	$	(12.8	)	$	12.8
Euro		(38.2	)		38.2		(30.8	)		30.8
Japanese Yen		(68.5	)		68.5		(100.0	)		100.0
Malaysian Ringgit		29.4			29.4		29.4			29.4
Other Currencies		6.9			25.7		7.6			30.4
	$	(78.8	)	$	170.2	$	(106.6	)	$	203.4

The Company is exposed to credit-related losses if counterparties to its foreign exchange contracts fail to perform their obligations. As of March 30, 2012, the counterparty on the Company’s foreign exchange contracts

21

ON SEMICONDUCTOR CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — Continued

is a highly rated financial institution and no credit-related losses are anticipated. Amounts payable or receivable under the contracts are included in other current assets or accrued expenses in the accompanying consolidated balance sheet. For March 30, 2012 and April 1, 2011, realized and unrealized foreign currency transaction gains/losses totaled a gain of $4.7 million and a loss of $2.5 million, respectively.

Cash Flow Hedges

The Company is exposed to global market risks associated with fluctuations in interest rates and foreign currency exchange rates. The Company addresses these risks through controlled management that includes the use of derivative financial instruments to economically hedge or reduce these exposures. The Company does not enter into derivative financial instruments for trading or speculative purposes.

The purpose of the Company’s foreign currency hedging activities is to protect the Company from the risk that the eventual cash flows resulting from transactions in foreign currencies will be adversely affected by changes in exchange rates. The Company enters into forward contracts that are designated as foreign-currency cash flow hedges of selected forecasted payments denominated in currencies other than U.S. dollars. All the contracts mature within 12 months and upon maturity the amount recorded in accumulated other comprehensive income are reclassified into earnings.The Company documents all relationships between designated hedging instruments and hedged items, as well as its risk management objective and strategy for undertaking hedge transactions.

All derivatives are recognized on the balance sheet at their fair value and classified based on the instrument’s maturity date. The total notional amount of outstanding derivatives designated as cash flow hedges as of March 30, 2012, was approximately $46.0 million, which is primarily comprised of cash flow hedges for Malaysian Ringgit/U.S. Dollar, and Philippine Peso/U.S. Dollar currency pairs.

For the quarter ended March 30, 2012, the Company recorded a loss of $0.4 million, recognized in other comprehensive income on derivatives associated with cash flow hedges. As of March 30, 2012 the Company had liability balances for contracts designated as cash flow hedging instruments of $0.2 million, which were classified as other liabilities. For the quarter ended April 1, 2011, there was no cash flow hedging activity.

As of March 30, 2012 and April 1, 2011, the Company had balances for contracts not designated as hedging instruments of $0.4 million and $0.4 million, which was classified as other assets. Additionally, as of April 1, 2011, the Company had liability balances for contracts not designated as hedging instruments of $0.7 million, which were classified as other liabilities.

Note 12: Supplemental Disclosures of Cash Flow Information

The Company’s non-cash financing activities and cash payments for interest and income taxes are as follows (in millions):

	For Quarters Ended
	March 30, 2012			April 1, 2011
Non-cash financing activities:
Capital expenditures in accounts payable	$	105.0		$	55.1
Equipment acquired or refinanced through capital leases	$	—		$	8.3
Cash (received) paid for:
Interest income	$	(0.5	)	$	(0.3	)
Interest expense	$	8.5		$	9.1
Income taxes	$	4.6		$	2.1

22

ON SEMICONDUCTOR CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — Continued

Note 13: Segment Information

The Company is organized into four operating segments, which also represent four reporting segments: computing and consumer products group, automotive, industrial, medical and mil-aero products group, standard products group and SANYO Semiconductor products group. Each of the Company’s major product lines has been examined and each product line has been assigned to a segment, as illustrated in the table below, based on the Company’s operating strategy. Because many products are sold into different end-markets, the total revenue reported for a segment is not indicative of actual sales in the end-market associated with that segment, but rather is the sum of the revenue from the product lines assigned to that segment. These segments represent the Company’s view of the business and as such are used to evaluate progress of major initiatives.

Revenues, gross profit and operating income for the Company’s reportable segments for the quarters ended March 30, 2012 and April 1, 2011, respectively, are as follows (in millions):

	Computing & Consumer Products Group		Automotive, Industrial, Medical and Mil-Aero Products Group		Standard Products Group		SANYO Semiconductor Products Group			Total
For quarter ended March 30, 2012:
Revenues from external customers	$	138.3	$	203.4	$	196.8	$	205.9		$	744.4
Segment gross profit	$	52.5	$	91.3	$	73.5	$	39.9		$	257.2
Segment operating income (loss)	$	20.9	$	19.7	$	46.9	$	(20.4	)	$	67.1
For quarter ended April 1, 2011:
Revenues from external customers	$	155.7	$	208.7	$	228.1	$	278.1		$	870.6
Segment gross profit	$	63.7	$	104.3	$	86.2	$	4.4		$	258.6
Segment operating income (loss)	$	27.4	$	32.5	$	54.6	$	(42.8	)	$	71.7

Depreciation and amortization expense is included in segment operating income. Reconciliations of segment gross profit and segment operating income to the financial statements are as follows (in millions):

	Quarter Ended
	March 30, 2012			April 1, 2011
Gross profit for reportable segments	$	257.2		$	258.6
Unallocated amounts:
Other unallocated manufacturing costs	$	(12.0	)	$	(16.2	)
Gross profit	$	245.2		$	242.4
Operating income for reportable segments	$	67.1		$	71.7
Unallocated amounts:
Restructuring and other charges		(11.5	)		(12.4	)
Other unallocated manufacturing costs		(12.0	)		(16.2	)
Other unallocated operating expenses		—			(10.4	)
Operating income	$	43.6		$	32.7

23

ON SEMICONDUCTOR CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — Continued

Revenues by geographic location including local sales and exports made by operations within each area, based on shipments from the respective country, are summarized as follows (in millions):

	Quarter Ended
	March 30, 2012		April 1, 2011
United States	$	111.3	$	127.2
Other Americas		9.4		6.2
United Kingdom		105.8		109.9
Belgium		0.1		0.9
China		218.3		269.9
Japan		115.2		125.4
Singapore		143.5		170.8
Other Asia/Pacific		40.8		60.3
	$	744.4	$	870.6

Property, plant and equipment, net by geographic location, are summarized as follows (in millions):

	March 30, 2012		December 31, 2011
United States	$	261.0	$	257.5
China		94.5		96.7
Other Europe		129.0		117.9
Malaysia		172.6		164.5
Philippines		209.6		204.0
Other Asia/Pacific		82.4		56.2
Japan		125.3		130.2
Belgium		68.4		70.0
Other Americas		12.7		12.5
	$	1,155.5	$	1,109.5

For the quarters ended March 30, 2012, and April 1, 2011, there was no individual customer which accounted for more than 10.0% of the Company’s total revenues.

24

ON SEMICONDUCTOR CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — Continued

Note 14: Guarantor and Non-Guarantor Statements

ON Semiconductor is the sole issuer of the Convertible Notes. ON Semiconductor’s domestic subsidiaries, except those domestic subsidiaries acquired through the acquisitions of AMIS, Catalyst Semiconductor, Inc., PulseCore Holdings (Cayman) Inc., California Micro Devices, Sound Design Technologies, and SANYO Semiconductor (collectively, the “Guarantor Subsidiaries”), fully and unconditionally guarantee on a joint and several basis ON Semiconductor’s obligations under the Convertible Notes. The Guarantor Subsidiaries include SCI LLC and Semiconductor Components Industries of Rhode Island, Inc., as well as other holding companies whose net assets consist primarily of investments in the joint venture in Leshan, China and equity interests in the Company’s other foreign subsidiaries. ON Semiconductor’s other remaining subsidiaries (collectively, the “Non-Guarantor Subsidiaries”) are not guarantors of the Convertible Notes. The repayment of the unsecured Convertible Notes is subordinated to the senior indebtedness of ON Semiconductor and the Guarantor Subsidiaries on the terms described in the indentures for such Convertible Notes. Condensed consolidated financial information for the issuer of the Convertible Notes, the Guarantor Subsidiaries and the Non-Guarantor Subsidiaries is as follows (in millions):

	Issuer			Guarantor
	ON Semiconductor Corporation (1)			SCI LLC			Other Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Total
As of March 30, 2012
Cash and cash equivalents	$	—		$	232.7		$	(0.9	)	$	348.3		$	—		$	580.1
Short-term investments		—			312.2			—			—			—			312.2
Receivables, net		—			56.9			—			368.4			—			425.3
Inventories		—			35.8			—			605.5			(7.6	)		633.7
Other current assets		—			9.9			—			66.9			—			76.8
Deferred income taxes, net of allowances		—			5.5			—			4.8			—			10.3
Total current assets		—			653.0			(0.9	)		1,393.9			(7.6	)		2,038.4
Property, plant and equipment, net		—			258.3			2.7			897.3			(2.8	)		1,155.5
Deferred income taxes, net of allowances		—			—			—			30.1			—			30.1
Goodwill		—			125.7			37.3			35.7			—			198.7
Intangible assets, net		—			147.8			—			207.1			(29.1	)		325.8
Investments and other assets		2,086.9			1,341.2			61.0			852.9			(4,261.3	)		80.7
Total assets	$	2,086.9		$	2,526.0		$	100.1		$	3,417.0		$	(4,300.8	)	$	3,829.2
Accounts payable	$	—		$	31.3		$	—		$	377.3		$	—		$	408.6
Accrued expenses		—			56.8			0.8			179.2			1.7			238.5
Income taxes payable		—			(8.4	)		—			11.2			—			2.8
Accrued interest		3.8			0.2			—			0.2			—			4.2
Deferred income on sales to distributors		—			39.7			—			113.8			—			153.5
Deferred income taxes, net of allowances		—			—			—			29.6			—			29.6
Current portion of long-term debt		186.0			70.9			—			120.2			—			377.1
Total current liabilities		189.8			190.5			0.8			831.5			1.7			1,214.3
Long-term debt		388.4			375.3			—			48.2			—			811.9
Other long-term liabilities		—			25.8			0.4			221.2			—			247.4
Deferred income taxes, net of allowances		—			5.5			—			15.6			—			21.1
Intercompany		0.3			(303.2	)		(51.5	)		148.9			205.5			—
Total liabilities		578.5			293.9			(50.3	)		1,265.4			207.2			2,294.7
Common stock		5.1			0.3			50.9			147.2			(198.4	)		5.1
Additional paid-in capital		3,125.6			2,716.6			238.4			1,359.5			(4,314.5	)		3,125.6
Accumulated other comprehensive loss		(41.6	)		(41.6	)		—			(34.5	)		76.1			(41.6	)
Accumulated deficit		(1,174.1	)		(443.2	)		(138.9	)		679.4			(97.3	)		(1,174.1	)
Less: treasury stock, at cost		(406.6	)		—			—			—			—			(406.6	)
Total ON Semiconductor Corporation stockholders’ equity (deficit)		1,508.4			2,232.1			150.4			2,151.6			(4,534.1	)		1,508.4
Minority interests in consolidated subsidiaries		—			—			—			—			26.1			26.1
Total equity		1,508.4			2,232.1			150.4			2,151.6			(4,508.0	)		1,534.5
Total liabilities and equity	$	2,086.9		$	2,526.0		$	100.1		$	3,417.0		$	(4,300.8	)	$	3,829.2

25

ON SEMICONDUCTOR CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — Continued

	Issuer			Guarantor
	ON Semiconductor Corporation (1)			SCI LLC			Other Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Total
As of December 31, 2011
Cash and cash equivalents	$	—			304.5			(0.2	)	$	348.6			—		$	652.9
Short-term investments		—			248.6			—			—			—			248.6
Receivables, net		—			64.7			—			392.5			—			457.2
Inventories		—			36.2			—			599.3			1.9			637.4
Other current assets		—			7.5			—			114.1			—			121.6
Deferred income taxes, net of allowances		—			5.5			—			4.5			—			10.0
Total current assets		—			667.0			(0.2	)		1,459.0			1.9			2,127.7
Property, plant and equipment, net		—			255.2			2.3			854.5			(2.5	)		1,109.5
Deferred income taxes, net of allowances		—			—			—			34.2			—			34.2
Goodwill		—			125.7			37.3			35.7			—			198.7
Intangible assets, net		—			152.3						215.0			(30.1	)		337.2
Investments and other assets		2,036.2			1,303.5			59.1			846.9			(4,169.5	)		76.2
Total assets	$	2,036.2		$	2,503.7		$	98.5		$	3,445.3		$	(4,200.2	)	$	3,883.5
Accounts payable	$	—		$	32.8			0.1			418.9			—		$	451.8
Accrued expenses		—			61.0			0.8			176.3			1.7			239.8
Income taxes payable		—			(0.1	)		—			7.6			—			7.5
Accrued interest		0.6			—			—			0.1			—			0.7
Deferred income on sales to distributors		—			43.7			—			128.3			—			172.0
Deferred income taxes, net of allowances		—			—			—			33.6			—			33.6
Current portion of long-term debt		182.6			74.1			—			113.4			—			370.1
Total current liabilities		183.2			211.5			0.9			878.2			1.7			1,275.5
Long-term debt		384.5			393.8			—			58.6			—			836.9
Other long-term liabilities		—			26.6			0.4			233.1			—			260.1
Deferred income tax, net of allowances		—			5.5			—			12.0			—			17.5
Intercompany		0.3			(318.2	)		(54.5	)		166.9			205.5			—
Total liabilities		568.0			319.2			(53.2	)		1,348.8			207.2			2,390.0
Common stock		5.0			0.3			50.9			146.9			(198.1	)		5.0
Additional paid-in capital		3,113.5			2,711.2			238.4			1,359.2			(4,308.8	)		3,113.5
Accumulated other comprehensive loss		(46.7	)		(46.7	)		—			(39.2	)		85.9			(46.7	)
Accumulated deficit		(1,202.3	)		(480.3	)		(137.6	)		629.6			(11.7	)		(1,202.3	)
Less: treasury stock, at cost		(401.3	)		—			—			—			—			(401.3	)
Total ON Semiconductor Corporation stockholders’ equity (deficit)		1,468.2			2,184.5			151.7			2,096.5			(4,432.7	)		1,468.2
Minority interests in consolidated subsidiaries		—			—			—			—			25.3			25.3
Total equity		1,468.2			2,184.5			151.7			2,096.5			(4,407.4	)		1,493.5
Total liabilities and equity	$	2,036.2		$	2,503.7		$	98.5		$	3,445.3		$	(4,200.2	)	$	3,883.5

26

ON SEMICONDUCTOR CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — Continued

	Issuer			Guarantor Subsidiaries
	ON Semiconductor Corporation (1)			SCI LLC			Other Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Total
For the quarter ended March 30, 2012
Revenues	$	—		$	185.6		$	—		$	893.5		$	(334.7	)	$	744.4
Cost of product revenues		—			116.1			0.2			708.1			(325.2	)		499.2
Gross profit		—			69.5			(0.2	)		185.4			(9.5	)		245.2
Research and development		—			43.2			2.6			45.6			—			91.4
Selling and marketing		—			17.1			0.2			28.3			—			45.6
General and administrative		—			15.2			0.2			26.6			—			42.0
Amortization of acquisition related intangible assets		—			4.5			—			7.6			(1.0	)		11.1
Restructuring, asset impairments and other, net		—			—			—			11.5			—			11.5
Total operating expenses		—			80.0			3.0			119.6			(1.0	)		201.6
Operating income (loss)		—			(10.5	)		(3.2	)		65.8			(8.5	)		43.6
Interest expense		(10.9	)		(2.3	)		—			(2.5	)		—			(15.7	)
Interest income		—			0.3			—			0.2			—			0.5
Other		—			6.2			—			(1.5	)		—			4.7
Equity in earnings		39.1			34.9			1.9			—			(75.9	)		—
Income (loss) before income taxes		28.2			28.6			(1.3	)		62.0			(84.4	)		33.1
Income tax provision		—			8.5			—			(12.6	)		—			(4.1	)
Net income (loss)		28.2			37.1			(1.3	)		49.4			(84.4	)		29.0
Net income attributable to minority interest		—			—			—			—			(0.8	)		(0.8	)
Net income (loss) attributable to ON Semiconductor Corporation	$	28.2		$	37.1		$	(1.3	)	$	49.4		$	(85.2	)	$	28.2
Comprehensive income:
Net income	$	28.2		$	37.1		$	(1.3	)	$	49.4		$	(84.4	)	$	29.0
Foreign currency translation adjustments		4.9			0.8			—			4.1			(4.9	)		4.9
Effects of cash flow hedges		(0.4	)		(0.4	)		—			—			0.4			(0.4	)
Unrealized gain on available-for-sale securities		0.5			—			—			0.5			(0.5	)		0.5
Amortization of prior service costs of defined benefit plan		0.1			—			—			0.1			(0.1	)		0.1
Comprehensive income		33.3			37.5			(1.3	)		54.1			(89.5	)		34.1
Comprehensive income attributable to minority interest		—			—			—			—			(0.8	)	$	(0.8	)
Comprehensive income attributable to ON Semiconductor Corporation:	$	33.3		$	37.5		$	(1.3	)	$	54.1		$	(90.3	)	$	33.3
Net cash (used in) provided by operating activities	$	—		$	(31.3	)	$	(0.2	)	$	99.9		$	—		$	68.4
Cash flows from investing activities:
Purchases of property, plant and equipment		—			(11.2	)		(0.5	)		(38.7	)		—			(50.4	)
Proceeds from sales of property, plant and equipment		—			—			—			1.9			—			1.9
Deposits utilized for purchases of property, plant and equipment		—			—			—			(9.6	)		—			(9.6	)
Recovery from insurance on property, plant and equipment		—			—			—			11.5			—			11.5
Proceeds from held-to-maturity securities		—			99.7			—			—			—			99.7
Purchase of held-to-maturity securities		—			(163.3	)		—			—			—			(163.3	)
Net cash used in investing activities		—			(74.8	)		(0.5	)		(34.9	)		—			(110.2	)

27

ON SEMICONDUCTOR CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — Continued

	Issuer		Guarantor Subsidiaries
	ON Semiconductor Corporation (1)		SCI LLC			Other Subsidiaries			Non-Guarantor Subsidiaries			Eliminations		Total
Cash flows from financing activities:
Intercompany loans		—		(23.3	)		—			23.3			—		—
Intercompany loan repayments		—		70.2			—			(70.2	)		—		—
Proceeds from debt issuance		—		—			—			2.0			—		2.0
Proceeds from exercise of stock options		—		4.8			—			—					4.8
Payment of capital lease obligation		—		(11.0	)		—			(0.4	)				(11.4	)
Purchase of treasury stock		—		(5.3	)		—			—			—		(5.3	)
Repayment of long term debt		—		(1.1	)		—			(14.5	)		—		(15.6	)
Net cash provided by (used in) financing activities		—		34.3			—			(59.8	)		—		(25.5	)
Effect of exchange rate changes on cash and cash equivalents										(5.5	)				(5.5	)
Net increase (decrease) in cash and cash equivalents		—		(71.8	)		(0.7	)		(0.3	)		—		(72.8	)
Cash and cash equivalents, beginning of period		—		304.5			(0.2	)		348.6					652.9
Cash and cash equivalents, end of period	$	—	$	232.7		$	(0.9	)	$	348.3		$	—	$	580.1

	Issuers			Guarantor Subsidiaries
	ON Semiconductor Corporation (1)			SCI LLC			Other Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Total
For the quarter ended April 1, 2011
Revenues	$	—		$	208.6		$	—		$	1,003.1		$	(341.1	)	$	870.6
Cost of product revenues		—			154.9			0.3			805.9			(332.9	)		628.2
Gross profit		—			53.7			(0.3	)		197.2			(8.2	)		242.4
Research and development		—			59.3			3.0			28.8			—			91.1
Selling and marketing		—			21.4			0.3			27.7			—			49.4
General and administrative		—			27.4			0.2			19.5			—			47.1
Amortization of acquisition related intangible assets		—			4.4			—			6.3			(1.0	)		9.7
Restructuring, asset impairments and other, net		—			—			—			12.4			—			12.4
Total operating expenses		—			112.5			3.5			94.7			(1.0	)		209.7
Operating income (loss)		—			(58.8	)		(3.8	)		102.5			(7.2	)		32.7
Interest expense		(12.9	)		(2.2	)		—			(2.7	)		—			(17.8	)
Interest income		—			0.1			—			0.2			—			0.3
Other		—			4.1			—			(6.6	)		—			(2.5	)
Gain (loss) on SANYO Semiconductor acquisition		—			24.3			—			—			—			24.3
Loss on debt repurchase		—			—			—			—			—			—
Equity in earnings		48.4			42.6			1.7			—			(92.7	)		—
Income (loss) before income taxes		35.5			10.1			(2.1	)		93.4			(99.9	)		37.0
Income tax provision		—			12.2			—			(13.0	)		—			(0.8	)
Net income (loss)		35.5			22.3			(2.1	)		80.4			(99.9	)		36.2
Net income (loss) attributable to minority interest		—			—			—			—			(0.7	)		(0.7	)
Net income (loss) attributable to ON Semiconductor Corporation	$	35.5		$	22.3		$	(2.1	)	$	80.4		$	(100.6	)	$	35.5

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ON SEMICONDUCTOR CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — Continued

	Issuers		Guarantor Subsidiaries
	ON Semiconductor Corporation (1)		SCI LLC			Other Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Total
Comprehensive income (loss):
Net income (loss)	$	35.5	$	22.3		$	(2.1	)	$	80.4		$	(99.9	)	$	36.2
Foreign currency translation adjustments		0.4		0.4			—			—			(0.4	)		0.4
Comprehensive income		35.9		22.7			(2.1	)		80.4			(100.3	)		36.6
Comprehensive income attributable to minority interests		—		—			—			—			(0.7	)		(0.7	)
Comprehensive income (loss) attributable to ON Semiconductor Corporation	$	35.9	$	22.7		$	(2.1	)	$	80.4		$	(101.0	)	$	35.9
Net cash provided by operating activities	$	—	$	69.3		$	(0.1	)	$	56.4		$	—		$	125.6
Cash flows from investing activities:
Purchases of property, plant and equipment		—		(20.9	)		(0.1	)		(67.7	)		—			(88.7	)
Purchase of a business, net of cash acquired		—		53.0			—			(110.6	)		—			(57.6	)
Purchase of restricted cash		—		142.1			—			—			—			142.1
Net cash used in investing activities		—		174.2			(0.1	)		(178.3	)		—			(4.2	)
Cash flows from financing activities:
Intercompany loans		—		(375.1	)		—			375.1			—			—
Intercompany loan repayments		—		144.8			—			(144.8	)		—			—
Proceeds from issuance of common stock under the employee stock purchase plan		—		1.9			—			—			—			1.9
Proceeds from debt issuance		—		—			—			15.2			—			15.2
Proceeds from exercise of stock options		—		41.1			—			—			—			41.1
Payment of capital lease obligation		—		(10.0	)		—			0.1			—			(9.9	)
Purchase of treasury stock		—		(7.6	)		—			—			—			(7.6	)
Repayment of long term debt		—		(0.3	)					(19.3	)		—			(19.6	)
Net cash used in financing activities		—		(205.2	)		—			226.3			—			21.1
Effect of exchange rate changes on cash and cash equivalents		—		—			—			0.2			—			0.2
Net increase (decrease) in cash and cash equivalents		—		38.3			(0.2	)		104.6			—			142.7
Cash and cash equivalents, beginning of period		—		392.3			—			231.0			—			623.3
Cash and cash equivalents, end of period	$	—	$	430.6		$	(0.2	)	$	335.6		$	—			766.0

(1) ON Semiconductor is a holding company and has no operations apart from those of its operating subsidiaries. Additionally, ON Semiconductor does not maintain a bank account; rather SCI LLC, its primary domestic operating subsidiary, processes all of its cash receipts and disbursements on its behalf.

See also Note 9: “Commitments and Contingencies—Other Contingencies” for further discussion of the Company’s guarantees.

Note 15: Subsequent Events

Retirement of the Zero Coupon Convertible Senior Subordinated Notes due 2024

On April 16, 2012, the Company exercised its call option relating to its Zero Coupon Convertible Senior Subordinated Notes due 2024. As a result, the Company paid the gross principal amount of approximately $96.2 million to the holders of the notes and retired the outstanding obligation.

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ON SEMICONDUCTOR CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — Continued

Voluntary Retirement Program at SANYO Semiconductor Subsidiaries

On April 13, 2012 the Company initiated a voluntary retirement program for employees of certain of its SANYO Semiconductor subsidiaries. Under the program, the Company intends to reduce the employment levels at these subsidiaries by up to approximately 500 employees. The ultimate cost of the program will depend on several factors, including the years of service and salary levels of employees that apply for early retirement under the program. Given the voluntary nature of the program, the costs associated with the program will be recorded when the retirement offer is accepted by the impacted employees. The Company estimates recording a charge ranging from $40.0 million to $50.0 million related to this program during the second quarter of 2012. This estimated charge excludes amounts related to the pension benefit impact that may be recognized subsequent to the employees’ retirement. The Company’s pension and related benefit plans allow for benefit payment elections by the employee and the Company’s pension liability balances reflect actuarial assumptions related to these elections. As these employees make their actual elections at retirement, the pension obligation will be determined and as a result the Company will record an adjustment to the pension liability to reflect the impact of employee elections as compared to the actuarial assumptions. Accordingly, the Company cannot reasonably estimate the related impact until the employee elections are known.

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

You should read the following discussion in conjunction with our audited historical consolidated financial statements, which are included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2011 (“2011 Form 10-K”), filed with the Securities and Exchange Commission (the “Commission”) on February 22, 2012, and our unaudited consolidated financial statements for the fiscal quarter ended March 30, 2012, included elsewhere in this Form 10-Q. Management’s Discussion and Analysis of Financial Condition and Results of Operations contains statements that are forward-looking. These statements are based on current expectations and assumptions that are subject to risk, uncertainties, and other factors. Actual results could differ materially because of the factors discussed below or elsewhere in this Form 10-Q. See Part II, Item 1A. “Risk Factors” of this Form 10-Q and Part I, Item 1A. “Risk Factors” of our 2011 Form 10-K.

Company Highlights for the Quarter Ended March 30, 2012

• Total revenues of $744.4 million

• Gross margin of 32.9 percent

• Net income per fully diluted share of $0.06

Executive Overview

This Executive Overview presents summary information regarding our industry, markets, business and operating trends only. For further information regarding the events summarized herein, you should read “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in its entirety.

Industry Overview

We participate in unit and revenue surveys and use data summarized by the World Semiconductor Trade Statistics (“WSTS”) group to evaluate overall semiconductor market trends and also to track our progress against the total market in the areas we provide semiconductor components. The most recently published estimates of WSTS project a compound annual growth rate in our total addressable market of approximately 4.9% during 2012 through 2014. These are not our projections and may not be indicative of actual results, but we, like many of our competitors, use this information as helpful, third party projections and estimates.

Business Overview

We are a supplier of high performance silicon solutions for energy efficient electronics. Our broad portfolio of power and signal management, logic, discrete and custom devices helps customers efficiently solve their design challenges in automotive, communications, computing, consumer, industrial, LED lighting, medical, military/aerospace, smart grid and power applications. We design, manufacture and market an extensive portfolio of semiconductor components that address the design needs of sophisticated electronic systems and products. Our power management semiconductor components control, convert, protect and monitor the supply of power to the different elements within a wide variety of electronic devices. Our custom application specific integrated circuits (“ASICs”) use analog, digital signal processing, mixed-signal and advanced logic capabilities to act as the brain behind many of our automotive, medical, military, aerospace, consumer and industrial customers’ unique products. Our data management semiconductor components provide high-performance clock management and data flow management for precision computing and communications systems. Our standard semiconductor components serve as “building block” components within virtually all types of electronic devices. These various products fall into the logic, analog, discrete, image sensors and memory categories used by the WSTS group.

We serve a broad base of end-user markets, including automotive, communications, computing, consumer, medical, industrial, smart grid and military/aerospace. Applications for our products in these markets include portable electronics, computers, game consoles, servers, automotive and industrial control systems, LED lighting, power supplies, networking and telecommunications gear and automated test equipment.

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Our extensive portfolio of devices enables us to offer advanced integrated circuits and the “building block” components that deliver system level functionality and design solutions. Our product portfolio comprises approximately 40,500 products and we shipped approximately 8.9 billion units in the first three months of 2012 as compared to 10.6 billion units in the first three months of 2011. We specialize in micro packages, which offer increased performance characteristics while reducing the critical board space inside today’s ever shrinking electronic devices. We believe that our ability to offer a broad range of products, global manufacturing network and logistics provides our customers with single source purchasing on a cost-effective and timely basis.

Segments

We are organized into four operating segments, which also represent four reporting segments: computing and consumer products group; automotive, industrial, medical and mil-aero products group; standard products group; and SANYO Semiconductor products group. Each of our major product lines has been assigned to a segment, as illustrated in the table below, based on our operating strategy. Because many products are sold into different end markets, the total revenue reported for a segment is not indicative of actual sales in the end-market associated with that segment, but rather is the sum of the revenues from the product lines assigned to that segment. From time to time we reassess the alignment of our product families and devices to our operating segments and may move product families or individual devices from one operating segment to another.

Customers

We have approximately 417 direct customers worldwide, and we also service approximately 275 significant original equipment manufacturers (“OEMs”) indirectly through our distributor and electronic manufacturing service provider customers. Our direct and indirect customers include: (1) leading OEMs in a broad variety of industries, such as Continental Automotive Systems, Delta, Samsung, Hella, Delphi, LG Electronics, Motorola Mobility, Motorola Solutions, Panasonic, Schneider, GE, Honeywell, Broadcom, Siemens, Nokia, Cisco Systems, and Sony Ericsson; (2) electronic manufacturing service providers, such as Flextronics, Celestica, Benchmark Electronic, and Jabil; and (3) global distributors, such as Arrow, Avnet, EBV Elektronik, Future, World Peace and Yosun.

Operating Facilities

Our primary domestic design operations are located in Arizona, California, Idaho, Oregon, Rhode Island and Texas, as well as foreign design operations in Belgium, Canada, China, the Czech Republic, France, Germany, India, Ireland, Korea, Romania and Switzerland. Additionally, we currently operate domestic manufacturing facilities in Idaho and Oregon and have foreign manufacturing facilities in Belgium, Canada, China, the Czech Republic, Japan, Malaysia, the Philippines and Vietnam.

New Product Innovation

As a result of our research and development initiatives, we introduced 285 new product families in 2011. During the first three months of 2012, we introduced an additional 68 new product families. Our new product development efforts continue to be focused on building solutions in power management that appeal to customers in focused market segments and across multiple high growth applications. As always, it is our practice to regularly re-evaluate our research and development spending, to assess the deployment of resources and to review the funding of high growth technologies. We deploy people and capital with the goal of maximizing our investment in research and development in order to position ourselves for continued growth. As a result, we often invest opportunistically to refresh existing products in our commodity logic, analog, memory and discrete products. We invest in these initiatives when we believe there is a strong customer demand or opportunities to innovate our current portfolio in high growth markets and applications.

Business and Macroeconomic Environment

We have recognized efficiencies from implemented restructuring activities and programs and continue to implement profitability enhancement programs to improve our cost structure; however, the semiconductor

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industry has traditionally been highly cyclical and has often experienced significant downturns in connection with, or in anticipation of, declines in general economic conditions. Over the past year, we believe the business environment has experienced significant uncertainty and volatility in the United States and Europe along with softening demand. These factors combined with the on-going impact of the flooding in Thailand, have either impacted us directly or have affected our customers and suppliers, which in turn has affected our business, including sales, our production capacity, and results of operations.

Outlook

ON Semiconductor Q2 2012 Outlook

Based upon product booking trends, backlog levels, and estimated turns levels, we estimate that our revenues will be approximately $745.0 million to $785.0 million in the second quarter of 2012. Backlog levels for the second quarter of 2012 represent approximately 80% to 85% of our anticipated second quarter 2012 revenues. We estimate average selling prices for the second quarter of 2012 will be down approximately 1% to 2% compared to the first quarter of 2012. For the second quarter of 2012, we estimate that gross margin as a percentage of revenues will be approximately 34% to 35%. See also Note 15: “Subsequent Events” of the notes to our unaudited consolidated financial statements found elsewhere in this Form 10-Q for information on the voluntary retirement program at certain SANYO Semiconductor subsidiaries that was initiated on April 30, 2012 and is expected to result in a charge ranging from $40.0 million to $50.0 million during the second quarter of 2012.

Results of Operations

Quarter Ended March 30, 2012 Compared to Quarter ended April 1, 2011

The following table summarizes certain information relating to our operating results that has been derived from our unaudited consolidated financial statements for the quarters ended March 30, 2012 and April 1, 2011. The amounts in the following table are in millions:

	Quarter Ended
	March 30, 2012			April 1, 2011			Dollar Change
Revenues	$	744.4		$	870.6		$	(126.2	)
Cost of revenues		499.2			628.2			(129.0	)
Gross profit		245.2			242.4			2.8
Operating expenses:
Research and development		91.4			91.1			0.3
Selling and marketing		45.6			49.4			(3.8	)
General and administrative		42.0			47.1			(5.1	)
Amortization of acquisition-related intangible assets		11.1			9.7			1.4
Restructuring, asset impairments and other, net		11.5			12.4			(0.9	)
Total operating expenses		201.6			209.7			(8.1	)
Operating income		43.6			32.7			10.9
Other income (expenses), net:
Interest expense		(15.7	)		(17.8	)		2.1
Interest income		0.5			0.3			0.2
Other		4.7			(2.5	)		7.2
Gain on SANYO Semiconductor acquisition		—			24.3			(24.3	)
Other income (expenses), net		(10.5	)		4.3			(14.8	)
Income before income taxes and minority interests		33.1			37.0			(3.9	)
Income tax provision		(4.1	)		(0.8	)		(3.3	)
Net income		29.0			36.2			(7.2	)
Net income attributable to minority interests		(0.8	)		(0.7	)		(0.1	)
Net income attributable to ON Semiconductor Corporation	$	28.2		$	35.5		$	(7.3	)

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Revenues

Revenues were $744.4 million and $870.6 million for the quarters ended March 30, 2012 and April 1, 2011, respectively. The decrease in the first quarter of 2012 as compared to the first quarter of 2011 was primarily due to a reduction in revenues related to our SANYO Semiconductor products group of $72.2 million. Additionally, volume and mix declined approximately 12% combined with a reduction in average selling prices of 3%. The revenues by reportable segment were as follows (dollars in millions):

	Quarter Ended March 30, 2012		As a % of Revenue			Quarter Ended April 1, 2011		As a %  of Revenue
Computing & Consumer Products Group	$	138.3		19	%	$	155.7		18	%
Automotive, Industrial, Medical and Mil-Aero Products Group		203.4		27	%		208.7		24	%
Standard Products Group		196.8		26	%		228.1		26	%
SANYO Semiconductor Products Group		205.9		28	%		278.1		32	%
Total revenues	$	744.4				$	870.6

Revenues from the computing and consumer products group decreased $17.4 million or 11% from the first quarter of 2011 to the first quarter of 2012. The decrease can be attributed to a $15.5 million or 12% decrease in revenues from analog products combined with a $1.9 million or 8% decrease in revenues from standard logic products.

Revenues from the automotive, industrial, medical and mil-aero products group decreased $5.3 million or 3% from the first quarter of 2011 to the first quarter of 2012. The decrease is primarily attributed to revenue decreases from memory products of $4.3 million or 22% and analog products of $1.2 million or 6%, partially offset by revenue increases attributed to TMOS products of 35%, foundry products of 23% and ASIC products of 1%.

Revenues from the standard products group decreased $31.3 million or 14% from the first quarter of 2011 to the first quarter of 2012. The revenue decrease is primarily attributed to decreases from discrete standard products of $20.4 million or 16% and TMOS standard products of $11.6 million or 16%.

Revenues from the SANYO Semiconductor products group decreased $72.2 million or 26% from the first quarter of 2011 to the first quarter of 2012 mainly due to a reduction in demand partially attributed to the continued effects from the Thailand flooding, combined with ongoing strengthening of the Japanese yen which reduced our reported revenue for yen based sales.

Revenues by geographic area as a percentage of total revenues were as follows (dollars in millions):

	Quarter Ended March 30, 2012		As a % of Revenue			Quarter Ended April 1, 2011		As a % of Revenue
Americas	$	120.7		16	%	$	133.4		15	%
Asia/Pacific		517.8		70	%		626.3		72	%
Europe		105.9		14	%		110.9		13	%
Total	$	744.4		100	%	$	870.6		100	%

A majority of our end customers, served directly or through distribution channels, are manufacturers of electronic devices. For the quarters ended March 30, 2012 and April 1, 2011, we had no single customer that accounted for 10% of our total revenues.

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Gross Profit

The gross profit by reportable segment for the quarters March 30, 2012 and April 1, 2011 was as follows (in millions):

	Quarter Ended March 30, 2012			As a % of Segment  Revenue			Quarter Ended April 1, 2011			As a % of Segment Revenue
Computing & Consumer Products Group	$	52.5			38.0	%	$	63.7			40.9	%
Automotive, Industrial, Medical and Mil-Aero		91.3			44.9	%		104.3			50.0	%
Standard Products Group		73.5			37.3	%		86.2			37.8	%
SANYO Semiconductor Products Group		39.9			19.4	%		4.4			1.6	%
Gross profit by segment	$	257.2					$	258.6
Unallocated Manufacturing (1)		(12.0	)		(1.6	)%		(16.2	)		(1.9	)%
Total gross profit	$	245.2			32.9	%	$	242.4			27.8	%

(1) Unallocated manufacturing costs are being shown as a percentage of total revenue.

Our gross profit was $245.2 million in the first quarter of 2012 compared to $242.4 million in the first quarter of 2011. The gross profit increase of $2.8 million in the first quarter of 2012 is primarily attributable to the SANYO Semiconductor products group, partially offset by a decline in computing and consumer products, automotive, industrial, medical and mil-aero products group and standard products group. The $35.5 million increase in gross profit for the SANYO Semiconductor products group was driven by the impact of not having the expensing of fair market value of inventory and non-cash manufacturing expenses in the first quarter of 2012, partially offset by increased inventory reserves of $10.5 million. The reduction in gross profit from computing and consumer products, automotive, industrial, medical and mil-aero products and standard products was mainly driven by reductions in average selling prices and an unfavorable change in volume and mix in these segments.

Gross profit as a percentage of revenues increased from 27.8% in the first quarter of 2011 to 32.9% in the first quarter of 2012, primarily due to increased gross margin of our SANYO Semiconductor segment, which included the impact of the expensing of the step-up in fair market value of inventory of $20.3 million and $50.0 million of expensing of non-cash manufacturing expenses in the first quarter of 2011. For the remaining segments, the gross margin decreased due to lower average selling prices during the first quarter of 2012.

Operating Expenses

Research and development expenses were $91.4 million in the first quarter of 2012 compared to $91.1 million in the first quarter of 2011, representing an increase of $0.3 million or 0.3%. Research and development expenses represented 12.3% and 10.5% of revenues for the first quarter of 2012 and the first quarter of 2011, respectively. Research and development expense remained flat primarily due to increased research and development expense associated with our acquisitions, offset by decreased in performance bonus as a result of our lack of achievement of certain financial goals and a decrease in share based compensation.

Selling and marketing expenses were $45.6 million in the first quarter of 2012 compared to $49.4 million in the first quarter of 2011, representing a decrease of $3.8 million or 7.7%. Selling and marketing expenses represented 6.1% and 5.7% of revenues for the first quarter of 2012 and the first quarter of 2011, respectively. The decrease in selling and marketing expenses was primarily due to decreased salaries and wages due to mandatory vacation, decrease in performance bonus as a result of our lack of achievement of certain financial goals, decrease in share based compensation and decreases in travel associated with acquisition related travel.

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General and administrative expenses were $42.0 million in the first quarter of 2012 compared to $47.1 million in the first quarter of 2011, representing a decrease of $5.1 million or 10.8%. General and administrative expenses represented 5.6% and 5.4% of revenues for first quarter of 2012 and the first quarter of 2011, respectively. The decrease in general and administrative expenses was primarily due to consultants associated with acquisition related activities, decrease in performance bonus as a result of our lack of achievement of certain financial goals and decreases in share based compensation expense, partially offset by increases in other miscellaneous expenses.

Other Operating Expenses

The following table shows the amounts of other operating expenses for the quarter ended March 30, 2012 and April 1, 2012 (in millions):

	Quarter Ended March 30, 2012		Quarter Ended April 1, 2011
Amortization of acquisition-related intangible assets	$	11.1	$	9.7
Restructuring, asset impairments and other, net	$	11.5	$	12.4

Other Operating Expenses—Amortization of Acquisition—Related Intangible Assets

Amortization of acquisition-related intangible assets was $11.1 million and $9.7 million for the quarters ended March 30, 2012 and April 1, 2012, respectively. The increase of $1.4 million was primarily attributed to increased amortization of in-process research and development projects associated with our acquisition of the CMOS Image Sensor Business Unit that were completed during fiscal 2011 and for which amortization did not begin until after the projects were completed.

Other Operating Expenses—Restructuring, Asset Impairments and Other, Net

Restructuring, asset impairments and other, net was $11.5 million in the first quarter of 2012 compared to $12.4 million in the first quarter of 2011. The information below summarizes the major activities for the quarter ended March 30, 2012. For detailed information see Note 4: “Restructuring, Asset Impairments and Other, Net” of the notes to our unaudited consolidated financial statements included elsewhere in this report.

In the fourth quarter of 2011, we announced plans to close our probe, assembly and test operations in Ayutthaya, Thailand and to partially close our Bang Pa In, Thailand facility as a result of the flooding in these regions. During the quarter ended March 30, 2012, we recorded $1.5 million of employee separation charges and other charges of $1.8 million for costs incurred since the announced closures.

During the quarter ended March 30, 2012, we recorded $5.8 million of employee separation charges associated with the October 2011 announced shutdown of our Aizu, Japan wafer manufacturing facility, which is expected to be completed by June 2012.

In January 2011, we acquired SANYO Semiconductor and announced plans to integrate certain operations of SANYO Semiconductor into our existing operations, primarily for cost savings purposes. During the quarter ended March 30, 2012, we recorded $2.3 million in exit costs associated with this program.

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Operating Income

Information about operating income (loss) from our reportable segments for the quarters ended March 30, 2012 and April 1, 2011 is as follows, in millions:

	Computing & Consumer Group		Automotive, Industrial, Medical and Mil-Aero Products Group		Standard Products Group		SANYO Semiconductor Products Group			Total
For quarter ended March 30, 2012:
Segment operating income (loss)	$	20.9	$	19.7	$	46.9	$	(20.4	)	$	67.1
For quarter ended April 1, 2011:
Segment operating income (loss)	$	27.4	$	32.5	$	54.6	$	(42.8	)	$	71.7

Depreciation and amortization expense is included in segment operating income. Reconciliations of segment information to financial statements is as follows, in millions:

	Quarter Ended
	March 30, 2012			April 1, 2011
Operating income for reportable segments	$	67.1		$	71.7
Unallocated amounts:
Restructuring, asset impairments and other charges, net		(11.5	)		(12.4	)
Other unallocated manufacturing costs		(12.0	)		(16.2	)
Other unallocated operating expenses		—			(10.4	)
Operating income	$	43.6		$	32.7

Interest Expense

Interest expense decreased by $2.1 million to $15.7 million in the first quarter of 2012 compared to $17.8 million in the first quarter of 2011. We recorded amortization of debt discount to interest expense of $7.2 million and $8.7 million for the quarters ended March 30, 2012 and April 1, 2011, respectively. Our average long-term debt balance (including current maturities and net of debt discount) in the first quarter of 2012 was $1,198.0 million with a weighted average interest rate of 5.3%, compared to $1,080.5 million and a weighted average interest rate of 6.6% in the first quarter of 2011.

Other

Other expense, which is comprised of foreign currency translation gain or loss, increased $7.2 million from a loss of $2.5 million at April 1, 2011 to a gain of $4.7 million at March 30, 2012. The increase is attributable to the foreign exchange movements on the net underlying exposures that have no offsetting hedge positions.

Gain on SANYO Semiconductor Acquisition

The purchase price of SANYO Semiconductor was less than the fair value of its net assets, resulting in a gain on acquisition of $24.3 million. We believe the gain recognized upon acquisition was the result of a number of factors, including the following: SANYO Electric wanting to discontinue semiconductor operations, significant losses recognized by SANYO Electric, SANYO Electric viewing this as the best outcome for SANYO Semiconductor and the fact that we expect to incur future expenses associated with the transfer and consolidation of certain operations.

Provision for Income Taxes

The provision for the first quarter 2012 of $4.1 million included $4.4 million for income and withholding taxes of certain of our foreign operations and $0.2 million of interest on existing reserves for potential liabilities

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in foreign taxing jurisdictions, partially offset by the reversal of $0.5 million for reserves and interest for potential liabilities in foreign taxing jurisdictions which were effectively settled or for which the statute lapsed during first quarter of 2012.

The provision for the first quarter of 2011 of $0.8 million included $1.2 million for income and withholding taxes of certain of our foreign operations and $0.4 million of interest on existing reserves for potential liabilities in foreign taxing jurisdictions, partially offset by the reversal of $0.8 million for reserves and interest for potential liabilities in foreign taxing jurisdictions which were effectively settled or for which the statute lapsed during first quarter of 2011.

Our provision for income taxes is subject to volatility and could be adversely impacted by earnings being lower than anticipated in countries that have lower tax rates and higher than anticipated in countries that have higher tax rates. Our effective tax rate was 12.4% for the quarter ended March 30, 2012, which is below the U.S. statutory federal income tax rate of 35%, due to our domestic and foreign tax losses and tax rate differentials in our foreign subsidiaries. We continue to maintain a full valuation allowance on all of our domestic deferred tax assets.

Our provision for income taxes does not include provisions for U.S. income taxes and foreign withholding taxes associated with the repatriation of undistributed earnings of certain foreign subsidiaries that have not been previously taxed in the United States, which we intend to reinvest in our foreign subsidiaries. If these earnings were distributed to the United States in the form of dividends or otherwise, or if the shares of the relevant foreign subsidiaries were sold or otherwise transferred, we would be subject to additional U.S. income taxes (subject to an adjustment for foreign tax credits) and foreign withholding taxes.

Liquidity and Capital Resources

This section includes a discussion and analysis of our cash requirements, off-balance sheet arrangements, contingencies, sources and uses of cash, operations, working capital, and long-term assets and liabilities.

Cash Requirements

Contractual Obligations

During the first quarter of 2012, there have not been any material changes outside of the ordinary course of business to the contractual obligations table contained in our 2011 Form 10-K for the fiscal year ended December 31, 2011. For information on long-term debt see Note 6: “Long-Term Debt”, operating leases see Note 9: “Commitments and Contingencies” and pension plans see Note 5: “Balance Sheet Information” located elsewhere in this Form 10-Q.

Our balance of cash and cash equivalents was $580.1 million at March 30, 2012. Additionally, our balance of short-term investments was $312.2 million at March 30, 2012. We believe that our cash flows from operations, coupled with our existing cash and cash equivalents and short-term investments will be adequate to fund our operating and capital needs for at least the next 12 months. Total cash and cash equivalents and short-term investments at March 30, 2012 include approximately $547.1 million available in the United States. In addition to cash and cash equivalents and short-term investments already on hand in the United States, we have the ability to raise cash through existing credit facilities, new bank loans, debt obligations or by settling loans with our foreign subsidiaries in order to cover our domestic needs.

Off-Balance Sheet Arrangements

In the normal course of business, we enter into various operating leases for buildings and equipment including our mainframe computer system, desktop computers, communications, foundry equipment and service agreements relating to this equipment.

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In the normal course of business, we provide standby letters of credit or other guarantee instruments to certain parties initiated by either our subsidiaries or us, as required for transactions such as material purchase commitments, agreements to mitigate collection risk, leases or customs guarantees. Our senior revolving credit facility includes a $40.0 million availability for the issuance of letters of credit. A $0.2 million letter of credit was outstanding under our senior revolving credit facility as of March 30, 2012. A bank guarantee issued on our behalf under a non-reusable commitment credit with the bank had an outstanding amount of $3.6 million as of March 30, 2012. The Belgian bank that issued the guarantee has the right to create a mortgage on the real property of one of our European subsidiaries in the amount of $3.0 million, but had not done so as of March 30, 2012. We also had outstanding guarantees and letters of credit outside of our senior revolving credit facility and our non-reusable commitment credit totaling $10.1 million at March 30, 2012.

As part of securing financing in the normal course of business, we issued guarantees related to our receivable financing, capital lease obligations and real estate mortgages which totaled approximately $110.1 million as of March 30, 2012. We are also a guarantor of SCI LLC’s unsecured loan with SANYO Electric which had a balance of $330.3 million as of March 30, 2012. See Note 6: “Long-Term Debt” of the notes to our unaudited consolidated financial statements found elsewhere in this Form 10-Q for further discussion.

For our operating leases, we expect to make cash payments and similarly incur expenses totaling $114.7 million as payments come due. We have not recorded any liability in connection with these operating leases, letters of credit and guarantee arrangements.

Based on historical experience and information currently available, we believe that in the foreseeable future we will not be required to make payments under the standby letters of credit or guarantee arrangements.

Contingencies

We are a party to a variety of agreements entered into in the ordinary course of business pursuant to which we may be obligated to indemnify other parties for certain liabilities that arise out of or relate to the subject matter of the agreements. Some of the agreements entered into by us require us to indemnify the other party against losses due to intellectual property infringement, property damage including environmental contamination, personal injury, failure to comply with applicable laws, our negligence or willful misconduct, or breach of representations and warranties and covenants related to such matters as title to sold assets.

In connection with the SANYO Semiconductor acquisition, we entered into an operational supply agreement that provides that if we continue to operate in certain of the SANYO Semiconductor manufacturing facilities in Japan using SANYO Electric resources through the end of 2012, including certain seconded employees, we received operation support credits of approximately $301.6 million, of which we have used approximately $222.0 million through March 30, 2012, leaving us a balance of $79.6 million as of March 30, 2012. There are no guarantees that we will be able to fully utilize these credits.

We face risk of exposure to warranty and product liability claims in the event that our products fail to perform as expected or such failure of our products results, or is alleged to result, in bodily injury or property damage (or both). In addition, if any of our designed products are alleged to be defective, we may be required to participate in their recall. Depending on the significance of any particular customer and other relevant factors, we may agree to provide more favorable indemnity rights to such customer for valid warranty claims.

From time to time, we have been active in merger and acquisition activity. In connection with these mergers or acquisitions, we have agreed to indemnify the other party or parties to the merger or acquisition agreement for certain claims or occurrences, limited in most instances by time and/or monetary amounts.

We and our subsidiaries provide for indemnification of directors, officers and other persons in accordance with limited liability agreements, certificates of incorporation, by-laws, articles of association or similar organizational documents, as the case may be. We maintain directors’ and officers’ insurance, which should enable us to recover a portion of any future amounts paid.

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In addition to the above, from time to time, we provide standard representations and warranties to counterparties in contracts in connection with sales of our securities and the engagement of financial advisers and also provide indemnities that protect the counterparties to these contracts in the event they suffer damages as a result of a breach of such representations and warranties or in certain other circumstances relating to the sale of securities or their engagement by us.

While our future obligations under certain agreements may contain limitations on liability for indemnification, other agreements do not contain such limitations and under such agreements it is not possible to predict the maximum potential amount of future payments due to the conditional nature of our obligations and the unique facts and circumstances involved in each particular agreement. Historically, payments made by us under any of these indemnities have not had a material effect on our business, financial condition, results of operations or cash flows, and we do not believe that any amounts that we may be required to pay under these indemnities in the future will be material to our business, financial condition, results of operations or cash flows.

See Note 9: “Commitment and Contingencies” of the notes to our unaudited consolidated financial statements under the heading “Legal Matters” in this Form 10-Q for possible contingencies related to legal matters. See also Part I, Item 1 “Business—Government Regulation” of our 2011 Form 10-K for information on certain environmental matters.

Sources and Uses of Cash

We require cash to fund our operating expenses and working capital requirements, including outlays for research and development, to make capital expenditures, for strategic acquisitions and investments, to repurchase our stock and other Company securities, and to pay debt service, including principal and interest and capital lease payments. Our principal sources of liquidity are cash on hand, cash generated from operations and funds from external borrowings and equity issuances. In the near term, we expect to fund our primary cash requirements through cash generated from operations and cash and cash equivalents on hand and short-term investments. Additionally, as part of our business strategy, we review acquisition and divestiture opportunities and proposals on a regular basis.

We believe that the key factors that could affect our internal and external sources of cash include:

• Factors that affect our results of operations and cash flows, including the impact on our business and operations as a result of the Thailand flooding, changes in demand for our products, competitive pricing pressures, effective management of our manufacturing capacity, our ability to achieve further reductions in operating expenses, the impact of our restructuring programs on our production and cost efficiency and our ability to make the research and development expenditures required to remain competitive in our business; and

• Factors that affect our access to bank financing and the debt and equity capital markets that could impair our ability to obtain needed financing on acceptable terms or to respond to business opportunities and developments as they arise, including interest rate fluctuations, macroeconomic conditions, sudden reductions in the general availability of lending from banks or the related increase in cost to obtain bank financing; and our ability to maintain compliance with covenants under our debt agreements in effect from time to time.

Related to the above, see Note 15: “Subsequent Events” of the notes to our unaudited consolidated financial statements found elsewhere in this Form 10-Q for information on the following: (i) the voluntary retirement program at certain SANYO Semiconductor subsidiaries that was initiated on April 30, 2012 and is expected to result in a charge ranging from $40.0 million to $50.0 million during the second quarter of 2012; and (ii) the retirement, on April 16, 2012, of our Zero Coupon Convertible Senior Subordinated Notes due 2024 when the Company paid a gross principal amount of approximately $96.2 million.

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Our ability to service our long-term debt including our senior subordinated notes, to remain in compliance with the various covenants contained in our debt agreements and to fund working capital, capital expenditures and business development efforts will depend on our ability to generate cash from operating activities, which is subject to, among other things, our future operating performance, as well as to general economic, financial, competitive, legislative, regulatory and other conditions, some of which may be beyond our control.

If we fail to generate sufficient cash from operations, we may need to raise additional equity or borrow additional funds to achieve our longer term objectives. There can be no assurance that such equity or borrowings will be available or, if available, will be at rates or prices acceptable to us. We believe that cash flow from operating activities coupled with existing cash and cash equivalents will be adequate to fund our operating and capital needs as well as enable us to maintain compliance with our various debt agreements through at least the next twelve months. To the extent that results or events differ from our financial projections or business plans, our liquidity may be adversely impacted.

During the ordinary course of business, we evaluate our cash requirements and, if necessary, adjust our expenditures for inventory, operating expenditures and capital expenditures to reflect the current market conditions and our projected sales and demand. This evaluation currently includes evaluating the impact of the Thailand flooding and Japan earthquake and resulting tsunami. For example in first quarter of 2012, we paid $50.4 million for capital expenditures, while in the first quarter of 2011 we paid $88.7 million. Our current projection for capital expenditures in 2012 is $200.0 million to $250.0 million, of which our current minimum commitment is $71.5 million. The capital expenditure levels can materially influence our available cash for other initiatives.

Primary Cash Flow Sources

Our long-term cash generation is dependent on the ability of our operations to generate cash. Our cash flows from operations is summarized as follows (in millions):

	Quarter Ended
	March 30, 2012			April 1, 2011
Summarized cash flow from operating activities
Net income	$	29.0		$	36.2
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		61.1			52.8
Non-cash manufacturing expenses associated with favorable supply agreement		—			50.0
Gain on acquisition of SANYO Semiconductor		—			(24.3	)
Non-cash stock compensation expense		7.4			10.4
Non-cash interest		7.2			8.7
Provision for excess inventories		15.8			1.7
Other miscellaneous adjustments		1.7			0.7
Changes in assets and liabilities (exclusive of the impact of acquisitions):
Receivables		27.3			(36.0	)
Inventories		(23.2	)		24.7
Deferred income on sales to distributors		(18.5	)		20.0
Other miscellaneous changes in assets and liabilities		(39.4	)		(19.3	)
Net cash provided by operating activities	$	68.4		$	125.6

Our ability to maintain positive operating cash flows is dependent on, among other factors, our success in achieving our revenue goals and manufacturing and operating cost targets.

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Our management of our assets and liabilities, including both working capital and long-term assets and liabilities, also influences our operating cash flows and each of these components is discussed below.

Working Capital

Working capital fluctuates depending on end-market demand and our effective management of certain items such as receivables, inventory and payables. In times of escalating demand, our working capital requirements may increase as we purchase additional manufacturing materials and increase production. Our working capital may also be affected by restructuring programs, which may require us to use cash for severance payments, asset transfers and contract termination costs. Our working capital, including cash and cash equivalents and short-term investments, was $824.1 million at March 30, 2012 and has fluctuated between $1,076.2 million and $523.7 million over the last eight quarter-ends. Although investments made to fund working capital will reduce our cash balances, these investments are necessary to support business and operating initiatives.

Long-Term Assets and Liabilities

Our long-term assets consist primarily of property, plant and equipment, intangible assets, goodwill, foreign tax receivables and capitalized debt issuance costs.

Our manufacturing rationalization plans have included efforts to utilize our existing manufacturing assets and supply arrangements more efficiently. We believe that near-term access to additional manufacturing capacity, should it be required, could be readily obtained on reasonable terms through manufacturing agreements with third parties. Cash capital expenditures were $50.4 million in the first three months of 2012, compared to cash capital expenditures of $88.7 million during the first three months of 2011. We will continue to look for opportunities to make strategic purchases in the future for additional capacity. As a result of the Thailand flooding, we will also have to adjust our capital expenditures to replace the damaged equipment.

Our long-term liabilities, excluding long-term debt, consist of liabilities under our foreign defined benefit pension plans and contingent tax reserves. In regard to our foreign defined benefit pension plans, generally, our annual funding of these obligations is equal to the minimum amount legally required in each jurisdiction in which the plans operate. This annual amount is dependent upon numerous actuarial assumptions.

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Key Financing Events

Debt Instruments, Guarantees and Related Covenants

The following table presents the components of long-term debt as of March 30, 2012 and December 31, 2011 (dollars in millions):

	March 30, 2012			December 31, 2011
Senior Revolving Credit Facility (up to $325.0 million)	$	—		$	—
Loan with a Japanese company due 2012 through 2018, interest payable quarterly at 2.22% and 2.33%, respectively (1)		330.3			339.8
Zero Coupon Convertible Senior Subordinated Notes due 2024 (net of discount of $0.3 million and $2.0 million, respectively) (2)		95.9			94.2
1.875% Convertible Senior Subordinated Notes due 2025 (net of discount of $4.9 million and $6.6 million, respectively) (3)		90.1			88.4
2.625% Convertible Senior Subordinated Notes due 2026 (net of discount of $21.6 million and $24.5 million, respectively) (4)		210.8			207.9
2.625% Convertible Senior Subordinated Notes due 2026, Series B (net of discount of $21.1 million and $22.0 million, respectively) (5)		177.5			176.6
Loan with Hong Kong bank, interest payable weekly at 1.99% and 2.04%, respectively		40.0			40.0
Loans with Philippine banks due 2012 through 2015, interest payable monthly and quarterly at an average rate of 2.01% and 2.01%, respectively		65.5			68.2
Loans with Chinese bank due 2013, interest payable quarterly at 4.33% and 4.44%, respectively		7.0			7.0
Loans with Japanese banks due through 2013, interest payable monthly and semi-annually at an average rate of 1.72% and 1.71%, respectively		3.1			3.5
Loan with Singapore bank, interest payable weekly at 1.97% and 1.97%, respectively		27.0			25.0
Loan with British finance company, interest payable monthly at 1.95% and 2.42%, respectively		10.9			13.1
U.S. real estate mortgages payable monthly through 2016 at an average rate of 4.857%		31.2			31.6
U.S. equipment financing payable monthly through 2015 at 3.23%		10.1			10.8
Capital lease obligations		89.6			100.9
Long-term debt, including current maturities		1,189.0			1,207.0
Less: Current maturities		(377.1	)		(370.1	)
Long-term debt	$	811.9		$	836.9

(1) This represents Semiconductor Component Industries, LLC (“SCI LLC’s”) unsecured loan with SANYO Electric, which is guaranteed by us.

(2) The Zero Coupon Convertible Senior Subordinated Notes due 2024 may be put back to us at the option of the holders of the notes on April 15 of 2012, 2014 and 2019 or called at our option on or after April 15, 2012. See Note 15: “Subsequent Events” of this Form 10-Q for discussion of the retirement of our Zero Coupon Convertible Senior Subordinated Notes due 2024.

(3) The 1.875% Convertible Senior Subordinated Notes due 2025 may be put back to us at the option of the holders of the notes on December 15 of 2012, 2015 and 2020 or called at our option on or after December 20, 2012.

(4) The 2.625% Convertible Senior Subordinated Notes due 2026 may be put back to us at the option of the holders of the notes on December 15 of 2013, 2016 and 2021 or called at our option on or after December 20, 2013.

(5) The 2.625% Convertible Senior Subordinated Notes due 2026, Series B may be put back to us at the option of the holders of the notes on December 15 of 2016 and 2021 or called at our option on or after December 20, 2016.

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Our Convertible Notes are subordinated to the senior indebtedness of ON Semiconductor and its Guarantor Subsidiaries (as defined in Note 14: “Guarantor and Non-Guarantor Statements” of the notes to our unaudited consolidated financial statements included elsewhere in this report) on the terms described in the indentures for such notes. As of March 30, 2012, we believe that we were in compliance with the indentures relating to our Zero Coupon Convertible Senior Subordinated Notes due 2024, our 1.875% Convertible Senior Subordinated Notes due 2025, our 2.625% Convertible Senior Subordinated Notes due 2026 and our 2.625% Convertible Senior Subordinated Notes due 2026, Series B and with covenants relating to our senior revolving credit facility and various other debt agreements. We believe that we will be able to comply with the various covenants and other requirements contained in such indentures and debt agreements through March 30, 2013.

Cash Management

Our ability to manage cash is limited, as our primary cash inflows and outflows are dictated by the terms of our sales and supply agreements, contractual obligations, debt instruments and legal and regulatory requirements. While we have some flexibility with respect to the timing of capital equipment purchases, we must invest in capital equipment on a timely basis to allow us to maintain our manufacturing efficiency and support our platforms of new products.

New Accounting Pronouncements

For a discussion of new accounting pronouncements, see Note 3: “New Accounting Pronouncements” of the notes to our unaudited consolidated financial statements included elsewhere in this report.

Critical Accounting Policies and Estimates

The accompanying discussion and analysis of our financial condition and results of operations is based upon our unaudited consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States. We believe certain of our accounting policies are critical to understanding our financial position and results of operations. We utilize the following critical accounting policies in the preparation of our financial statements.

Revenue. We generate revenue from sales of our semiconductor products to OEMs, electronic manufacturing service providers and distributors. We also generate revenue, although to a much lesser extent, from manufacturing services provided to customers. Distributor revenue is recognized in various ways within the industry. Some recognize revenue upon sale to the distributor, while others, like us, recognize revenue when the sale is made to the end customer. Additionally, there can often be a lag in the data collection from distributors, which makes the calculation of revenue recognition challenging. Due to our high distributor sales, revenue recognition is a critical accounting policy. We recognize revenue on sales to OEMs and electronic manufacturing service providers and sales of manufacturing services, net of provisions for related sales returns and allowances, when persuasive evidence of an arrangement exists, title and risk of loss pass to the customer (which is generally upon shipment), the price is fixed or determinable and collectability is reasonably assured. Title to products sold to distributors typically passes at the time of shipment by us so we record accounts receivable for the amount of the transaction, reduce our inventory for the products shipped and defer the related margin in our consolidated balance sheet given our inability to reliably estimate up front the effect of the returns and allowances with these distributors. We recognize the related revenue and cost of revenues when the distributor informs us that it has resold the products to the end user. Inaccuracies in the sales or inventory data provided to us by our distributors can therefore result in inaccuracy in our reporting revenues. Although payment terms vary, most distributor agreements require payment within 30 days.

Taxes assessed by government authorities on revenue-producing transactions, including value added and excise taxes, are presented on a net basis (excluded from revenues) in the statement of operations.

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Sales returns and allowances are estimated based on historical experience. Our OEM customers do not have the right to return our products, other than pursuant to the provisions of our standard warranty. Sales to distributors, however, are typically made pursuant to agreements that provide return rights with respect to discontinued or slow-moving products. Under our general agreements, distributors are allowed to return any product that we have removed from our price book. In addition, agreements with our distributors typically contain standard stock rotation provisions permitting limited levels of product returns. However, since we defer recognition of revenue and gross profit on sales to distributors until the distributor resells the product, due to our inability to reliably estimate up front the effect of the returns and allowances with these distributors, sales returns and allowances have minimal impact on our results of operations. Provisions for discounts and rebates to customers, estimated returns and allowances, and other adjustments are provided for in the same period the related revenues are recognized, and are netted against revenues. Given that our revenues consist of a high volume of relatively similar products, our actual returns and allowances and warranty claims have not traditionally fluctuated significantly from period to period, and our returns and allowances and warranty provisions have historically been reasonably accurate.

We generally warrant that products sold to our customers will, at the time of shipment, be free from defects in workmanship and materials and conform to our approved specifications. Subject to certain exceptions, our standard warranty extends for a period of two years. At the time revenue is recognized, we establish an accrual for estimated warranty expenses associated with our sales, recorded as a component of cost of revenues. In addition, we also offer cash discounts to customers for payments received by us within an agreed upon time, generally 10 days after shipment. We accrue reserves for cash discounts as a reduction to accounts receivable and a reduction to revenues, based on experience with each customer.

Freight and handling costs are included in the cost of revenues and are recognized as period expenses during the period in which they are incurred.

Inventories. We carry our inventories not related to an acquisition at the lower of standard cost (which approximates actual cost on a first-in, first-out basis) or market and record provisions for slow moving inventories based upon a regular analysis of inventory on hand compared to historical and projected end user demand. These provisions can influence our results of operations. For example, when demand falls for a given part, all or a portion of the related inventory is reserved, impacting our cost of revenues and gross profit. If demand recovers and the parts previously reserved are sold, we will generally recognize a higher than normal margin. However, the majority of product inventory that has been previously reserved is ultimately discarded. Although we do sell some products that have previously been written down, such sales have historically been relatively consistent on a quarterly basis and the related impact on our margins has not been material.

Inventory acquired in the purchase of a business is stated at the lower of cost or market. Upon the acquisition, we estimate the fair value of the inventory as of the acquisition date. The methodology involves stepping up the value of acquired finished goods and work-in-process to expected sales value less variable costs to dispose.

Deferred Tax Valuation Allowance. We record a valuation allowance to reduce our deferred tax assets to the amount that is more likely than not to be realized. In determining the amount of the valuation allowance, we consider estimated future taxable income as well as feasible tax planning strategies in each taxing jurisdiction in which we operate. If we determine that we will not realize all or a portion of our remaining deferred tax assets, we will increase our valuation allowance with a charge to income tax expense. Conversely, if we determine that we will ultimately be able to utilize all or a portion of the deferred tax assets for which a valuation allowance has been provided, the related portion of the valuation allowance will be released to income as a credit to income tax expense. We maintain a valuation allowance for our domestic deferred tax assets and most of our foreign deferred tax assets. Additionally, throughout 2009, 2010, and 2011, no incremental domestic deferred tax benefits were recognized.

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Impairment of Long-Lived Assets. We evaluate the recoverability of the carrying amount of our property, plant and equipment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be fully recoverable. Impairment is assessed when the undiscounted expected cash flows derived for an asset are less than its carrying amount. Impairment losses are measured as the amount by which the carrying value of an asset exceeds its fair value and are recognized in operating results. We continually apply our best judgment when applying these impairment rules to determine the timing of the impairment test, the undiscounted cash flows used to assess impairments and the fair value of an impaired asset. The dynamic economic environment in which we operate and the resulting assumptions used to estimate future cash flows impact the outcome of our impairment tests. In recent years, most of our assets that have been impaired consist of assets that were ultimately abandoned, sold or otherwise disposed of due to cost reduction activities and the consolidation of our manufacturing facilities. In some instances, these assets have subsequently been sold for amounts higher than their impaired value. When material, these gains are recorded in the restructuring, asset impairments and other, net line item in our consolidated statement of operations and disclosed in the footnotes to the financial statements.

Goodwill. We evaluate our goodwill for potential impairment on an annual basis or whenever events or circumstances indicate that an impairment may exist. Historically, we were required to test goodwill using a two-step process. We now have the option to first assess qualitative factors prior to proceeding with the two-step quantitative evaluation process. The first step of the two-step quantitative evaluation in the goodwill impairment test, used to identify potential impairment, compares the estimated fair value of the reporting unit containing our goodwill with the related carrying amount. If the estimated fair value of the reporting unit exceeds its carrying amount, the reporting unit’s goodwill is not considered to be impaired and the second step is unnecessary. The second step of the test compares the implied fair value of the reporting unit’s goodwill, determined in the same manner as the amount of goodwill recognized in a business combination, with the carrying amount of such goodwill. If the carrying amount of the reporting unit’s goodwill exceeds the implied fair value of that goodwill, an impairment loss is recognized in an amount equal to that excess. We perform our annual impairment analysis as of the first day of the fourth quarter of each year. We determine the fair value of each reporting unit using the income approach, which is based on the present value of estimated future cash flows, using management’s assumptions and forecasts as of the acquisition date. Our methodologies used for valuing goodwill have not changed.

We have determined that our product families, which are components of our operating segments, constitute reporting units for purposes of allocating and testing goodwill. Because the product families are one level below the operating segments, they constitute individual businesses and our segment management regularly reviews the operating results of each product family. As of each acquisition date, all goodwill acquired was assigned to the product families that were expected to benefit from the synergies of the respective acquisition. The amount of goodwill assigned to each reporting unit was the difference between the fair value of the reporting unit and the fair value of identifiable assets and liabilities allocated to the reporting unit as of the acquisition date.

Our next annual test for impairment is expected to be performed on the first day of the fourth quarter of 2012; however, identification of a triggering event may result in the need for earlier reassessments of the recoverability of our goodwill and may result in material impairment charges in future periods.

Defined Benefit Plans and related benefits. We maintain defined benefit pension plans covering certain of our foreign employees. For financial reporting purposes, net periodic pension costs and estimated withdrawal liabilities are calculated based upon a number of actuarial assumptions, including a discount rate for plan obligations, assumed rate of return on pension plan assets and assumed rate of compensation increase for plan employees. All of these assumptions are based upon management’s judgment, considering all known trends and uncertainties. Actual results that differ from these assumptions impact the expense recognition and cash funding requirements of our pension plans.

Additionally, we have liabilities associated with our estimated portion of underfunded pension obligations relating to certain employees participating in the SANYO Electric or its affiliate multi-employer defined benefit pension plans, from which we intend to withdraw.

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Contingencies. We are involved in a variety of legal matters that arise in the normal course of business. Based on the available information, we evaluate the relevant range and likelihood of potential outcomes and we record the appropriate liability when the amount is deemed probable and estimable.

Valuation of Stock Compensation. The fair value of each option grant is estimated as of the date of grant using a lattice-based option valuation model. The lattice model uses: 1) a constant volatility; 2) an employee exercise behavior model (based on an analysis of historical exercise behavior); and 3) the treasury yield curve to calculate the fair value of shares issued for each option grant. We continue to use the Black-Scholes option-pricing model to calculate the fair value of shares issued under the 2000 Employee Stock Purchase Plan.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

We are exposed to financial market risks, including changes in interest rates and foreign currency exchange rates. To mitigate these risks, we utilize derivative financial instruments. We do not use derivative financial instruments for speculative or trading purposes.

At March 30, 2012, our long-term debt (including current maturities) totaled $1,189.0 million. We have no interest rate exposure to rate changes on our fixed rate debt, which totaled $706.5 million. We do have interest rate exposure with respect to the $482.5 million balance on our variable interest rate debt outstanding as of March 30, 2012. A 50 basis point increase in interest rates would impact our expected annual interest expense for the next twelve months by approximately $2.4 million. However, some of this impact would be offset by additional interest earned on our cash and cash equivalents should rates on deposits and investments also increase.

To ensure the adequacy and effectiveness of our foreign exchange hedge positions, we continually monitor our foreign exchange forward positions, both on a stand-alone basis and in conjunction with their underlying foreign currency exposures, from an accounting and economic perspective. However, given the inherent limitations of forecasting and the anticipatory nature of exposures intended to be hedged, we cannot assure that such programs will offset more than a portion of the adverse financial impact resulting from unfavorable movements in foreign exchange rates.

We are subject to risks associated with transactions that are denominated in currencies other than our functional currencies, as well as the effects of translating amounts denominated in a foreign currency to the United States Dollar as a normal part of the reporting process. Our Japanese operations utilize Japanese Yen as the functional currency, which results in the Company recording a translation adjustment that is included as a component of accumulated other comprehensive income. With the acquisition of SANYO Semiconductor, we have increased our revenue, expense and capital purchases in Japanese Yen, thus increasing the effects of this translation.

We enter into forward foreign currency contracts that economically hedge the gains and losses generated by the re-measurement of certain recorded assets and liabilities in non-functional currency. Changes in the fair value of these undesignated hedges are recognized in other (income) expense immediately as an offset to the changes in fair value of the assets or liabilities being hedged. The notional amount of foreign exchange contracts at March 30, 2012 and December 31, 2011 was $170.2 million and $203.4 million, respectively. Our policies prohibit speculation on financial instruments, trading in currencies for which there are no underlying exposures, or entering into trades for any currency to intentionally increase the underlying exposure. Substantially, all of our revenue is transacted in U.S. dollars. However, a significant amount of our operating expenditures and capital purchases are transacted in local currencies, including, Japanese Yen, Euros, Malaysian ringgit, Philippines peso, Singapore dollars, Swiss francs, Chinese renminbi, Czech koruna, and British pounds sterling. Due to the materiality of our transactions in these local currencies, our results are impacted by changes in currency exchange rates measured against the U.S. dollar. For example, we determined that based on a hypothetical weighted-average change of 10% in currency exchange rates, our results would have impacted our income before taxes by approximately $12.7 million as of March 30, 2012, assuming no offsetting hedge positions.

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Item 4. Controls and Procedures

Evaluation of Disclosure Controls and Procedures. We carried out an evaluation, under the supervision and with the participation of our management, including our Chief Executive Officer and Chief Financial Officer, of the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e)) of the Securities Exchange Act of 1934 as amended (the “Exchange Act”). Based upon that evaluation, our Chief Executive Officer and Chief Financial Officer concluded that, as of the end of the period covered in this report, our disclosure controls and procedures were effective to ensure that information required to be disclosed in reports filed under the Exchange Act is recorded, processed, summarized and reported within the required time periods and is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure.

Changes in Internal Control Over Financial Reporting.

On January 1, 2011, we acquired SANYO Semiconductor and certain related assets, which operated under its own set of systems and internal controls. We are separately maintaining SANYO Semiconductor’s systems and much of its control environment until we are able to incorporate SANYO Semiconductor’s processes into our own systems and control environment.

There have been no other changes to our internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) that occurred during the fiscal quarter ended March 30, 2012 which have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II: OTHER INFORMATION

Item 1. Legal Proceedings

See Note: 9 “Commitments and Contingencies” under the heading “Legal Matters” of the notes to the unaudited financial statements included elsewhere in this Form 10-Q for legal proceedings and related matters.

Item 1A. Risk Factors

There have been no material changes in our assessment of our risk factors included in our 2011 Form 10-K. This Form 10-Q includes “forward-looking statements,” as that term is defined in Section 27A of the Securities Act of 1933, as amended and Section 21E of the Exchange Act. All statements, other than statements of historical facts, included or incorporated in this Form 10-Q could be deemed forward-looking statements, particularly statements about our plans, strategies and prospects under the heading “Management’s Discussion and Analysis of Financial Condition and Results of Operations.” Forward-looking statements are often characterized by the use of words such as “believes,” “estimates,” “expects,” “projects,” “may,” “will,” “intends,” “plans,” or “anticipates,” or by discussions of strategy, plans or intentions. All forward-looking statements in this Form 10-Q are made based on our current expectations and estimates, and involve risks, uncertainties and other factors that could cause results or events to differ materially from those expressed in the forward-looking statements. Among these factors are the uncertainty surrounding natural disasters such as the ongoing impact of the recent flooding in Thailand, including our ability to effectively shift production to other facilities in order to maintain supply continuity and related revenues for our customers, the fact that the timing of events could differ materially from those anticipated, uncertainties as to restructuring, impairment and other costs and charges including the potential for unanticipated charges and/or lost revenues not currently contemplated. Other factors include our revenues and operating performance, poor economic conditions and markets (including current credit and financial conditions), effects of exchange rate fluctuations, the cyclical nature of the semiconductor industry, changes in demand for our products, changes in inventories at our customers and distributors, technological and product development risks, enforcement and protection of our intellectual property rights and related risks, availability of raw materials, electricity, gas, water and other supply chain uncertainties, our ability to effectively shift production to other facilities in order to maintain supply continuity for our customers, variable demand and the aggressive pricing environment for semiconductor products, our ability to successfully manufacture in increasing volumes on a cost-effective basis and with acceptable quality for our current products, competitor actions, including the adverse impact of competitor product announcements, pricing and gross profit pressures, loss of key customers, order cancellations or reduced bookings, changes in manufacturing yields, control of costs and expenses and realization of cost savings from restructurings (including the voluntary retirement program for employees in our SANYO Semiconductor Products Group), significant litigation, risks associated with decisions to expend cash reserves for various uses such as debt prepayment or acquisitions rather than to retain such cash for future needs, risks associated with acquisitions and dispositions (including from integrating and consolidating and timely filing financial information with the Commission for acquired businesses and difficulties encountered in accurately predicting the future financial performance of acquired businesses), risks associated with our substantial leverage and restrictive covenants in our debt agreements from time to time, risks associated with our worldwide operations including foreign employment and labor matters associated with unions and collective bargaining arrangements as well as man-made and/or natural disasters such as the flooding in Thailand or the Japan earthquake and tsunami affecting our operations and finances/financials, the threat or occurrence of international armed conflict and terrorist activities both in the United States and internationally, risks and costs associated with increased and new regulation of corporate governance and disclosure standards (including pursuant to Section 404 of the Sarbanes-Oxley Act of 2002), risks related to new legal requirements and risks involving environmental or other governmental regulation. Additional factors that could affect our future results or events are described under Part I, Item 1A. “Risk Factors” in our 2011 Form 10-K, and from time to time in our other Commission reports. You should carefully consider the trends, risks and uncertainties described in this Form 10-Q, the 2011 Form 10-K and subsequent reports filed with or furnished to the Commission before making any investment decision with respect to our securities. If any of these trends, risks or uncertainties actually occurs or continues, our business, financial condition or operating results could be materially adversely affected, the trading prices of our securities could decline, and you could lose all or part of your investment.

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Readers are cautioned not to place undue reliance on forward-looking statements. We assume no obligation to update such information. All forward-looking statements attributable to us or persons acting on our behalf are expressly qualified in their entirety by this cautionary statement.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

None.

Item 3. Defaults Upon Senior Securities

None.

Item 4. Mine Safety Disclosures

None.

Item 5. Other Information

None

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Item 6. Exhibits

EXHIBIT INDEX

Exhibit No.		Exhibit Description*
	10.1	Performance Based Restricted Stock Unit Award Agreement under ON Semiconductor Corporation Amended and Restated Stock Incentive Plan (form of Performance Based Award for Senior Vice Presidents and Above) (1)(2)
	31.1	Certification by CEO pursuant to Rule 13(a) - 14(a) or 15d - 14(a) of the Securities and Exchange Act of 1934, as adopted pursuant to Section 302 of Sarbanes-Oxley Act of 2002(2)
	31.2	Certification by CFO pursuant to Rule 13(a) - 14(a) or 15d - 14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of Sarbanes-Oxley Act of 2002(2)
	32.1	Certification by CEO and CFO pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (3)
	101.INS	XBRL Instance Document(4)
	101.SCH	XBRL Taxonomy Extension Schema Document(4)
	101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document(4)
	101.DEF	XBRL Taxonomy Extension Definition Linkbase Document(4)
	101.LAB	XBRL Taxonomy Extension Label Linkbase Document(4)
	101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document(4)

* Reports filed under the Securities and Exchange Act (Form 10-K, Form 10-Q and Form 8-K) are filed under file number File No. 000-30419.

(1) Management contract or compensatory plan, contract, or arrangement

(2) Filed herewith.

(3) Furnished herewith.

(4) In accordance with Rule 406T of Regulation S-T, the XBRL related information shall not be deemed “filed” for purposes of Section 18 of the Securities and Exchange Act of 1934, as amended, or otherwise subject to the liability of that section, and shall not be incorporated by reference into any registration statement or other document filed under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such filing.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	ON SEMICONDUCTOR CORPORATION                                              (Registrant)
Date: May 3, 2012	By:	/ S/    DONALD COLVIN
		Donald Colvin
		Executive Vice President and Chief Financial Officer (Principal Financial Officer, Principal Accounting Officer and officer duly authorized to sign this report)

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EXHIBIT INDEX

Exhibit No.		Exhibit Description*
	10.1	Performance Based Restricted Stock Unit Award Agreement under ON Semiconductor Corporation Amended and Restated Stock Incentive Plan (form of Performance Based Award for Senior Vice Presidents and Above) (1)(2)
	31.1	Certification by CEO pursuant to Rule 13(a) - 14(a) or 15d - 14(a) of the Securities and Exchange Act of 1934, as adopted pursuant to Section 302 of Sarbanes-Oxley Act of 2002(2)
	31.2	Certification by CFO pursuant to Rule 13(a) - 14(a) or 15d - 14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of Sarbanes-Oxley Act of 2002(2)
	32.1	Certification by CEO and CFO pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (3)
	101.INS	XBRL Instance Document(4)
	101.SCH	XBRL Taxonomy Extension Schema Document(4)
	101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document(4)
	101.DEF	XBRL Taxonomy Extension Definition Linkbase Document(4)
	101.LAB	XBRL Taxonomy Extension Label Linkbase Document(4)
	101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document(4)

* Reports filed under the Securities and Exchange Act (Form 10-K, Form 10-Q and Form 8-K) are filed under file number File No. 000-30419.

(1) Management contract or compensatory plan, contract, or arrangement

(2) Filed herewith.

(3) Furnished herewith.

(4) In accordance with Rule 406T of Regulation S-T, the XBRL related information shall not be deemed “filed” for purposes of Section 18 of the Securities and Exchange Act of 1934, as amended, or otherwise subject to the liability of that section, and shall not be incorporated by reference into any registration statement or other document filed under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such filing.

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EX-10.1

Exhibit 10.1

[FORM OF SENIOR VP & ABOVE, first used in March 2012]

ON SEMICONDUCTOR CORPORATION

AMENDED AND RESTATED STOCK INCENTIVE PLAN

PERFORMANCE-BASED RESTRICTED STOCK UNITS AWARD AGREEMENT

ON Semiconductor Corporation, a Delaware Corporation, (“Company”) hereby grants to                      (“Grantee”), a Participant in the ON Semiconductor Corporation Amended and Restated Stock Incentive Plan, as amended from time-to-time (“Plan”), a Performance-Based Restricted Stock Units Award (“Award”) for Units (“Units”) representing shares of the common stock of the Company (“Stock”). This agreement to grant Stock Units (“Award Agreement” or “Grant Agreement”) is made effective as of the          day of                 ,          (“Grant Date”). If Grantee is a Covered Employee, this Award is designated as a “Performance Compensation Award” and as such is granted pursuant to Article 11 of the Plan.

RECITALS

A.          The Board of Directors of the Company (“Board”) has adopted the Plan as an incentive to retain employees, officers, and non-employee Directors of, and Consultants to, the Company and to enhance the ability of the Company to attract, retain and motivate individuals upon whose judgment, interest and special effort the successful conduct of the Company’s operation is largely dependent.

B.          Under the Plan, the Board has delegated its authority to administer the Plan to the Compensation Committee of the Board (“Committee”).

C.          The Committee has approved the granting of Units to the Grantee pursuant to the Plan to provide an incentive to the Grantee to focus on the long-term growth of the Company.

D.          To the extent not specifically defined herein or in the Grantee’s employment agreement or comparable agreement, as amended from time to time (“Employment Agreement”), all capitalized terms used in this Award Agreement shall have the meaning set forth in the Plan unless a contrary meaning is set forth in the Employment Agreement.

In consideration of the mutual covenants and conditions hereinafter set forth and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the Company and the Grantee agree as follows:

1.      Grant of Units.    The Company hereby grants to the Grantee a Performance-Based Restricted Stock Unit Award for              Units, representing the right to receive payment of the same number of shares of Stock, subject to the terms and conditions of this Award Agreement and the provisions of the Plan, which terms are incorporated herein by reference.

2.      Vesting of Units and Related Information.

2.1        Vesting Schedule.    The performance measurement period for this Award begins on                          ,          and ends on                          ,          (“Performance Measurement Period”). Subject to the terms and conditions set forth in this Grant Agreement, the Units granted pursuant to paragraph 1 will vest (if at all) on each Vesting Date provided that some or all of the performance goals (“Performance Goals”) described below are achieved. For

purposes of this Grant Agreement, the term “Vesting Date” for any Performance Measurement Period means the date set forth in the table below, subject to the achievement of the relevant Performance Goals. Whether the Performance Goals applicable to each Vesting Date have been achieved shall be determined by the Company or Committee, as applicable, pursuant to paragraph 2.5 below.

Performance Measurement Period (based on the Company’s quarterly &   annual reporting   periods)	Measurement   Period #	Portion of Units     Eligible for      Vesting	Performance Goals     (dollars in millions)	Vesting Date
			Adjusted Non-GAAP EBITDA
FY	1	1/6	Threshold - $	Date on which the Company files its Form 10-K for FY
		1/6	Target - $
Fiscal Q1-	2	1/24	Threshold - $	Date on which the Company files its Form 10-Q for 1st quarter of FY
		1/24	Target - $
Fiscal Q2-	3	1/24	Threshold - $	Date on which the Company files its Form 10-Q for 2nd quarter of FY
		1/24	Target - $
Fiscal Q3-	4	1/24	Threshold - $	Date on which the Company files its Form 10-Q for 3rd quarter of FY
		1/24	Target - $
Fiscal Q4-	5	1/24	Threshold -$	Date on which the Company files its Form 10-K for FY
		1/24	Target - $
Fiscal Q1-	6	1/24	Threshold - $	Date on which the Company files its Form 10-Q for 1st quarter of FY
		1/24	Target - $
Fiscal Q2-	7	1/24	Threshold - $	Date on which the Company files its Form 10-Q for 2nd quarter of FY
		1/24	Target - $
Fiscal Q3-	8	1/24	Threshold - $	Date on which the Company files its Form 10-Q for 3rd quarter of FY
		1/24	Target - $
Fiscal Q4-	9	1/24	Threshold - $	Date on which the Company files its Form 10-K for FY
		1/24	Target - $

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2.2        Terms and Conditions of Vesting.

(a)      If the Adjusted Non-GAAP EBITDA (as defined below) Performance Goal is achieved for a Performance Measurement Period (as described in the table above), the applicable portion of Units shall vest on the relevant Vesting Date.

(b)      If the Performance Goal for the first Performance Measurement Period, fiscal year         , is not achieved, the Units and the Performance Goal will carry forward and the Units will vest if the Performance Goal is achieved during any four consecutive fiscal quarters, provided that the cumulative Adjusted Non-GAAP EBITDA for such four consecutive fiscal quarters is at least $             million with respect to the Threshold Performance Measure and at least $             million with respect to the Target Performance Measure. Any unvested Units for the first Performance Measurement Period will not expire until all unvested Units for the Award expire as provided in paragraph 2.2(f).

(c)      If the Threshold Performance Measure is achieved on the relevant Vesting Date, 50% of the eligible Units shall vest on the relevant Vesting Date. If the applicable Target Performance Measure is achieved on the relevant Vesting Date, the other 50% of the eligible Units shall vest on the relevant Vesting Date.

(d)      If the Threshold Performance Measure is achieved on the relevant Vesting Date, but the Target Performance is not achieved, 50% of the eligible Units shall vest on the relevant Vesting Date. The remaining 50% of Units associated with the Target Performance Measure shall carry forward to subsequent quarters until either the Target Performance Measure (i) is achieved, and then all Units carried forward related to the Target Performance measure shall vest on the relevant Vesting Date, or (ii) is not achieved, and the Award has expired.

(e)      If the Threshold Performance Measure is not achieved on the relevant Vesting Date, no portion of the Units shall vest on the relevant Vesting Date. Any unvested Units shall carry forward to subsequent quarters until either the Threshold Performance Measure or Target Performance Measure (i) is achieved, and then all Units carried forward related to these measures shall vest on the relevant Vesting Date, or (ii) is not achieved, and the Award has expired.

(f)      All Units and all Units carried forward related to applicable Performance Goals shall, subject to achievement of such goals, vest on the relevant Vesting Date and any remaining unvested Units as of the Performance Measurement Period ending date (i.e.,                              ,         ) shall expire the earlier of (i) the day following the date on which the Company files its Form 10-K for fiscal year         , or (ii) the day following the last day of the first quarter of fiscal year          provided that the Company or Committee, as applicable, has determined whether the Performance Goals applicable to each Vesting Date have been achieved in accordance with paragraph 2.5 below.

EXAMPLE OF CARRYOVER (for illustrative purposes only): Assume you are granted 24,000 Units. One-twenty fourth or 1,000 of the Units are available to vest upon achievement of the applicable Performance Goals for Performance Measurement Periods #2 through #9.

3

• Assume that actual performance for Q1-         is $             million Adjusted Non-GAAP EBITDA. In Q1-         the Threshold Performance Measure ($             million) was met but the Target Performance Measure ($             million) was not so 1,000 Units vest and 1,000 Units carry forward to subsequent quarters until the Q1-        Target Performance Measure ($             million) is met.

• Assume that actual performance for Q2-         is $             million Adjusted Non-GAAP EBITDA. In Q2-        , the Threshold Performance Measure ($             million) was met but the Target Performance Measure ($             million) was not so 1,000 Units vest and 1,000 carry forward to subsequent quarters until the Q2-         Target Performance Measure ($             million) is met. Additionally, the 1,000 unvested Units from Q1-         would vest because the Q1-         Target Performance Measure ($             million) was met.

• The vesting of Units will continue in this manner until the unvested Units expire in accordance with paragraph 2.2(f).

2.3        Performance Goal Defined.

(a)      Adjusted Non-GAAP EBITDA.    For the purposes of this Agreement “Adjusted Non-GAAP EBITDA” shall mean the Company’s (which includes SANYO Semiconductor related operations and activities and any merger and acquisition activity, and net income attributable to minority interest) consolidated earnings, before interest (income or expense), taxes, depreciation and amortization (or “EBITDA”) for the applicable Performance Measurement Period, calculated taking into account any timely adjustments made in accordance with paragraph 2.4. If the Committee determines that an alternative method would be more appropriate to achieve the objectives of this Award then such method shall be applied to determine Adjusted Non-GAAP EBITDA for the applicable Performance Measurement Period; provided, however, if the Grantee is a Covered Employee, for Performance Measurement Period #1, the Committee’s determination must be made before the date that is 90 days after the commencement of fiscal year          and provided further, for Performance Measurement Periods #2 through #9, the Committee’s determination must be made before the date on which 25% of the applicable fiscal quarter has elapsed. For purposes of this Agreement, the term “GAAP” means United States generally accepted accounting principles consistently applied.

2.4        Adjustments to Non-GAAP EBITDA.    If applicable to the Company for purposes of calculating Non-GAAP EBITDA for a particular Performance Measurement Period, the Company, or Committee if the Grantee is a Covered Employee, shall adjust Non-GAAP EBITDA to exclude the following: (i) restructuring, asset impairments and other, net; (ii) goodwill and intangible asset impairment; (iii) non-cash manufacturing expenses; (iv) actuarial gains or losses on pension plans and other pension benefits; (v) gain or loss on acquisitions; (vi) gain or loss on debt repurchase, debt exchange, early extinguishment of debt; (vii) expensing of inventory fair market value step up; and (viii) extraordinary items. For the avoidance of doubt, Non-GAAP EBITDA, as adjusted, shall specifically include merger and acquisition related operations and activities of the Company, including SANYO Semiconductor.

In addition, if the Grantee is not a Covered Employee, the Company may, as it deems appropriate in its sole discretion, exclude the effect (whether positive or negative) of any of the following types of events or matters with respect to the Company occurring after the Grant

4

Date of the Award: (a) impacts of natural disasters; and (b) other unusual or infrequent material matters or material events. Each such adjustment, if any, shall be made solely for the purpose of providing a consistent basis from period-to-period for the calculation of the Performance Goals in order to prevent the dilution or enlargement of the Grantee’s rights with respect to the Award.

If the Grantee is a Covered Employee, the Committee may, (i) for Performance Measurement Period #1, prior to the date that is 90 days after the commencement of fiscal year         , and (ii) for Performance Measurement Periods #2 through #9, prior to the date on which 25% of the applicable fiscal quarter has elapsed, adjust the Performance Goals, as it deems appropriate in its sole discretion, to exclude the effect (whether positive or negative) of any of the following types of events or matters with respect to the Company occurring after the Grant Date of the Award: (a) impacts of natural disasters; and (b) other unusual or infrequent material matters or material events. Each such adjustment, if any, shall be made solely for the purpose of providing a consistent basis from period-to-period for the calculation of the Performance Goals in order to prevent the dilution or enlargement of the Grantee’s rights with respect to the Award.

Notwithstanding anything in this Agreement to the contrary, if the Grantee is a Covered Employee, any adjustments to Non-GAAP EBITDA for a particular Performance Measurement Period shall only apply to the vesting of Units associated with that particular Performance Measurement Period and not with respect to the vesting of Units carried over from prior Performance Measurement Periods pursuant to paragraph 2.2.

2.5        Final Determination of Performance Goals Attained.    The Company (or the Committee with respect to grants to employees who are Covered Employees under Section 162(m) of the Code) shall be responsible for determining in good faith whether, and to what extent, the Performance Goals set forth in this Grant Agreement have been achieved. The Company, or the Committee, as applicable, may reasonably rely on information from, and representations by, individuals within the Company in making such determination and when made such determination shall be final and binding on the Grantee.

3.      Termination of Employment.

3.1        General.    Subject to the provisions of paragraph 3.2 below, if the Grantee terminates employment with the Company for any reason (including upon a termination for Cause), any unvested Units will be canceled and forfeited as of the date of Grantee’s termination of employment. In other words, the Grantee must be employed by the Company on the relevant Vesting Date to receive any payment with respect to the Units that vest on such Vesting Date. In no event shall any Units vest after the earlier of (i) the day after the date on which the Company files its Form 10-K for fiscal year         , or (ii) the day after the last day of the first quarter of fiscal year         .

3.2        Change in Control.    In the event the Company terminates the Grantee’s employment without Cause (including, if applicable, a termination for Good Reason as defined in Grantee’s Employment Agreement or similar document) within two (2) years following a Change in Control, then all unvested Units shall become immediately vested. The Vesting Date for any Units that vest pursuant to this paragraph 3.2 shall be the date of the Grantee’s termination of employment.

5

4.      Time and Form of Payment.    Subject to the provisions of this Award Agreement and the Plan, as Units vest on the Vesting Dates set forth in paragraph 2 or paragraph 3.2, as the case may be, the Company will deliver to the Grantee the same number of whole shares of Stock, rounded up or down. Subject to paragraph 20, the Company shall deliver the vested shares (if any) within 15 days of the applicable Vesting Date.

5.      Nontransferability.    The Units granted by this Grant Agreement shall not be transferable by the Grantee or any other person claiming through the Grantee, either voluntarily or involuntarily, except by will or the laws of descent and distribution or as otherwise provided under Article 13 of the Plan.

6.      Adjustments.    In the event of a stock dividend or in the event the Stock shall be changed into or exchanged for a different number or class of shares of stock of the Company or of another corporation, whether through reorganization, recapitalization, stock split-up, combination of shares, merger or consolidation, there shall be substituted for each such remaining share of Stock then subject to this Grant Agreement the number and class of shares of stock into which each outstanding share of Stock shall be so exchanged, all as set forth in Section 5.3 of the Plan.

7.      Delivery of Shares.    No shares of Stock shall be delivered under this Award Agreement until (i) the Units vest pursuant to paragraph 2 or paragraph 3 above, as the case may be; (ii) approval of any governmental authority required in connection with the Award Agreement, or the issuance of shares thereunder, has been received by the Company; (iii) if required by the Committee, the Grantee has delivered to the Company documentation (in form and content acceptable to the Company in its sole and absolute discretion) to assist the Company in concluding that the issuance to the Grantee of any share of Stock under this Grant Agreement would not violate the Securities Act of 1933 or any other applicable federal or state securities laws or regulations; (iv) the Grantee has complied with paragraph 13 below of this Award Agreement in order for the proper provision for required tax withholdings to be made; and (v) the Grantee has executed and returned this Grant Agreement to the Company (which, in the case of an Grant Agreement provided to the Grantee in electronic format, requires that the Grantee click the “ACCEPT” button). This Grant Agreement must be executed by Grantee no later than, the earlier of (i) eleven (11) months from the Grant Date (through and including the normal close of business of the Company for its headquarters location in Phoenix, Arizona on                              ,         ), or (ii) the date preceding the first Vesting Date described in paragraph 2 of this Grant Agreement.

8.      Securities Act.    The Company shall not be required to deliver any shares of Stock pursuant to the vesting of Units if, in the opinion of counsel for the Company, such issuance would violate the Securities Act of 1933 or any other applicable federal or state securities laws or regulations.

9.      Voting and Other Stockholder Related Rights.    The Grantee will have no voting rights or any other rights as a stockholder of the Company (e.g., no rights to cash dividends) with respect to unvested Units until the Units become vested and the Company issues shares of Stock to the Grantee.

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10.      Delivery of Documents and Notices.    Any document relating to participation in the Plan or any notice required or permitted hereunder shall be given in writing and shall be deemed effectively given (except to the extent that this Grant Agreement provides for effectiveness only upon actual receipt of such notice) upon personal delivery, electronic delivery at the e-mail address, if any, provided for the Grantee by the Company or an Affiliate, or upon deposit in the U.S. Post Office or foreign postal service, or with a nationally recognized overnight courier service, with postage and fees prepaid, addressed to the other party at the current address on file with the Company or at such other address as such party may designate in writing from time-to-time to the other party.

10.1        Description of Electronic Delivery.    The Plan documents, which may include but do not necessarily include: the Plan, a grant notice, this Grant Agreement, the Plan Prospectus, and any reports of the Company provided generally to the Company’s stockholders, may be delivered to the Grantee electronically. In addition, the Grantee may deliver electronically any grant notice and this Grant Agreement to the Company or to such third party involved in administering the Plan as the Company may designate from time-to-time. Such means of electronic delivery may include but do not necessarily include the delivery of a link to a Company intranet or the internet site of a third party involved in administering the Plan, the delivery of the document via e-mail or such other means of electronic delivery specified by the Company.

10.2        Consent to Electronic Delivery.    The Grantee acknowledges that Grantee has read paragraph 10.1 and consents to the electronic delivery of the Plan documents and any grant notice. The Grantee acknowledges that Grantee may receive from the Company a paper copy of any documents delivered electronically at no cost by contacting the Company by telephone or in writing.

11.      Administration.    This Award Agreement is subject to the terms and conditions of the Plan and the Plan shall in all respects be administered by the Committee in accordance with the terms and provisions of the Plan. The Committee shall have the sole and complete discretion with respect to all matters reserved to it by the Plan and decisions of the majority of the Committee with respect to the Plan and this Award Agreement shall be final and binding upon the Grantee and the Company. In the event of any conflict between the terms and conditions of this Grant Agreement and the Plan, the provisions of the Plan shall control.

12.      Continuation of Employment.    This Grant Agreement shall not be construed to confer upon the Grantee any right to continue employment with the Company and shall not limit the right of the Company, in its sole and absolute discretion, to terminate Grantee’s employment at any time.

13.      Responsibility for Taxes and Withholdings.    Regardless of any action the Company or the Grantee’s actual employer (“Employer”) takes with respect to any or all income tax, social insurance, payroll tax, payment on account or other tax-related items related to the Grantee’s participation in the Plan and legally applicable to the Grantee (“Tax-Related Items”), the Grantee acknowledges that the ultimate liability for all Tax-Related Items is and remains the

7

Grantee’s responsibility and may exceed the amount actually withheld by the Company or the Employer. The Grantee further acknowledges that the Company and/or the Employer (i) make no representations or undertakings regarding the treatment of any Tax-Related Items in connection with any aspect of the Units, including the grant of the Units, the vesting of Units, the conversion of the Units into shares or the receipt of an equivalent cash payment, the subsequent sale of any shares acquired at vesting and the receipt of any dividends and/or dividend equivalents; and (ii) do not commit to and are under no obligation to structure the terms of the grant or any aspect of the Units to reduce or eliminate the Grantee’s liability for Tax-Related Items or achieve any particular tax result. Further, if the Grantee has become subject to tax in more than one jurisdiction between the Grant Date and the date of any relevant taxable event, the Grantee acknowledges that the Company and/or the Employer (or former employer, as applicable) may be required to withhold or account for Tax-Related Items in more than one jurisdiction.

Prior to any relevant taxable or tax withholding event, as applicable, the Grantee shall pay, or make adequate arrangements satisfactory to the Company and/or the Employer to satisfy all Tax-Related Items. In this regard, pursuant to Article 17 of the Plan, if permissible under local law and unless otherwise provided by the Committee prior to the vesting of the shares, the Grantee authorizes the Company or the Employer, or their respective agents, to withhold all applicable Tax-Related Items in shares of Stock to be issued upon vesting/settlement of the Units. Alternatively, or in addition, the Grantee authorizes the Company and/or the Employer, or their respective agents, at the Company’s discretion, to satisfy the obligations with regard to all Tax-Related Items by one or a combination of the following: (i) withholding from the Grantee’s wages or other cash compensation paid to the Grantee by the Company and/or the Employer; (ii) withholding from proceeds of the sale of shares of Stock acquired upon vesting/settlement of the Units either through a voluntary sale or through a mandatory sale arranged by the Company (on the Grantee’s behalf pursuant to this authorization); (iii) personal check or other cash equivalent acceptable to the Company; or (iv) any other means as determined appropriate by the Company or the Committee.

The Company may withhold or account for Tax-Related Items by considering applicable minimum statutory withholding amounts or other applicable withholding rates. If the obligation for Tax-Related Items is satisfied by withholding a number of shares of Stock as described herein, for tax purposes, the Grantee shall be deemed to have been issued the full number of shares of Stock subject to the Award, notwithstanding that a number of the shares of Stock are held back solely for the purpose of paying the Tax-Related Items due as a result of the Grantee’s participation in the Plan.

Finally, the Grantee shall pay to the Company or to the Employer any amount of Tax-Related Items that the Company or the Employer may be required to withhold or account for as a result of the Grantee’s participation in the Plan that cannot be satisfied by the means previously described. The Company may refuse to issue or deliver shares or the proceeds of the sale of shares of Stock if the Grantee fails to comply with his or her obligation in connection with the Tax-Related Items.

14.      Amendments.    Unless otherwise provided in the Plan or this Grant Agreement, this Grant Agreement may be amended only by a written agreement executed by the Company

8

and the Grantee.

15.      Integrated Agreement.    Any grant notice, this Grant Agreement and the Plan shall constitute the entire understanding and agreement of the Grantee and the Company with respect to the subject matter contained herein or therein and supersedes any prior agreements, understandings, restrictions, representations, or warranties between the Grantee and the Company with respect to such subject matter other than those as set forth or provided for herein or therein. To the extent contemplated herein or therein, the provisions of any grant notice and this Grant Agreement shall survive any settlement of the Award and shall remain in full force and effect.

16.      Severability.    If one or more of the provisions of this Grant Agreement shall be held invalid, illegal or unenforceable in any respect, the validity, legality and enforceability of the remaining provisions shall not in any way be affected or impaired thereby and the invalid, illegal or unenforceable provisions shall be deemed null and void; however, to the extent permissible by law, any provisions which could be deemed null and void shall first be construed, interpreted or revised retroactively to permit this Grant Agreement to be construed so as to foster the intent of this Grant Agreement and the Plan.

17.      Counterparts.    Any grant notice and this Grant Agreement may be executed in counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument.

18.      Governing Law and Venue.    This Grant Agreement shall be interpreted and administered under the laws of the State of Delaware. For purposes of litigating any dispute that arises under this grant or this Award, the parties hereby submit to and consent to the jurisdiction of the State of Arizona, agree that such litigation shall be conducted in the courts of Maricopa County, Arizona, or the federal courts for the United States for the District of Arizona, where this grant is made and/or to be performed.

19.      Other.    The Grantee represents that the Grantee has read and is familiar with the provisions of the Plan and this Grant Agreement, and hereby accepts the Award subject to all of their terms and conditions.

20.      Section 409A Compliance.    The Company believes, but does not and cannot warrant or guaranty, that the payments due pursuant to this Grant Agreement qualify for the short-term deferral exception to Section 409A of the Code as set forth in Treasury Regulation Section 1.409A-1(b)(4). Notwithstanding anything to the contrary in this Grant Agreement, if the Company determines that neither the short-term deferral exception nor any other exception to Section 409A applies to the payments due pursuant to this Grant Agreement, to the extent any payments are due on the Grantee’s termination of employment, the term “termination of employment” shall mean “separation from service” as defined in Treasury Regulation Section 1.409A-1(h). In addition, if Grantee is a “specified employee” (as defined in Treasury Regulation Section 1.409A-1(i)) and any payments due pursuant to this Award Agreement are payable on the Grantee’s “separation from service,” then such payments shall be paid on the first business day following the expiration of the six month period following the Grantee’s “separation from service.” This Grant Agreement shall be operated in compliance with Section

9

409A or an exception thereto and each provision of this Grant Agreement shall be interpreted, to the extent possible, to comply with Section 409A or to qualify for an applicable exception. The Grantee remains solely responsible for any adverse tax consequences imposed upon the Grantee by Section 409A.

21.      Confidentiality.    The Grantee acknowledges and agrees that the terms of this Award Agreement are considered proprietary information of the Company. The Grantee hereby agrees that Grantee shall maintain the confidentiality of these matters to the fullest extent permitted by law and shall not disclose them to any third party. If the Grantee violates this confidentiality provision, without waiving any other remedy available, the Company may revoke this Award without further obligation or liability, and the Grantee may be subject to disciplinary action, up to and including the Company’s termination of the Grantee’s employment for Cause.

22.      Appendix.    Notwithstanding any provisions in this Grant Agreement, the grant of the Units shall be subject to any special terms and conditions set forth in any appendix (or any appendices) to this Grant Agreement for the Grantee’s country (the “Appendix”). Moreover, if the Grantee relocates to one of the countries included in the Appendix, the special terms and conditions for such country will apply to the Grantee, to the extent the Company determines that the application of such terms and conditions is necessary or advisable in order to comply with local law or facilitate the administration of the Plan. The Appendix constitutes part of this Grant Agreement.

23.      Imposition of Other Requirements.    The Company reserves the right to impose other requirements on the Grantee’s participation in the Plan, on the Units and on any shares of Stock acquired under the Plan, to the extent the Company determines it is necessary or advisable in order to comply with local law or facilitate the administration of the Plan, and to require the Grantee to sign any additional agreements or undertakings that may be necessary to accomplish the foregoing.

IN WITNESS WHEREOF, the Company has caused this Grant Agreement to be signed by its duly authorized representative and the Grantee has signed this Grant Agreement as of the date first written above.

ON SEMICONDUCTOR CORPORATION
By:
	[NAME OF OFFICER]
GRANTEE
By:
	[NAME OF GRANTEE]

10

EX-31.1

Exhibit 31.1

CERTIFICATIONS

I, Keith D. Jackson, certify that:

1. I have reviewed this quarterly report on Form 10-Q of ON Semiconductor Corporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 3, 2012	/s/ KEITH D. JACKSON
	Keith D. Jackson
	Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATIONS

I, Donald A. Colvin, certify that:

1. I have reviewed this quarterly report on Form 10-Q of ON Semiconductor Corporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 3, 2012	/s/ DONALD A. COLVIN
	Donald A. Colvin
	Chief Financial Officer

EX-32.1

Exhibit 32.1

Certification

Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906

of the Sarbanes-Oxley Act of 2002

For purposes of Section 1350 of Chapter 63 of Title 18 of the United States Code, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, each of the undersigned officers of ON Semiconductor Corporation, a Delaware corporation (“Company”), does hereby certify, to such officer’s knowledge, that:

The Quarterly Report on Form 10-Q for the fiscal quarter ended March 30, 2012 (“Form 10-Q”) of the Company fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and the information contained in the Form10-Q fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: May 3, 2012	/s/ KEITH D. JACKSON
	Keith D. Jackson
	President and Chief Executive Officer

Dated: May 3, 2012	/s/ DONALD A. COLVIN
	Donald A. Colvin
	Executive Vice President and
	Chief Financial Officer

XML

Goodwill And Intangible Assets (Summary Of Amortization Expense) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2012
Goodwill And Intangible Assets [Abstract]
Remainder of 2012	$ 33.3
2013	39.7
2014	38.5
2015	37.4
2016	34.4
Thereafter	142.5
Total estimated amortization expense	$ 325.8

XML

Share-Based Compensation (Weighted-Average Assumptions Of Employee Stock Options) (Details) (Employee Stock Options [Member])	3 Months Ended
	Mar. 30, 2012 Y	Apr. 01, 2011 Y
Employee Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Volatility	46.70%	41.00%
Risk-free interest rate	0.90%	2.10%
Expected term	4.8	4.9

XML

Long-Term Debt (Long-Term Debt) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2012		Apr. 16, 2012	Dec. 31, 2011
Debt Instrument [Line Items]
Long-term debt, including current maturities	$ 1,189.0			$ 1,207.0
Less: Current maturities	(377.1)			(370.1)
Long-term debt	811.9			836.9
Senior Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity	325.0
Loan With A Japanese Company Due 2012 Through 2018, Interest Payable Quarterly At 2.33% [Member]
Debt Instrument [Line Items]
Long-term debt, including current maturities	330.3	[1]		339.8	[1]
Debt instrument, interest rate	2.22%			2.33%
Debt instrument maturity year, start	2012
Debt instrument maturity year, end	2018
Zero Coupon Convertible Senior Subordinated Notes Due 2024 [Member]
Debt Instrument [Line Items]
Long-term debt, including current maturities	95.9	[2]		94.2	[2]
Debt instrument, maturity year	2024
Debt instrument, interest rate	0.00%		0.00%
Debt instrument, discount	0.3			2.0
1.875% Convertible Senior Subordinated Notes Due 2025 [Member]
Debt Instrument [Line Items]
Long-term debt, including current maturities	90.1	[3]		88.4	[3]
Debt instrument, maturity year	2025
Debt instrument, interest rate	1.875%
Debt instrument, discount	4.9			6.6
2.625% Convertible Senior Subordinated Notes Due 2026 [Member]
Debt Instrument [Line Items]
Long-term debt, including current maturities	210.8	[4]		207.9	[4]
Debt instrument, maturity year	2026
Debt instrument, interest rate	2.625%
Debt instrument, discount	21.6			24.5
2.625% Convertible Senior Subordinated Notes Due 2026, Series B [Member]
Debt Instrument [Line Items]
Long-term debt, including current maturities	177.5	[5]		176.6	[5]
Debt instrument, maturity year	2026
Debt instrument, interest rate	2.625%
Debt instrument, discount	21.1			22.0
Loan With Hong Kong Bank, Interest Payable Weekly [Member]
Debt Instrument [Line Items]
Long-term debt, including current maturities	40.0			40.0
Debt instrument, interest rate	1.99%			2.04%
Loans With Philippine Banks Due 2012 Through 2015, Interest Payable Monthly And Quarterly At An Average Rate Of 2.01% And 1.80% [Member]
Debt Instrument [Line Items]
Long-term debt, including current maturities	65.5			68.2
Debt instrument, interest rate	2.01%			2.01%
Debt instrument maturity year, start	2012
Debt instrument maturity year, end	2015
Loans With Chinese Banks Due 2013, Interest Payable Quarterly [Member]
Debt Instrument [Line Items]
Long-term debt, including current maturities	7.0			7.0
Debt instrument, maturity year	2013
Debt instrument, interest rate	4.33%			4.44%
Loans With Japanese Banks Due Through 2013, Interest Payable Monthly And Semi-Annually [Member]
Debt Instrument [Line Items]
Long-term debt, including current maturities	3.1			3.5
Debt instrument, interest rate	1.72%			1.71%
Debt instrument maturity year, end	2013
Loan With Singapore Bank, Interest Payable Weekly [Member]
Debt Instrument [Line Items]
Long-term debt, including current maturities	27.0			25.0
Debt instrument, interest rate	1.97%			1.97%
Loan With British Finance Company, Interest Payable Monthly [Member]
Debt Instrument [Line Items]
Long-term debt, including current maturities	10.9			13.1
Debt instrument, interest rate	1.95%			2.42%
U.S. Real Estate Mortgages Payable Monthly Through 2016 At An Average Rate Of 4.86% [Member]
Debt Instrument [Line Items]
Long-term debt, including current maturities	31.2			31.6
Debt instrument, maturity year	2016
Debt instrument, interest rate	4.857%
U.S. Equipment Financing Payable Monthly Through 2015 At 3.23% [Member]
Debt Instrument [Line Items]
Long-term debt, including current maturities	10.1			10.8
Debt instrument, maturity year	2015
Debt instrument, interest rate	3.23%
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Long-term debt, including current maturities	$ 89.6			$ 100.9

[1] This loan represents Semiconductor Component Industries, LLC ("SCI LLC") unsecured loan with SANYO Electric, which is guaranteed by the Company.

[2] The Zero Coupon Convertible Senior Subordinated Notes due 2024 may be put back to the Company at the option of the holders of the notes on April 15 of 2012, 2014 and 2019 or called at the option of the Company on or after April 15, 2012. See Note 15: "Subsequent Events" of this Form 10-Q for the discussion of the retirement of the Zero Coupon Convertible Senior Subordinated Notes due 2024.

[3] The 1.875% Convertible Senior Subordinated Notes due 2025 may be put back to the Company at the option of the holders of the notes on December 15 of 2012, 2015 and 2020 or called at the option of the Company on or after December 20, 2012.

[4] The 2.625% Convertible Senior Subordinated Notes due 2026 may be put back to the Company at the option of the holders of the notes on December 15 of 2013, 2016 and 2021 or called at the option of the Company on or after December 20, 2013.

[5] The 2.625% Convertible Senior Subordinated Notes due 2026, Series B may be put back to the Company at the option of the holders of the notes on December 15 of 2016 and 2021 or called at the option of the Company on or after December 20, 2016.

XML

Segment Information (Summary Of Property, Plant And Equipment By Geographic Location) (Details) (USD $) In Millions, unless otherwise specified	Mar. 30, 2012	Dec. 31, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	$ 1,155.5	$ 1,109.5
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	261.0	257.5
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	94.5	96.7
Other Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	129.0	117.9
Malaysia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	172.6	164.5
Other Asia/Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	82.4	56.2
Japan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	125.3	130.2
Belgium [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	68.4	70.0
Other Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	12.7	12.5
Philippines [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	$ 209.6	$ 204.0

XML

Share-Based Compensation (Summary Of Stock Option Plans) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 30, 2012 Y
Share-Based Compensation [Abstract]
Number of Shares, Outstanding at December 31, 2011	18.7
Weighted-Average Exercise Price, Outstanding at December 31, 2011	$ 7.70
Number of Shares, Granted	1.4
Weighted-Average Exercise Price, Granted	$ 8.40
Number of Shares, Exercised	(0.9)
Weighted-Average Exercise Price, Exercised	$ 4.99
Number of Shares, Cancelled	(0.2)
Weighted-Average Exercise Price, Cancelled	$ 7.63
Number of Shares, Outstanding at March 30, 2012	19.0
Weighted-Average Exercise Price, Outstanding at March 30, 2012	$ 7.88
Weighted Average Remaining Contractual Term (in years), Outstanding at March 30, 2012	4.6
Aggregate Intrinsic Value, Outstanding at December 31, 2011	$ 29.8
Number of Shares, Exercisable at March 30, 2012	14.8
Weighted-Average Exercise Price, Exercisable at March 30, 2012	$ 7.84
Weighted-Average Remaining Contractual Term (in years), Exercisable at March 30, 2012	4.1
Aggregate Intrinsic Value (In-The-Money), Exercisable at March 30, 2012	$ 25.2

XML

Balance Sheet Information (Summary Of Net Periodic Pension Cost) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2012	Apr. 01, 2011
Balance Sheet Information [Abstract]
Service cost	$ 2.2	$ 2.3
Interest cost	1.3	1.3
Expected return on plan assets	(1.0)	(1.0)
Amortization of prior service cost	0.1	0.1
Total net periodic pension cost	$ 2.6	$ 2.7

XML

Guarantor and Non-Guarantor Statements (Tables)

3 Months Ended

Mar. 30, 2012

Guarantor And Non-Guarantor Statements [Abstract]

Notes To Consolidated Statement Of Balance Sheet

	Issuer			Guarantor
	ON Semiconductor Corporation (1)			SCI LLC			Other Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Total
As of March 30, 2012
Cash and cash equivalents	$	—		$	232.7		$	(0.9	)	$	348.3		$	—		$	580.1
Short-term investments		—			312.2			—			—			—			312.2
Receivables, net		—			56.9			—			368.4			—			425.3
Inventories		—			35.8			—			605.5			(7.6	)		633.7
Other current assets		—			9.9			—			66.9			—			76.8
Deferred income taxes, net of allowances		—			5.5			—			4.8			—			10.3
Total current assets		—			653.0			(0.9	)		1,393.9			(7.6	)		2,038.4
Property, plant and equipment, net		—			258.3			2.7			897.3			(2.8	)		1,155.5
Deferred income taxes, net of allowances		—			—			—			30.1			—			30.1
Goodwill		—			125.7			37.3			35.7			—			198.7
Intangible assets, net		—			147.8			—			207.1			(29.1	)		325.8
Investments and other assets		2,086.9			1,341.2			61.0			852.9			(4,261.3	)		80.7
Total assets	$	2,086.9		$	2,526.0		$	100.1		$	3,417.0		$	(4,300.8	)	$	3,829.2
Accounts payable	$	—		$	31.3		$	—		$	377.3		$	—		$	408.6
Accrued expenses		—			56.8			0.8			179.2			1.7			238.5
Income taxes payable		—			(8.4	)		—			11.2			—			2.8
Accrued interest		3.8			0.2			—			0.2			—			4.2
Deferred income on sales to distributors		—			39.7			—			113.8			—			153.5
Deferred income taxes, net of allowances		—			—			—			29.6			—			29.6
Current portion of long-term debt		186.0			70.9			—			120.2			—			377.1
Total current liabilities		189.8			190.5			0.8			831.5			1.7			1,214.3
Long-term debt		388.4			375.3			—			48.2			—			811.9
Other long-term liabilities		—			25.8			0.4			221.2			—			247.4
Deferred income taxes, net of allowances		—			5.5			—			15.6			—			21.1
Intercompany		0.3			(303.2	)		(51.5	)		148.9			205.5			—
Total liabilities		578.5			293.9			(50.3	)		1,265.4			207.2			2,294.7
Common stock		5.1			0.3			50.9			147.2			(198.4	)		5.1
Additional paid-in capital		3,125.6			2,716.6			238.4			1,359.5			(4,314.5	)		3,125.6
Accumulated other comprehensive loss		(41.6	)		(41.6	)		—			(34.5	)		76.1			(41.6	)
Accumulated deficit		(1,174.1	)		(443.2	)		(138.9	)		679.4			(97.3	)		(1,174.1	)
Less: treasury stock, at cost		(406.6	)		—			—			—			—			(406.6	)
Total ON Semiconductor Corporation stockholders' equity (deficit)		1,508.4			2,232.1			150.4			2,151.6			(4,534.1	)		1,508.4
Minority interests in consolidated subsidiaries		—			—			—			—			26.1			26.1
Total equity		1,508.4			2,232.1			150.4			2,151.6			(4,508.0	)		1,534.5
Total liabilities and equity	$	2,086.9		$	2,526.0		$	100.1		$	3,417.0		$	(4,300.8	)	$	3,829.2

	Issuer			Guarantor
	ON Semiconductor Corporation (1)			SCI LLC			Other Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Total
As of December 31, 2011
Cash and cash equivalents	$	—			304.5			(0.2	)	$	348.6			—		$	652.9
Short-term investments		—			248.6			—			—			—			248.6
Receivables, net		—			64.7			—			392.5			—			457.2
Inventories		—			36.2			—			599.3			1.9			637.4
Other current assets		—			7.5			—			114.1			—			121.6
Deferred income taxes, net of allowances		—			5.5			—			4.5			—			10.0
Total current assets		—			667.0			(0.2	)		1,459.0			1.9			2,127.7
Property, plant and equipment, net		—			255.2			2.3			854.5			(2.5	)		1,109.5
Deferred income taxes, net of allowances		—			—			—			34.2			—			34.2
Goodwill		—			125.7			37.3			35.7			—			198.7
Intangible assets, net		—			152.3						215.0			(30.1	)		337.2
Investments and other assets		2,036.2			1,303.5			59.1			846.9			(4,169.5	)		76.2
Total assets	$	2,036.2		$	2,503.7		$	98.5		$	3,445.3		$	(4,200.2	)	$	3,883.5
Accounts payable	$	—		$	32.8			0.1			418.9			—		$	451.8
Accrued expenses		—			61.0			0.8			176.3			1.7			239.8
Income taxes payable		—			(0.1	)		—			7.6			—			7.5
Accrued interest		0.6			—			—			0.1			—			0.7
Deferred income on sales to distributors		—			43.7			—			128.3			—			172.0
Deferred income taxes, net of allowances		—			—			—			33.6			—			33.6
Current portion of long-term debt		182.6			74.1			—			113.4			—			370.1
Total current liabilities		183.2			211.5			0.9			878.2			1.7			1,275.5
Long-term debt		384.5			393.8			—			58.6			—			836.9
Other long-term liabilities		—			26.6			0.4			233.1			—			260.1
Deferred income tax, net of allowances		—			5.5			—			12.0			—			17.5
Intercompany		0.3			(318.2	)		(54.5	)		166.9			205.5			—
Total liabilities		568.0			319.2			(53.2	)		1,348.8			207.2			2,390.0
Common stock		5.0			0.3			50.9			146.9			(198.1	)		5.0
Additional paid-in capital		3,113.5			2,711.2			238.4			1,359.2			(4,308.8	)		3,113.5
Accumulated other comprehensive loss		(46.7	)		(46.7	)		—			(39.2	)		85.9			(46.7	)
Accumulated deficit		(1,202.3	)		(480.3	)		(137.6	)		629.6			(11.7	)		(1,202.3	)
Less: treasury stock, at cost		(401.3	)		—			—			—			—			(401.3	)
Total ON Semiconductor Corporation stockholders' equity (deficit)		1,468.2			2,184.5			151.7			2,096.5			(4,432.7	)		1,468.2
Minority interests in consolidated subsidiaries		—			—			—			—			25.3			25.3
Total equity		1,468.2			2,184.5			151.7			2,096.5			(4,407.4	)		1,493.5
Total liabilities and equity	$	2,036.2		$	2,503.7		$	98.5		$	3,445.3		$	(4,200.2	)	$	3,883.5

Notes To Consolidated Statement Of Operations And Cash Flow

	Issuer			Guarantor Subsidiaries
	ON Semiconductor Corporation (1)			SCI LLC			Other Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Total
For the quarter ended March 30, 2012
Revenues	$	—		$	185.6		$	—		$	893.5		$	(334.7	)	$	744.4
Cost of product revenues		—			116.1			0.2			708.1			(325.2	)		499.2
Gross profit		—			69.5			(0.2	)		185.4			(9.5	)		245.2
Research and development		—			43.2			2.6			45.6			—			91.4
Selling and marketing		—			17.1			0.2			28.3			—			45.6
General and administrative		—			15.2			0.2			26.6			—			42.0
Amortization of acquisition related intangible assets		—			4.5			—			7.6			(1.0	)		11.1
Restructuring, asset impairments and other, net		—			—			—			11.5			—			11.5
Total operating expenses		—			80.0			3.0			119.6			(1.0	)		201.6
Operating income (loss)		—			(10.5	)		(3.2	)		65.8			(8.5	)		43.6
Interest expense		(10.9	)		(2.3	)		—			(2.5	)		—			(15.7	)
Interest income		—			0.3			—			0.2			—			0.5
Other		—			6.2			—			(1.5	)		—			4.7
Equity in earnings		39.1			34.9			1.9			—			(75.9	)		—
Income (loss) before income taxes		28.2			28.6			(1.3	)		62.0			(84.4	)		33.1
Income tax provision		—			8.5			—			(12.6	)		—			(4.1	)
Net income (loss)		28.2			37.1			(1.3	)		49.4			(84.4	)		29.0
Net income attributable to minority interest		—			—			—			—			(0.8	)		(0.8	)
Net income (loss) attributable to ON Semiconductor Corporation	$	28.2		$	37.1		$	(1.3	)	$	49.4		$	(85.2	)	$	28.2
Comprehensive income:
Net income	$	28.2		$	37.1		$	(1.3	)	$	49.4		$	(84.4	)	$	29.0
Foreign currency translation adjustments		4.9			0.8			—			4.1			(4.9	)		4.9
Effects of cash flow hedges		(0.4	)		(0.4	)		—			—			0.4			(0.4	)
Unrealized gain on available-for-sale securities		0.5			—			—			0.5			(0.5	)		0.5
Amortization of prior service costs of defined benefit plan		0.1			—			—			0.1			(0.1	)		0.1
Comprehensive income		33.3			37.5			(1.3	)		54.1			(89.5	)		34.1
Comprehensive income attributable to minority interest		—			—			—			—			(0.8	)	$	(0.8	)
Comprehensive income attributable to ON Semiconductor Corporation:	$	33.3		$	37.5		$	(1.3	)	$	54.1		$	(90.3	)	$	33.3
Net cash (used in) provided by operating activities	$	—		$	(31.3	)	$	(0.2	)	$	99.9		$	—		$	68.4
Cash flows from investing activities:
Purchases of property, plant and equipment		—			(11.2	)		(0.5	)		(38.7	)		—			(50.4	)
Proceeds from sales of property, plant and equipment		—			—			—			1.9			—			1.9
Deposits utilized for purchases of property, plant and equipment		—			—			—			(9.6	)		—			(9.6	)
Recovery from insurance on property, plant and equipment		—			—			—			11.5			—			11.5
Proceeds from held-to-maturity securities		—			99.7			—			—			—			99.7
Purchase of held-to-maturity securities		—			(163.3	)		—			—			—			(163.3	)
Net cash used in investing activities		—			(74.8	)		(0.5	)		(34.9	)		—			(110.2	)
Cash flows from financing activities:
Intercompany loans		—			(23.3	)		—			23.3			—			—
Intercompany loan repayments		—			70.2			—			(70.2	)		—			—
Proceeds from debt issuance		—			—			—			2.0			—			2.0
Proceeds from exercise of stock options		—			4.8			—			—						4.8
Payment of capital lease obligation		—			(11.0	)		—			(0.4	)					(11.4	)
Purchase of treasury stock		—			(5.3	)		—			—			—			(5.3	)
Repayment of long term debt		—			(1.1	)		—			(14.5	)		—			(15.6	)
Net cash provided by (used in) financing activities		—			34.3			—			(59.8	)		—			(25.5	)
Effect of exchange rate changes on cash and cash equivalents											(5.5	)					(5.5	)
Net increase (decrease) in cash and cash equivalents		—			(71.8	)		(0.7	)		(0.3	)		—			(72.8	)
Cash and cash equivalents, beginning of period		—			304.5			(0.2	)		348.6						652.9
Cash and cash equivalents, end of period	$	—		$	232.7		$	(0.9	)	$	348.3		$	—		$	580.1

	Issuers			Guarantor Subsidiaries
	ON Semiconductor Corporation (1)			SCI LLC			Other Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Total
For the quarter ended April 1, 2011
Revenues	$	—		$	208.6		$	—		$	1,003.1		$	(341.1	)	$	870.6
Cost of product revenues		—			154.9			0.3			805.9			(332.9	)		628.2
Gross profit		—			53.7			(0.3	)		197.2			(8.2	)		242.4
Research and development		—			59.3			3.0			28.8			—			91.1
Selling and marketing		—			21.4			0.3			27.7			—			49.4
General and administrative		—			27.4			0.2			19.5			—			47.1
Amortization of acquisition related intangible assets		—			4.4			—			6.3			(1.0	)		9.7
Restructuring, asset impairments and other, net		—			—			—			12.4			—			12.4
Total operating expenses		—			112.5			3.5			94.7			(1.0	)		209.7
Operating income (loss)		—			(58.8	)		(3.8	)		102.5			(7.2	)		32.7
Interest expense		(12.9	)		(2.2	)		—			(2.7	)		—			(17.8	)
Interest income		—			0.1			—			0.2			—			0.3
Other		—			4.1			—			(6.6	)		—			(2.5	)
Gain (loss) on SANYO Semiconductor acquisition		—			24.3			—			—			—			24.3
Loss on debt repurchase		—			—			—			—			—			—
Equity in earnings		48.4			42.6			1.7			—			(92.7	)		—
Income (loss) before income taxes		35.5			10.1			(2.1	)		93.4			(99.9	)		37.0
Income tax provision		—			12.2			—			(13.0	)		—			(0.8	)
Net income (loss)		35.5			22.3			(2.1	)		80.4			(99.9	)		36.2
Net income (loss) attributable to minority interest		—			—			—			—			(0.7	)		(0.7	)
Net income (loss) attributable to ON Semiconductor Corporation	$	35.5		$	22.3		$	(2.1	)	$	80.4		$	(100.6	)	$	35.5
Comprehensive income (loss):
Net income (loss)	$	35.5		$	22.3		$	(2.1	)	$	80.4		$	(99.9	)	$	36.2
Foreign currency translation adjustments		0.4			0.4			—			—			(0.4	)		0.4
Comprehensive income		35.9			22.7			(2.1	)		80.4			(100.3	)		36.6
Comprehensive income attributable to minority interests		—			—			—			—			(0.7	)		(0.7	)
Comprehensive income (loss) attributable to ON Semiconductor Corporation	$	35.9		$	22.7		$	(2.1	)	$	80.4		$	(101.0	)	$	35.9
Net cash provided by operating activities	$	—		$	69.3		$	(0.1	)	$	56.4		$	—		$	125.6
Cash flows from investing activities:
Purchases of property, plant and equipment		—			(20.9	)		(0.1	)		(67.7	)		—			(88.7	)
Purchase of a business, net of cash acquired		—			53.0			—			(110.6	)		—			(57.6	)
Purchase of restricted cash		—			142.1			—			—			—			142.1
Net cash used in investing activities		—			174.2			(0.1	)		(178.3	)		—			(4.2	)
Cash flows from financing activities:
Intercompany loans		—			(375.1	)		—			375.1			—			—
Intercompany loan repayments		—			144.8			—			(144.8	)		—			—
Proceeds from issuance of common stock under the employee stock purchase plan		—			1.9			—			—			—			1.9
Proceeds from debt issuance		—			—			—			15.2			—			15.2
Proceeds from exercise of stock options		—			41.1			—			—			—			41.1
Payment of capital lease obligation		—			(10.0	)		—			0.1			—			(9.9	)
Purchase of treasury stock		—			(7.6	)		—			—			—			(7.6	)
Repayment of long term debt		—			(0.3	)					(19.3	)		—			(19.6	)
Net cash used in financing activities		—			(205.2	)		—			226.3			—			21.1
Effect of exchange rate changes on cash and cash equivalents		—			—			—			0.2			—			0.2
Net increase (decrease) in cash and cash equivalents		—			38.3			(0.2	)		104.6			—			142.7
Cash and cash equivalents, beginning of period		—			392.3			—			231.0			—			623.3
Cash and cash equivalents, end of period	$	—		$	430.6		$	(0.2	)	$	335.6		$	—			766.0

(1) ON Semiconductor is a holding company and has no operations apart from those of its operating subsidiaries. Additionally, ON Semiconductor does not maintain a bank account; rather SCI LLC, its primary domestic operating subsidiary, processes all of its cash receipts and disbursements on its behalf.

XML

Subsequent Events (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2012	Apr. 16, 2012
Zero Coupon Convertible Senior Subordinated Notes Due 2024 [Member]
Subsequent Event [Line Items]
Debt instrument, interest rate	0.00%	0.00%
Debt instrument, maturity year	2024
Gross principal amount paid to note holders		$ 96.2
Restructuring Activities Related To The 2011 SANYO Semiconductor Acquisition [Member]
Subsequent Event [Line Items]
Expected reduction in employment levels	500
Maximum [Member] | Restructuring Activities Related To The 2011 SANYO Semiconductor Acquisition [Member]
Subsequent Event [Line Items]
Estimated additional voluntary retirement charges	50.0
Minimum [Member] | Restructuring Activities Related To The 2011 SANYO Semiconductor Acquisition [Member]
Subsequent Event [Line Items]
Estimated additional voluntary retirement charges	40.0

XML

Share-Based Compensation (Summary Of Restricted Stock Units Transactions) (Details) (Restricted Stock Units [Member], USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 30, 2012
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested shares of restricted stock units at December 31, 2011	9.6
Number of Shares, Granted	3.1
Number of Shares, Released	(2.0)
Number of Shares, Forfeited	(0.1)
Nonvested shares of restricted stock units at December 31, 2011	10.6
Weighted Average Grant Date Fair Value, Nonvested shares of restricted stock units at December 31, 2010	$ 7.95
Weighted Average Grant Date Fair Value, Granted	$ 8.40
Weighted Average Grant Date Fair Value, Released	$ 5.75
Weighted Average Grant Date Fair Value, Forfeited	$ 8.69
Weighted Average Grant Date Fair Value, Nonvested shares of restricted stock units at March 30, 2012	$ 8.49

XML

Guarantor And Non-Guarantor Statements (Notes To Consolidated Statement Of Balance Sheet) (Details) (USD $) In Millions, unless otherwise specified	Mar. 30, 2012		Dec. 31, 2011		Apr. 01, 2011	Dec. 31, 2010
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	$ 580.1		$ 652.9		$ 766.0	$ 623.3
Short-term investments	312.2		248.6
Receivables, net	425.3		457.2
Inventories	633.7		637.4
Other current assets	76.8		121.6
Deferred income taxes, net of allowances	10.3		10.0
Total current assets	2,038.4		2,127.7
Property, plant and equipment, net	1,155.5		1,109.5
Deferred income taxes, net of allowances	30.1		34.2
Goodwill	198.7		198.7
Intangible assets, net	325.8		337.2
Investments and other assets	80.7		76.2
Total assets	3,829.2		3,883.5
Accounts payable	408.6		451.8
Accrued expenses	238.5		239.8
Income taxes payable	2.8		7.5
Accrued interest	4.2		0.7
Deferred income on sales to distributors	153.5		172.0
Deferred income taxes, net of allowances	29.6		33.6
Current portion of long-term debt	377.1		370.1
Total current liabilities	1,214.3		1,275.5
Long-term debt	811.9		836.9
Other long-term liabilities	247.4		260.1
Deferred income taxes, net of allowances	21.1		17.5
Total liabilities	2,294.7		2,390.0
Common stock	5.1		5.0
Additional paid-in capital	3,125.6		3,113.5
Accumulated other comprehensive loss	(41.6)		(46.7)
Accumulated deficit	(1,174.1)		(1,202.3)
Less: treasury stock, at cost	(406.6)		(401.3)
Total ON Semiconductor Corporation stockholders' equity	1,508.4		1,468.2
Minority interest in consolidated subsidiaries	26.1		25.3		22.7	22.0
Total equity	1,534.5		1,493.5
Total liabilities and equity	3,829.2		3,883.5
Issuer [Member]
Condensed Financial Statements, Captions [Line Items]
Investments and other assets	2,086.9	[1]	2,036.2	[1]
Total assets	2,086.9	[1]	2,036.2	[1]
Accrued interest	3.8	[1]	0.6	[1]
Current portion of long-term debt	186.0	[1]	182.6	[1]
Total current liabilities	189.8	[1]	183.2	[1]
Long-term debt	388.4	[1]	384.5	[1]
Intercompany	0.3	[1]	0.3	[1]
Total liabilities	578.5	[1]	568.0	[1]
Common stock	5.1	[1]	5.0	[1]
Additional paid-in capital	3,125.6	[1]	3,113.5	[1]
Accumulated other comprehensive loss	(41.6)	[1]	(46.7)	[1]
Accumulated deficit	(1,174.1)	[1]	(1,202.3)	[1]
Less: treasury stock, at cost	(406.6)	[1]	(401.3)	[1]
Total ON Semiconductor Corporation stockholders' equity	1,508.4	[1]	1,468.2	[1]
Total equity	1,508.4	[1]	1,468.2	[1]
Total liabilities and equity	2,086.9	[1]	2,036.2	[1]
SCI LLC [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	232.7		304.5		430.6	392.3
Short-term investments	312.2		248.6
Receivables, net	56.9		64.7
Inventories	35.8		36.2
Other current assets	9.9		7.5
Deferred income taxes, net of allowances	5.5		5.5
Total current assets	653.0		667.0
Property, plant and equipment, net	258.3		255.2
Goodwill	125.7		125.7
Intangible assets, net	147.8		152.3
Investments and other assets	1,341.2		1,303.5
Total assets	2,526.0		2,503.7
Accounts payable	31.3		32.8
Accrued expenses	56.8		61.0
Income taxes payable	(8.4)		(0.1)
Accrued interest	0.2
Deferred income on sales to distributors	39.7		43.7
Current portion of long-term debt	70.9		74.1
Total current liabilities	190.5		211.5
Long-term debt	375.3		393.8
Other long-term liabilities	25.8		26.6
Deferred income taxes, net of allowances	5.5		5.5
Intercompany	(303.2)		(318.2)
Total liabilities	293.9		319.2
Common stock	0.3		0.3
Additional paid-in capital	2,716.6		2,711.2
Accumulated other comprehensive loss	(41.6)		(46.7)
Accumulated deficit	(443.2)		(480.3)
Total ON Semiconductor Corporation stockholders' equity	2,232.1		2,184.5
Total equity	2,232.1		2,184.5
Total liabilities and equity	2,526.0		2,503.7
Other Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	(0.9)		(0.2)		(0.2)
Total current assets	(0.9)		(0.2)
Property, plant and equipment, net	2.7		2.3
Goodwill	37.3		37.3
Investments and other assets	61.0		59.1
Total assets	100.1		98.5
Accounts payable			0.1
Accrued expenses	0.8		0.8
Total current liabilities	0.8		0.9
Other long-term liabilities	0.4		0.4
Intercompany	(51.5)		(54.5)
Total liabilities	(50.3)		(53.2)
Common stock	50.9		50.9
Additional paid-in capital	238.4		238.4
Accumulated deficit	(138.9)		(137.6)
Total ON Semiconductor Corporation stockholders' equity	150.4		151.7
Total equity	150.4		151.7
Total liabilities and equity	100.1		98.5
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	348.3		348.6		335.6	231.0
Receivables, net	368.4		392.5
Inventories	605.5		599.3
Other current assets	66.9		114.1
Deferred income taxes, net of allowances	4.8		4.5
Total current assets	1,393.9		1,459.0
Property, plant and equipment, net	897.3		854.5
Deferred income taxes, net of allowances	30.1		34.2
Goodwill	35.7		35.7
Intangible assets, net	207.1		215.0
Investments and other assets	852.9		846.9
Total assets	3,417.0		3,445.3
Accounts payable	377.3		418.9
Accrued expenses	179.2		176.3
Income taxes payable	11.2		7.6
Accrued interest	0.2		0.1
Deferred income on sales to distributors	113.8		128.3
Deferred income taxes, net of allowances	29.6		33.6
Current portion of long-term debt	120.2		113.4
Total current liabilities	831.5		878.2
Long-term debt	48.2		58.6
Other long-term liabilities	221.2		233.1
Deferred income taxes, net of allowances	15.6		12.0
Intercompany	148.9		166.9
Total liabilities	1,265.4		1,348.8
Common stock	147.2		146.9
Additional paid-in capital	1,359.5		1,359.2
Accumulated other comprehensive loss	(34.5)		(39.2)
Accumulated deficit	679.4		629.6
Total ON Semiconductor Corporation stockholders' equity	2,151.6		2,096.5
Total equity	2,151.6		2,096.5
Total liabilities and equity	3,417.0		3,445.3
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Inventories	(7.6)		1.9
Total current assets	(7.6)		1.9
Property, plant and equipment, net	(2.8)		(2.5)
Intangible assets, net	(29.1)		(30.1)
Investments and other assets	(4,261.3)		(4,169.5)
Total assets	(4,300.8)		(4,200.2)
Accrued expenses	1.7		1.7
Total current liabilities	1.7		1.7
Intercompany	205.5		205.5
Total liabilities	207.2		207.2
Common stock	(198.4)		(198.1)
Additional paid-in capital	(4,314.5)		(4,308.8)
Accumulated other comprehensive loss	76.1		85.9
Accumulated deficit	(97.3)		(11.7)
Total ON Semiconductor Corporation stockholders' equity	(4,534.1)		(4,432.7)
Minority interest in consolidated subsidiaries	26.1		25.3
Total equity	(4,508.0)		(4,407.4)
Total liabilities and equity	$ (4,300.8)		$ (4,200.2)

[1] ON Semiconductor is a holding company and has no operations apart from those of its operating subsidiaries. Additionally, ON Semiconductor does not maintain a bank account; rather SCI LLC, its primary domestic operating subsidiary, processes all of its cash receipts and disbursements on its behalf.

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Long-Term Debt (Tables)

3 Months Ended

Mar. 30, 2012

Long-Term Debt [Abstract]

Long-Term Debt

	March 30, 2012			December 31, 2011
Senior Revolving Credit Facility (up to $325.0 million)	$	—		$	—
Loan with a Japanese company due 2012 through 2018, interest payable quarterly at 2.22% and 2.33%, respectively (1)		330.3			339.8
Zero Coupon Convertible Senior Subordinated Notes due 2024 (net of discount of $0.3 million and $2.0 million, respectively) (2)		95.9			94.2
1.875% Convertible Senior Subordinated Notes due 2025 (net of discount of $4.9 million and $6.6 million, respectively) (3)		90.1			88.4
2.625% Convertible Senior Subordinated Notes due 2026 (net of discount of $21.6 million and $24.5 million, respectively) (4)		210.8			207.9
2.625% Convertible Senior Subordinated Notes due 2026, Series B (net of discount of $21.1 million and $22.0 million, respectively) (5)		177.5			176.6
Loan with Hong Kong bank, interest payable weekly at 1.99% and 2.04%, respectively		40.0			40.0
Loans with Philippine banks due 2012 through 2015, interest payable monthly and quarterly at an average rate of 2.01% and 2.01%, respectively		65.5			68.2
Loans with Chinese bank due 2013, interest payable quarterly at 4.33% and 4.44%, respectively		7.0			7.0
Loans with Japanese banks due through 2013, interest payable monthly and semi-annually at an average rate of 1.72% and 1.71%, respectively		3.1			3.5
Loan with Singapore bank, interest payable weekly at 1.97% and 1.97%, respectively		27.0			25.0
Loan with British finance company, interest payable monthly at 1.95% and 2.42%, respectively		10.9			13.1
U.S. real estate mortgages payable monthly through 2016 at an average rate of 4.857%		31.2			31.6
U.S. equipment financing payable monthly through 2015 at 3.23%		10.1			10.8
Capital lease obligations		89.6			100.9
Long-term debt, including current maturities		1,189.0			1,207.0
Less: Current maturities		(377.1	)		(370.1	)
Long-term debt	$	811.9		$	836.9

(1) This loan represents Semiconductor Component Industries, LLC ("SCI LLC") unsecured loan with SANYO Electric, which is guaranteed by the Company.

(2) The Zero Coupon Convertible Senior Subordinated Notes due 2024 may be put back to the Company at the option of the holders of the notes on April 15 of 2012, 2014 and 2019 or called at the option of the Company on or after April 15, 2012. See Note 15: "Subsequent Events" of this Form 10-Q for the discussion of the retirement of the Zero Coupon Convertible Senior Subordinated Notes due 2024.

(3) The 1.875% Convertible Senior Subordinated Notes due 2025 may be put back to the Company at the option of the holders of the notes on December 15 of 2012, 2015 and 2020 or called at the option of the Company on or after December 20, 2012.

(4) The 2.625% Convertible Senior Subordinated Notes due 2026 may be put back to the Company at the option of the holders of the notes on December 15 of 2013, 2016 and 2021 or called at the option of the Company on or after December 20, 2013.

(5) The 2.625% Convertible Senior Subordinated Notes due 2026, Series B may be put back to the Company at the option of the holders of the notes on December 15 of 2016 and 2021 or called at the option of the Company on or after December 20, 2016.

Annual Maturities Relating To Long-Term Debt

	Expected Maturities
Remainder of 2012		353.7
2013		328.6
2014		75.3
2015		63.5
2016		262.2
Thereafter		153.6
Total	$	1,236.9

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Earnings Per Share And Equity (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended				3 Months Ended		3 Months Ended
	Mar. 30, 2012	Apr. 01, 2011	Dec. 31, 2011	Dec. 31, 2010	Mar. 30, 2012 Zero Coupon Convertible Senior Subordinated Notes Due 2024 [Member]	Apr. 16, 2012 Zero Coupon Convertible Senior Subordinated Notes Due 2024 [Member]	Mar. 30, 2012 2.625% Convertible Senior Subordinated Notes Due 2026 [Member]	Mar. 30, 2012 1.875% Convertible Senior Subordinated Notes Due 2025 [Member]
Earnings Per Share And Equity [Line Items]
Anti-dilutive shares	11,300,000	6,100,000
Debt instrument, maturity year					2024		2026	2025
Debt instrument, interest rate					0.00%	0.00%	2.625%	1.875%
Amounts remitted for applicable withholding taxes on underlying restricted stock units	$ 5.3
Common stock withheld underlying restricted stock units	591,174
Minority interests in consolidated subsidiaries	26.1	22.7	25.3	22.0
Net (income) loss attributable to minority interests	$ 0.8	$ 0.7

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Restructuring, Asset Impairments And Other, Net (Rollforward Of Accrued Restructuring Charges) (Details) (USD $) In Millions, unless otherwise specified			3 Months Ended
	Mar. 30, 2012	Dec. 31, 2011	Mar. 30, 2012 Estimated Employee Separation Charges [Member]	Mar. 30, 2012 Estimated Costs To Exit [Member]
Restructuring Cost and Reserve [Line Items]
Balance at Beginning of Period	$ 24.2	$ 17.3	$ 8.9	$ 8.4
Charges			7.3	2.4
Usage			(1.5)	(0.5)
Adjustments			(0.8)
Balance at End of Period	$ 24.2	$ 17.3	$ 13.9	$ 10.3

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Goodwill And Intangible Assets (Summary Of Goodwill By Operating Segment) (Details) (USD $) In Millions, unless otherwise specified	Mar. 30, 2012	Dec. 31, 2011
Goodwill [Line Items]
Original Goodwill	$ 623.4	$ 623.4
Accumulated Amortization	(9.8)	(9.8)
Accumulated Impairment Losses	(414.9)	(414.9)
Carrying Value	198.7	198.7
Automotive, Industrial, Medical And Mil-Aero [Member]
Goodwill [Line Items]
Original Goodwill	556.6	556.6
Accumulated Amortization	(4.2)	(4.2)
Accumulated Impairment Losses	(406.0)	(406.0)
Carrying Value	146.4	146.4
Computing & Consumer Products [Member]
Goodwill [Line Items]
Original Goodwill	29.1	29.1
Accumulated Amortization	(5.6)	(5.6)
Carrying Value	23.5	23.5
Standard Products [Member]
Goodwill [Line Items]
Original Goodwill	37.7	37.7
Accumulated Impairment Losses	(8.9)	(8.9)
Carrying Value	$ 28.8	$ 28.8

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Share-Based Compensation (Narrative) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended											3 Months Ended
	Mar. 30, 2012	Apr. 01, 2011	Mar. 30, 2012 Employee Stock Options [Member]	Apr. 01, 2011 Employee Stock Options [Member]	Mar. 30, 2012 Restricted Stock Units [Member]	Apr. 01, 2011 Restricted Stock Units [Member]	Mar. 30, 2012 Amended And Restated SIP [Member]	Dec. 31, 2011 Amended And Restated SIP [Member]	Mar. 30, 2012 Time-Based Restricted Stock Units [Member]	Mar. 30, 2012 Employee Stock Purchase Plan [Member]	Dec. 31, 2011 Employee Stock Purchase Plan [Member]	Mar. 30, 2012 Stock Options [Member]	Apr. 01, 2011 Stock Options [Member]	Mar. 30, 2012 Maximum [Member] Amended And Restated SIP [Member]	Mar. 30, 2012 Minimum [Member] Amended And Restated SIP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate of common stock available for grant							11.5	17.4
Vesting period of options														3 years	1 year
Unrecognized share-based compensation expense on non-vested stock options									$ 45.9			$ 10.0
Weighted-average fair value assumptions on stock options granted			$ 3.41	$ 4.22
Estimated pre-vesting forfeitures					4.00%	12.00%						11.00%	12.00%
Total Intrinsic value of stock options exercised	3.4
Cash received from exercise of stock options	$ 4.8	$ 41.1
Shares available for issuance										4.1	4.1

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Segment Information (Segment Information Of Revenues, Gross Profit And Operating Income) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2012	Apr. 01, 2011
Segment Reporting Information [Line Items]
Revenues from external customers	$ 744.4	$ 870.6
Segment gross profit	257.2	258.6
Segment operating income (loss)	67.1	71.7
Computing & Consumer Group [Member]
Segment Reporting Information [Line Items]
Revenues from external customers	138.3	155.7
Segment gross profit	52.5	63.7
Segment operating income (loss)	20.9	27.4
Automotive, Industrial, Medical And Mil-Aero [Member]
Segment Reporting Information [Line Items]
Revenues from external customers	203.4	208.7
Segment gross profit	91.3	104.3
Segment operating income (loss)	19.7	32.5
Standard Products Group [Member]
Segment Reporting Information [Line Items]
Revenues from external customers	196.8	228.1
Segment gross profit	73.5	86.2
Segment operating income (loss)	46.9	54.6
SANYO Semiconductor Products Group [Member]
Segment Reporting Information [Line Items]
Revenues from external customers	205.9	278.1
Segment gross profit	39.9	4.4
Segment operating income (loss)	$ (20.4)	$ (42.8)

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Fair Value Of Financial Instruments (Fair Value Of Assets And Liabilities Measured On Recurring Basis) (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Millions, unless otherwise specified	Mar. 30, 2012	Dec. 31, 2011
Estimate Of Fair Value, Fair Value Disclosure [Member] | Demand And Time Deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 431.0	$ 455.3
Estimate Of Fair Value, Fair Value Disclosure [Member] | Treasuries [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	92.6	131.1
Estimate Of Fair Value, Fair Value Disclosure [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	54.2	50.9
Estimate Of Fair Value, Fair Value Disclosure [Member] | Corporate Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	2.3	15.6
Estimate Of Fair Value, Fair Value Disclosure [Member] | Foreign Exchange Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Current Assets	0.4	0.7
Liabilities	0.2	0.1
Quoted Prices In Active Markets For Identical Assets(Level 1) [Member] | Demand And Time Deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	431.0	455.3
Quoted Prices In Active Markets For Identical Assets(Level 1) [Member] | Treasuries [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	92.6	131.1
Quoted Prices In Active Markets For Identical Assets(Level 1) [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	54.2	50.9
Quoted Prices In Active Markets For Identical Assets(Level 1) [Member] | Corporate Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	2.3	15.1
Quoted Prices In Active Markets For Identical Assets(Level 1) [Member] | Foreign Exchange Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Current Assets	0.4	0.7
Liabilities	$ 0.2	$ 0.1

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Long-Term Debt (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2012	Apr. 16, 2012
Debt Instrument [Line Items]
Principal payment	622.2
Zero Coupon Convertible Senior Subordinated Notes Due 2024 [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate	0.00%	0.00%
Debt instrument, maturity year	2024
1.875% Convertible Senior Subordinated Notes Due 2025 [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate	1.875%
Debt instrument, maturity year	2025
2.625% Convertible Senior Subordinated Notes Due 2026 [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate	2.625%
Debt instrument, maturity year	2026
2.625% Convertible Senior Subordinated Notes Due 2026, Series B [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate	2.625%
Debt instrument, maturity year	2026

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Restructuring, Asset Impairments And Other, Net

3 Months Ended

Mar. 30, 2012

Restructuring, Asset Impairments And Other, Net [Abstract]

Restructuring, Asset Impairments And Other, Net

Note 4: Restructuring, Asset Impairments and Other, Net

A summary description of the activity included in the "Restructuring, Asset Impairments and Other, Net" caption on the consolidated statement of comprehensive income for the quarter ended March 30, 2012 is as follows (in millions):

	Restructuring		Other		Total
Three months ended March 30, 2012
Thailand facility closure	$	1.5	$	1.8	$	3.3
Aizu facility closure		5.8		0.1		5.9
SANYO Semiconductor consolidation		—		2.3		2.3
Total	$	7.3	$	4.2	$	11.5

The following is a rollforward of the accrued restructuring charges from December 31, 2011 to March 30, 2012 (in millions):

	Balance as of December 31, 2011		Charges		Usage			Adjustments			Balance as of March 30, 2012
Estimated employee separation charges:	$	8.9	$	7.3	$	(1.5	)	$	(0.8	)	$	13.9
Estimated costs to exit:	$	8.4	$	2.4	$	(0.5	)	$	—		$	10.3

The activity related to the Company's restructuring, asset impairments and other, net for programs that were either initiated in 2012 or had not been completed as of March 30, 2012, are as follows:

Thailand Facility Closure

Cumulative charges of $15.2 million, net of adjustments, have been recognized through March 30, 2012, related to the 2011 announced plan to close our probe, assembly and test operations in Ayutthaya, Thailand and to partially close our Bang Pa In, Thailand facility as a result of the flooding in these regions. During the fourth quarter of 2011, a total of approximately 1,600 employees were asked to resign due to such closures. As of March 30, 2012, a total of 45 employees remained to be exited. For the quarter ended March 30, 2012, the Company recorded employee separation charges of approximately $1.5 million related to these terminations. Additionally, the Company recorded net other charges of $1.8 million, which represented $2.3 million of costs incurred associated with the closure and partial closure of these facilities, partially offset by $0.5 million of additional insurance proceeds. These charges have been included in restructuring, asset impairments and other, net on the consolidated statement of comprehensive income for the three months ended March 30, 2012.

The accrued liability associated with employee separation charges as of March 30, 2012 was $0.8 million.

Aizu Facility Closure

Cumulative charges of $75.9 million, net of adjustments, have been recognized through March 30, 2012, related to the announced closure of the Company's Aizu facility, for cost savings purposes. As of March 30, 2012, a total of 207 employees were notified that their employment with the Company would be terminated due to the closure of the Aizu facility. As of March 30, 2012, none of these employees had been exited. For the quarter ended March 30, 2012, the Company recognized restructuring charges of $5.8 million related to severance benefits for employees required to give further services prior to receiving these termination benefits. Additionally, the Company recorded $0.1 million of additional exit costs associated with this closure. These charges have been included in restructuring, asset impairments and other, net on the consolidated statement of comprehensive income for the three months ended March 30, 2012.

The accrued liability associated with employee separation charges at the Aizu facility as of March 30, 2012 was $11.5 million. Additionally, the Company expects to incur additional employee separation charges of $2.8 million and $2.9 million of exit costs during the remainder of 2012 associated with this closure.

SANYO Semiconductor Consolidation

Cumulative charges of $12.3 million, net of adjustments, have been recognized through March 30, 2012, related to the 2011 announced plans to integrate and restructure the operations of SANYO Semiconductor and the Company, in part, for cost savings purposes. For the quarter ended March 30, 2012, the Company recorded an incremental $2.3 million of exit costs relating to the consolidation of factories. These charges have been included in restructuring, asset impairments and other, net on the consolidated statement of comprehensive income for the three months ended March 30, 2012.

2011 Global Workforce Reduction

Cumulative charges of $2.5 million, net of adjustments, have been recognized through March 30, 2012 related to the announced plans to reduce worldwide personnel for cost savings purposes. During the third quarter of 2011, a total of 42 employees were notified that their employment with the Company would be terminated due to their positions being eliminated or consolidated in connection with this restructuring. As of the end of the first quarter of 2012, six of these employees still remained employed by the Company. We expect that all remaining notified individuals will be officially separated from the Company in the fourth quarter of 2012, with all related benefit payments being made in the same period. As of March 30, 2012, the Company had accrued $1.4 million for employee separation charges associated with this activity.

2011 Closure of the Phoenix, Arizona Wafer Manufacturing Facility

Cumulative charges of $4.3 million, have been recognized through March 30, 2012, related to the 2011 closure of the Phoenix, Arizona wafer manufacturing facility.

In the second quarter of 2011, the Company proceeded with its previously announced plans to close the Phoenix, Arizona wafer manufacturing facility for cost saving purposes. A total of 166 employees were notified that their employment with the Company would be terminated due to their positions being eliminated or consolidated in connection with this restructuring. As of March 30, 2012, 10 of these employees remained employed by the Company. The Company had $0.1 million accrued for employee separation charges for the remaining 10 employees who are expected to be separated by the end of the third quarter of 2012.

Acquisition of AMIS Holdings, Inc. ("AMIS")

The Company had $8.1 million of accrued liabilities for estimated costs to exit certain activities of AMIS which was acquired in March 2008, of which $0.1 million were for employee separation costs and $8.0 million were for exit costs outstanding as of March 30, 2012. During the quarter ended March 30, 2012, the Company paid decommissioning costs resulting from the shutdown of a fabrication facility of $0.1 million. All payments related to these activities are expected to be completed by the end of the third quarter of fiscal 2012.

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Fair Value Of Financial Instruments (Carrying Amounts And Fair Values Of Long-Term Borrowings) (Details) (USD $) In Millions, unless otherwise specified	Mar. 30, 2012	Dec. 31, 2011
Convertible Notes Payable [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Amount	$ 574.3	$ 567.1
Fair Value	716.5	683.9
Long-term Debt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Amount	483.9	496.6
Fair Value	$ 453.3	$ 462.0

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Balance Sheet Information (Narrative) (Details) (USD $) In Millions, unless otherwise specified	Mar. 30, 2012	Dec. 31, 2011	Apr. 01, 2011
Balance Sheet Information [Line Items]
Accrued pension liability underfunded plans	$ 67.5	$ 83.3
Accrued pension liability accrued expenses	9.8	11.4
Pension asset overfunded plans	12.5	12.4
Foreign currency translation gains related to Aizu facility	(41.6)	(46.5)
Acquisition Of SANYO Semiconductor Co., Ltd. [Member]
Balance Sheet Information [Line Items]
Accrued pension liability accrued expenses	2.9		2.9
Defined benefit pension plan, liabilities	140.1	151.0
Restructuring Activities Related To 2011 Aizu Closure [Member]
Balance Sheet Information [Line Items]
Foreign currency translation gains related to Aizu facility	$ 18.9	$ 18.5

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Fair Value Of Financial Instruments (Tables)

3 Months Ended

Mar. 30, 2012

Fair Value Of Financial Instruments [Abstract]

Fair Value Of Assets And Liabilities Measured On Recurring Basis

	March 30, 2012		Quoted Prices in Active Markets (Level 1)		Balance as of December 31, 2011		Quoted Prices in Active Markets (Level 1)
Description
Assets:
Cash and cash equivalents:
Demand and time deposits	$	431.0	$	431.0	$	455.3	$	455.3
Treasuries		92.6		92.6		131.1		131.1
Commercial paper		54.2		54.2		50.9		50.9
Corporate bonds		2.3		2.3		15.6		15.1
Other Current Assets
Foreign currency exchange contracts	$	0.4	$	0.4	$	0.7	$	0.7
Liabilities:
Foreign currency exchange contracts	$	0.2	$	0.2	$	0.1	$	0.1

Carrying Amounts And Fair Values Of Long-Term Borrowings

	March 30, 2012				December 31, 2011
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Long-term debt, including current portion
Convertible Notes	$	574.3	$	716.5	$	567.1	$	683.9
Long-term debt	$	483.9	$	453.3	$	496.6	$	462.0

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Commitments And Contingencies (Tables)

3 Months Ended

Mar. 30, 2012

Commitments And Contingencies [Abstract]

Operating Leases Future Minimum Payments Receivable

Remainder of 2012		24.3
2013		20.6
2014		16.8
2015		14.1
2016		12.3
Thereafter		26.6
Total	$	114.7

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Share-Based Compensation (Additional Information On Stock Options Outstanding) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 30, 2012
Option Price Less Than Closing Price Of Common Stock At End Of Quarter [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Below $9.01	$ 9.01
Number of Shares, Exercisable	8.5
Weighted Average Exercise Price, Exercisable	$ 6.04
Number of Shares, Unexercisable	3.5
Weighted Average Exercise Price, Unexercisable	$ 7.74
Number of Shares, Total	12.0
Weighted Average Exercise Price, Total	$ 6.54
Option Price Above Closing Price Of Common Stock At End Of Quarter [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Above $9.10	$ 9.01
Number of Shares, Exercisable	6.3
Weighted Average Exercise Price, Exercisable	$ 10.28
Number of Shares, Unexercisable	0.7
Weighted Average Exercise Price, Unexercisable	$ 9.73
Number of Shares, Total	7.0
Weighted Average Exercise Price, Total	$ 10.22
Total Outstanding [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of Shares, Exercisable	14.8
Weighted Average Exercise Price, Exercisable	$ 7.84
Number of Shares, Unexercisable	4.2
Weighted Average Exercise Price, Unexercisable	$ 8.07
Number of Shares, Total	19.0
Weighted Average Exercise Price, Total	$ 7.88

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Balance Sheet Information (Supplemental Balance Sheet Information) (Details) (USD $) In Millions, unless otherwise specified	Mar. 30, 2012	Dec. 31, 2011
Receivables, net:
Accounts receivable	$ 431.6	$ 464.3
Less: Allowance for doubtful accounts	(6.3)	(7.1)
Accounts receivable, net	425.3	457.2
Inventories:
Raw materials	61.8	58.8
Work in process	414.2	430.8
Finished goods	157.7	147.8
Inventories, net	633.7	637.4
Property, plant and equipment, net:
Land	74.3	76.6
Buildings	537.7	539.3
Machinery and equipment	1,997.6	1,943.0
Total property, plant and equipment	2,609.6	2,558.9
Less: Accumulated depreciation	(1,454.1)	(1,449.4)
Property, plant and equipment, net	1,155.5	1,109.5
Accrued expenses:
Accrued payroll	127.9	125.2
Sales related reserves	53.8	45.5
Restructuring reserves	24.2	17.3
Accrued pension liability	9.8	11.4
Other	22.8	40.4
Total accrued expenses	238.5	239.8
Accumulated other comprehensive loss:
Foreign currency translation adjustments	(41.6)	(46.5)
Unrecognized prior service cost of defined benefit pension plan	(0.1)	(0.2)
Effect of cash flow hedges	(0.4)
Unrealized gain on available for sale securities	0.5
Total accumulated other comprehensive loss	$ (41.6)	$ (46.7)

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Financial Instruments (Tables)

3 Months Ended

Mar. 30, 2012

Financial Instruments [Abstract]

Schedule Of Net Foreign Exchange Positions

	March 30, 2012					December 31, 2011
	Buy (Sell)			Notional Amount		Buy (Sell)			Notional Amount
Chinese Renminbi	$	(8.4	)	$	8.4	$	(12.8	)	$	12.8
Euro		(38.2	)		38.2		(30.8	)		30.8
Japanese Yen		(68.5	)		68.5		(100.0	)		100.0
Malaysian Ringgit		29.4			29.4		29.4			29.4
Other Currencies		6.9			25.7		7.6			30.4
	$	(78.8	)	$	170.2	$	(106.6	)	$	203.4

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Supplemental Disclosures Of Cash Flow Information (Tables)

3 Months Ended

Mar. 30, 2012

Supplemental Disclosure Of Cash Flow Information [Abstract]

Non-Cash Financing Activities And Cash Payments

	For Quarters Ended
	March 30, 2012			April 1, 2011
Non-cash financing activities:
Capital expenditures in accounts payable	$	105.0		$	55.1
Equipment acquired or refinanced through capital leases	$	—		$	8.3
Cash (received) paid for:
Interest income	$	(0.5	)	$	(0.3	)
Interest expense	$	8.5		$	9.1
Income taxes	$	4.6		$	2.1

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New Accounting Pronouncements

3 Months Ended

Mar. 30, 2012

New Accounting Pronouncements [Abstract]

New Accounting Pronouncements

Note 3: New Accounting Pronouncements

ASU No. 2011-05, "Comprehensive Income (Topic 220): Presentation of Comprehensive Income" ("ASU 2011-05") and ASU 2011-12, "Comprehensive Income (Topic 220): Deferral of the Effective Date for Amendments to the Presentation of Reclassifications of Items Out of Accumulated Other Comprehensive Income in Accounting Standards Update No. 2011-05" ("ASU 2011-12")

ASU 2011-05 allows an entity to present components of net income and other comprehensive income in one continuous statement, referred to as the statement of comprehensive income, or in two separate, but consecutive statements. The new guidance eliminated the previous option to report other comprehensive income and its components in the statement of changes in equity. While ASU 2011-05 changes the presentation of comprehensive income, there were no changes to the components that are recognized in net income or other comprehensive income under current accounting guidance. The Company adopted this guidance effective in the first quarter of fiscal 2012. The adoption of ASU 2011-05 and the deferrals in ASU 2011-12 did not have a material impact on the Company's Consolidated Financial Statements.

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Segment Information (Tables)

3 Months Ended

Mar. 30, 2012

Segment Information [Abstract]

Segment Information Of Revenues, Gross Profit And Operating Income

	Computing & Consumer Products Group		Automotive, Industrial, Medical and Mil-Aero Products Group		Standard Products Group		SANYO Semiconductor Products Group			Total
For quarter ended March 30, 2012:
Revenues from external customers	$	138.3	$	203.4	$	196.8	$	205.9		$	744.4
Segment gross profit	$	52.5	$	91.3	$	73.5	$	39.9		$	257.2
Segment operating income (loss)	$	20.9	$	19.7	$	46.9	$	(20.4	)	$	67.1
For quarter ended April 1, 2011:
Revenues from external customers	$	155.7	$	208.7	$	228.1	$	278.1		$	870.6
Segment gross profit	$	63.7	$	104.3	$	86.2	$	4.4		$	258.6
Segment operating income (loss)	$	27.4	$	32.5	$	54.6	$	(42.8	)	$	71.7

Reconciliation Of Operating Profit (Loss) From Segments To Consolidated

	Quarter Ended
	March 30, 2012			April 1, 2011
Gross profit for reportable segments	$	257.2		$	258.6
Unallocated amounts:
Other unallocated manufacturing costs	$	(12.0	)	$	(16.2	)
Gross profit	$	245.2		$	242.4
Operating income for reportable segments	$	67.1		$	71.7
Unallocated amounts:
Restructuring and other charges		(11.5	)		(12.4	)
Other unallocated manufacturing costs		(12.0	)		(16.2	)
Other unallocated operating expenses		—			(10.4	)
Operating income	$	43.6		$	32.7

Revenues By Geographic Location Including Local Sales And Exports

	Quarter Ended
	March 30, 2012		April 1, 2011
United States	$	111.3	$	127.2
Other Americas		9.4		6.2
United Kingdom		105.8		109.9
Belgium		0.1		0.9
China		218.3		269.9
Japan		115.2		125.4
Singapore		143.5		170.8
Other Asia/Pacific		40.8		60.3
	$	744.4	$	870.6

Summary Of Property, Plant And Equipment By Geographic Location

	March 30, 2012		December 31, 2011
United States	$	261.0	$	257.5
China		94.5		96.7
Other Europe		129.0		117.9
Malaysia		172.6		164.5
Philippines		209.6		204.0
Other Asia/Pacific		82.4		56.2
Japan		125.3		130.2
Belgium		68.4		70.0
Other Americas		12.7		12.5
	$	1,155.5	$	1,109.5

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Restructuring, Asset Impairments And Other, Net (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		3 Months Ended		3 Months Ended		3 Months Ended		3 Months Ended			3 Months Ended					3 Months Ended						3 Months Ended
	Mar. 30, 2012	Dec. 31, 2011	Mar. 30, 2012 Estimated Employee Separation Charges [Member]	Dec. 31, 2011 Estimated Employee Separation Charges [Member]	Mar. 30, 2012 Estimated Costs To Exit [Member]	Dec. 31, 2011 Estimated Costs To Exit [Member]	Mar. 30, 2012 Restructuring Activities Related To 2011 Thailand Closure [Member] employee	Mar. 30, 2012 Restructuring Activities Related To 2011 Thailand Closure [Member] Accrued Employee Separation Charges [Member]	Mar. 30, 2012 Restructuring Activities Related To 2011 Aizu Closure [Member]	Mar. 30, 2012 Restructuring Activities Related To 2011 Aizu Closure [Member] Estimated Employee Separation Charges [Member]	Mar. 30, 2012 Restructuring Activities Related To 2011 Aizu Closure [Member] Accrued Employee Separation Charges [Member]	Mar. 30, 2012 Restructuring Activities Related To 2011 Aizu Closure [Member] Estimated Costs To Exit [Member]	Mar. 30, 2012 Restructuring Activities Related To The 2011 SANYO Semiconductor Acquisition [Member] employee	Mar. 30, 2012 Restructuring Activities Related To The 2011 SANYO Semiconductor Acquisition [Member] Estimated Costs To Exit [Member]	Mar. 30, 2012 Restructuring Activities Related To The 2011 Global Workforce Reduction [Member]	Mar. 30, 2012 Restructuring Activities Related To The 2011 Global Workforce Reduction [Member] Accrued Employee Separation Charges [Member]	Mar. 30, 2012 Restructuring Activities Related To The 2011 Phoenix Wafer Manufacturing Facility Closure [Member] employee	Jul. 01, 2011 Restructuring Activities Related To The 2011 Phoenix Wafer Manufacturing Facility Closure [Member] employee	Mar. 30, 2012 Restructuring Activities Related To The 2011 Phoenix Wafer Manufacturing Facility Closure [Member] Accrued Exit Costs [Member]	Mar. 30, 2012 Acquisition Of AMIS Holdings, Inc. [Member]	Mar. 30, 2012 Acquisition Of AMIS Holdings, Inc. [Member] Estimated Employee Separation Charges [Member]	Mar. 30, 2012 Acquisition Of AMIS Holdings, Inc. [Member] Estimated Costs To Exit [Member]	Mar. 30, 2012 Acquisition Of AMIS Holdings, Inc. [Member] Fabrication Facility [Member]	Dec. 31, 2011 Notified But Still Employed [Member] Restructuring Activities Related To The 2011 Global Workforce Reduction [Member] employee	Dec. 31, 2011 Total Employees Notified [Member] Restructuring Activities Related To 2011 Thailand Closure [Member] employee	Mar. 30, 2012 Total Employees Notified [Member] Restructuring Activities Related To 2011 Aizu Closure [Member] employee	Sep. 30, 2011 Total Employees Notified [Member] Restructuring Activities Related To The 2011 Global Workforce Reduction [Member] employee
Restructuring Cost and Reserve [Line Items]
Cumulative restructuring charges, net of adjustments			$ 7.3		$ 2.4		$ 15.2		$ 75.9				$ 12.3	$ 2.3	$ 2.5		$ 4.3
Number of employees terminated																		166						6	1,600	207	42
Cash paid for exit costs			1.5		0.5		1.5		5.8
Costs incurred associated with closure of facilities							1.8		0.1			2.9											0.1
Accrued liabilities	24.2	17.3	13.9	8.9	10.3	8.4		0.8			11.5					1.4			0.1	8.1	0.1	8.0
Additional employee separation charges expected to incur										2.8
Recovery from insurance on property, plant and equipment	11.5						0.5
Damaged inventory write-off							$ 2.3
Expected reduction in employment levels							45						500				10

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Share-Based Compensation (Summary Of Share-Based Compensation Expense) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2012		Apr. 01, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expenses	$ 7.4		$ 10.4
Related income tax benefits		[1]		[1]
Share-based compensation expense, net of taxes	7.4		10.4
Cost Of Revenues [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expenses	1.4		1.9
Research And Development [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expenses	1.6		2.0
Selling And Marketing [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expenses	1.6		1.9
General And Administrative [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expenses	$ 2.8		$ 4.6

[1] Most of the Company's share-based compensation relates to its domestic subsidiaries, which have historically experienced recurring net operating losses; therefore, no related tax benefits are recorded.

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Guarantor And Non-Guarantor Statements (Notes To Consolidated Statement Of Operations And Cash Flow) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2012		Apr. 01, 2011
Condensed Financial Statements, Captions [Line Items]
Revenues	$ 744.4		$ 870.6
Cost of product revenues	499.2		628.2
Gross profit	245.2		242.4
Research and development	91.4		91.1
Selling and marketing	45.6		49.4
General and administrative	42.0		47.1
Amortization of acquisition related intangible assets	11.1		9.7
Restructuring, asset impairments and other, net	11.5		12.4
Total operating expenses	201.6		209.7
Operating income (loss)	43.6		32.7
Interest expense	(15.7)		(17.8)
Interest income	0.5		0.3
Other	4.7		(2.5)
Gain (loss) on SANYO Semiconductor acquisition			24.3
Income before income taxes	33.1		37.0
Income tax provision	(4.1)		(0.8)
Net income	29.0		36.2
Net income (loss) attributable to minority interests	(0.8)		(0.7)
Net income attributable to ON Semiconductor Corporation	28.2		35.5
Foreign currency translation adjustments	4.9		0.4
Effects of cash flow hedges	(0.4)
Unrealized gain on available-for-sale securities	0.5
Amortization of prior service costs of defined benefit plan	0.1
Comprehensive income	34.1		36.6
Comprehensive income attributable to minority interests	(0.8)		(0.7)
Comprehensive income attributable to ON Semiconductor Corporation	33.3		35.9
Net cash (used in) provided by operating activities	68.4		125.6
Purchases of property, plant and equipment	(50.4)		(88.7)
Proceeds from sales of property, plant and equipment	1.9
Purchase of businesses, net of cash acquired			(57.6)
Deposits utilized for purchases of property, plant and equipment	(9.6)
Recovery from insurance on property, plant and equipment	11.5
Proceeds from held-to-maturity securities	99.7
Purchase of held-to-maturity securities	(163.3)
Change in restricted cash			142.1
Net cash used in investing activities	(110.2)		(4.2)
Proceeds from issuance of common stock under the employee stock purchase plan			1.9
Proceeds from debt issuance	2.0		15.2
Proceeds from exercise of stock options	4.8		41.1
Payment of capital lease obligation	(11.4)		(9.9)
Purchase of treasury stock	(5.3)		(7.6)
Repayment of long term debt	(15.6)		(19.6)
Net cash (used in) provided by financing activities	(25.5)		21.1
Effect of exchange rate changes on cash and cash equivalents	(5.5)		0.2
Net increase (decrease) in cash and cash equivalents	(72.8)		142.7
Cash and cash equivalents, beginning of period	652.9		623.3
Cash and cash equivalents, end of period	580.1		766.0
Issuer [Member]
Condensed Financial Statements, Captions [Line Items]
Interest expense	(10.9)	[1]	(12.9)	[1]
Equity in earnings	39.1	[1]	48.4	[1]
Income before income taxes	28.2	[1]	35.5	[1]
Net income	28.2	[1]	35.5	[1]
Net income attributable to ON Semiconductor Corporation	28.2	[1]	35.5	[1]
Foreign currency translation adjustments	4.9	[1]	0.4	[1]
Effects of cash flow hedges	(0.4)	[1]
Unrealized gain on available-for-sale securities	0.5	[1]
Amortization of prior service costs of defined benefit plan	0.1	[1]
Comprehensive income	33.3	[1]	35.9	[1]
Comprehensive income attributable to ON Semiconductor Corporation	33.3	[1]	35.9	[1]
SCI LLC [Member]
Condensed Financial Statements, Captions [Line Items]
Revenues	185.6		208.6
Cost of product revenues	116.1		154.9
Gross profit	69.5		53.7
Research and development	43.2		59.3
Selling and marketing	17.1		21.4
General and administrative	15.2		27.4
Amortization of acquisition related intangible assets	4.5		4.4
Total operating expenses	80.0		112.5
Operating income (loss)	(10.5)		(58.8)
Interest expense	(2.3)		(2.2)
Interest income	0.3		0.1
Other	6.2		4.1
Gain (loss) on SANYO Semiconductor acquisition			24.3
Equity in earnings	34.9		42.6
Income before income taxes	28.6		10.1
Income tax provision	8.5		12.2
Net income	37.1		22.3
Net income attributable to ON Semiconductor Corporation	37.1		22.3
Foreign currency translation adjustments	0.8		0.4
Effects of cash flow hedges	(0.4)
Comprehensive income	37.5		22.7
Comprehensive income attributable to ON Semiconductor Corporation	37.5		22.7
Net cash (used in) provided by operating activities	(31.3)		69.3
Purchases of property, plant and equipment	(11.2)		(20.9)
Purchase of businesses, net of cash acquired			53.0
Proceeds from held-to-maturity securities	99.7
Purchase of held-to-maturity securities	(163.3)
Change in restricted cash			142.1
Net cash used in investing activities	(74.8)		174.2
Intercompany loans	(23.3)		(375.1)
Intercompany loan repayments	70.2		144.8
Proceeds from issuance of common stock under the employee stock purchase plan			1.9
Proceeds from exercise of stock options	4.8		41.1
Payment of capital lease obligation	(11.0)		(10.0)
Purchase of treasury stock	(5.3)		(7.6)
Repayment of long term debt	(1.1)		(0.3)
Net cash (used in) provided by financing activities	34.3		(205.2)
Net increase (decrease) in cash and cash equivalents	(71.8)		38.3
Cash and cash equivalents, beginning of period	304.5		392.3
Cash and cash equivalents, end of period	232.7		430.6
Other Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Cost of product revenues	0.2		0.3
Gross profit	(0.2)		(0.3)
Research and development	2.6		3.0
Selling and marketing	0.2		0.3
General and administrative	0.2		0.2
Total operating expenses	3.0		3.5
Operating income (loss)	(3.2)		(3.8)
Equity in earnings	1.9		1.7
Income before income taxes	(1.3)		(2.1)
Net income	(1.3)		(2.1)
Net income attributable to ON Semiconductor Corporation	(1.3)		(2.1)
Comprehensive income	(1.3)		(2.1)
Comprehensive income attributable to ON Semiconductor Corporation	(1.3)		(2.1)
Net cash (used in) provided by operating activities	(0.2)		(0.1)
Purchases of property, plant and equipment	(0.5)		(0.1)
Net cash used in investing activities	(0.5)		(0.1)
Net increase (decrease) in cash and cash equivalents	(0.7)		(0.2)
Cash and cash equivalents, beginning of period	(0.2)
Cash and cash equivalents, end of period	(0.9)		(0.2)
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Revenues	893.5		1,003.1
Cost of product revenues	708.1		805.9
Gross profit	185.4		197.2
Research and development	45.6		28.8
Selling and marketing	28.3		27.7
General and administrative	26.6		19.5
Amortization of acquisition related intangible assets	7.6		6.3
Restructuring, asset impairments and other, net	11.5		12.4
Total operating expenses	119.6		94.7
Operating income (loss)	65.8		102.5
Interest expense	(2.5)		(2.7)
Interest income	0.2		0.2
Other	(1.5)		(6.6)
Income before income taxes	62.0		93.4
Income tax provision	(12.6)		(13.0)
Net income	49.4		80.4
Net income attributable to ON Semiconductor Corporation	49.4		80.4
Foreign currency translation adjustments	4.1
Unrealized gain on available-for-sale securities	0.5
Amortization of prior service costs of defined benefit plan	0.1
Comprehensive income	54.1		80.4
Comprehensive income attributable to ON Semiconductor Corporation	54.1		80.4
Net cash (used in) provided by operating activities	99.9		56.4
Purchases of property, plant and equipment	(38.7)		(67.7)
Proceeds from sales of property, plant and equipment	1.9
Purchase of businesses, net of cash acquired			(110.6)
Deposits utilized for purchases of property, plant and equipment	(9.6)
Recovery from insurance on property, plant and equipment	11.5
Net cash used in investing activities	(34.9)		(178.3)
Intercompany loans	23.3		375.1
Intercompany loan repayments	(70.2)		(144.8)
Proceeds from debt issuance	2.0		15.2
Payment of capital lease obligation	(0.4)		0.1
Repayment of long term debt	(14.5)		(19.3)
Net cash (used in) provided by financing activities	(59.8)		226.3
Effect of exchange rate changes on cash and cash equivalents	(5.5)		0.2
Net increase (decrease) in cash and cash equivalents	(0.3)		104.6
Cash and cash equivalents, beginning of period	348.6		231.0
Cash and cash equivalents, end of period	348.3		335.6
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Revenues	(334.7)		(341.1)
Cost of product revenues	(325.2)		(332.9)
Gross profit	(9.5)		(8.2)
Amortization of acquisition related intangible assets	(1.0)		(1.0)
Total operating expenses	(1.0)		(1.0)
Operating income (loss)	(8.5)		(7.2)
Equity in earnings	(75.9)		(92.7)
Income before income taxes	(84.4)		(99.9)
Net income	(84.4)		(99.9)
Net income (loss) attributable to minority interests	(0.8)		(0.7)
Net income attributable to ON Semiconductor Corporation	(85.2)		(100.6)
Foreign currency translation adjustments	(4.9)		(0.4)
Effects of cash flow hedges	0.4
Unrealized gain on available-for-sale securities	(0.5)
Amortization of prior service costs of defined benefit plan	(0.1)
Comprehensive income	(89.5)		(100.3)
Comprehensive income attributable to minority interests	(0.8)		(0.7)
Comprehensive income attributable to ON Semiconductor Corporation	$ (90.3)		$ (101.0)

[1] ON Semiconductor is a holding company and has no operations apart from those of its operating subsidiaries. Additionally, ON Semiconductor does not maintain a bank account; rather SCI LLC, its primary domestic operating subsidiary, processes all of its cash receipts and disbursements on its behalf.

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Consolidated Balance Sheet (USD $) In Millions, unless otherwise specified	Mar. 30, 2012	Dec. 31, 2011
Assets
Cash and cash equivalents	$ 580.1	$ 652.9
Short-term investments	312.2	248.6
Receivables, net	425.3	457.2
Inventories	633.7	637.4
Other current assets	76.8	121.6
Deferred income taxes, net of allowances	10.3	10.0
Total current assets	2,038.4	2,127.7
Property, plant and equipment, net	1,155.5	1,109.5
Deferred income taxes, net of allowances	30.1	34.2
Goodwill	198.7	198.7
Intangible assets, net	325.8	337.2
Other assets	80.7	76.2
Total assets	3,829.2	3,883.5
Liabilities, Minority Interests and Stockholders' Equity
Accounts payable	408.6	451.8
Accrued expenses	238.5	239.8
Income taxes payable	2.8	7.5
Accrued interest	4.2	0.7
Deferred income on sales to distributors	153.5	172.0
Deferred income taxes, net of allowances	29.6	33.6
Current portion of long-term debt (See Note 6)	377.1	370.1
Total current liabilities	1,214.3	1,275.5
Long-term debt (See Note 6)	811.9	836.9
Other long-term liabilities	247.4	260.1
Deferred income taxes, net of allowances	21.1	17.5
Total liabilities	2,294.7	2,390.0
Commitments and contingencies (See Note 9)
ON Semiconductor Corporation stockholders' equity:
Common stock ($0.01 par value, 750,000,000 shares authorized, 505,423,125 and 502,452,084 shares issued, 453,664,087 and 451,284,220 shares outstanding, respectively)	5.1	5.0
Additional paid-in capital	3,125.6	3,113.5
Accumulated other comprehensive loss	(41.6)	(46.7)
Accumulated deficit	(1,174.1)	(1,202.3)
Less: treasury stock, at cost; 51,759,038 and 51,167,864 shares, respectively	(406.6)	(401.3)
Total ON Semiconductor Corporation stockholders' equity	1,508.4	1,468.2
Minority interests in consolidated subsidiaries	26.1	25.3
Total equity	1,534.5	1,493.5
Total liabilities and equity	$ 3,829.2	$ 3,883.5

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Balance Sheet Information (Warranty Reserves) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2012	Apr. 01, 2011
Balance Sheet Information [Abstract]
Beginning Balance	$ 5.8	$ 3.3
Provision	0.1	0.6
Usage	(0.2)
Ending Balance	$ 5.7	$ 3.9

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Background And Basis Of Presentation

3 Months Ended

Mar. 30, 2012

Background And Basis Of Presentation [Abstract]

Background And Basis Of Presentation

Note 1: Background and Basis of Presentation

ON Semiconductor Corporation ("ON Semiconductor"), together with its wholly and majority-owned subsidiaries (the "Company"), is a premier supplier of high performance, silicon solutions for energy efficient electronics. The Company's broad portfolio of power and signal management, logic, discrete and custom devices helps customers efficiently solve their design challenges in automotive, communications, computing, consumer, industrial, LED lighting, medical, military/aerospace and power applications.

The accompanying unaudited financial statements as of March 30, 2012, and for the three months ended March 30, 2012 and April 1, 2011, respectively, have been prepared in accordance with generally accepted accounting principles for interim financial information. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for audited financial statements. In the opinion of the Company's management, the interim information includes all adjustments, consisting only of normal recurring adjustments, necessary for a fair statement of the results for the interim periods. The footnote disclosures related to the interim financial information included herein are also unaudited. Such financial information should be read in conjunction with the consolidated financial statements and related notes thereto for the year ended December 31, 2011 included in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2011 ("2011 Form 10-K"). The results for the interim periods are not necessarily indicative of the results of operations that may be expected for the full year.

The preparation of financial statements in accordance with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amount of assets and liabilities at the date of the financial statements and the reported amount of revenues and expenses during the reporting period. Significant estimates have been used by management in conjunction with the measurement of valuation allowances relating to trade and tax receivables, inventories and deferred tax assets; estimates of future payouts for customer incentives, warranties, and restructuring activities; assumptions surrounding future pension obligations and related trust returns; the fair value of stock options and of financial instruments (including derivative financial instruments); and future cash flows associated with long-lived assets and goodwill impairment charges. Actual results could differ from these estimates.

Revision of Prior Period Financial Statements

The Company has retrospectively adjusted the consolidated statement comprehensive income for the quarter ended April 1, 2011, primarily related to adjustments to the purchase price allocation of the SANYO Semiconductor Co. Ltd. ("SANYO Semiconductor") acquisition, which resulted in a reduction of the gain on the SANYO Semiconductor acquisition. The Company originally reported a gain of $61.3 million which has been retrospectively adjusted to $24.3 million.

The following table presents the effects of the above adjustments on the Company's consolidated statements of comprehensive income (in millions):

	For the Quarter Ended April 1, 2011
	As reported			As revised
Other income (expenses), net:
Other	$	(0.2	)	$	(2.5	)
Gain on SANYO Semiconductor acquisition		61.3			24.3
Net income attributable to ON Semiconductor Corporation	$	74.8		$	35.5
Net income per common share attributable to ON Semiconductor Corporation
Basic	$	0.17		$	0.08
Diluted	$	0.16		$	0.08

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Commitments And Contingencies (Operating Leases Future Minimum Payments Receivable) (Details) (USD $) In Millions, unless otherwise specified	Mar. 30, 2012
Commitments And Contingencies [Abstract]
Remainder of 2012	$ 24.3
2013	20.6
2014	16.8
2015	14.1
2016	12.3
Thereafter	26.6
Total	$ 114.7

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Background And Basis Of Presentation (Schedule Of The Consolidated Statement Of Comprehensive Income Adjustments) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 30, 2012	Apr. 01, 2011
Background And Basis Of Presentation [Line Items]
Other	$ 4.7	$ (2.5)
Gain on SANYO Semiconductor acquisition		24.3
Net income attributable to ON Semiconductor Corporation	28.2	35.5
Basic	$ 0.06	$ 0.08
Diluted	$ 0.06	$ 0.08
As Revised [Member]
Background And Basis Of Presentation [Line Items]
Other		(2.5)
Gain on SANYO Semiconductor acquisition		24.3
Net income attributable to ON Semiconductor Corporation		35.5
Basic		$ 0.08
Diluted		$ 0.08
As Reported [Member]
Background And Basis Of Presentation [Line Items]
Other		(0.2)
Gain on SANYO Semiconductor acquisition		61.3
Net income attributable to ON Semiconductor Corporation		$ 74.8
Basic		$ 0.17
Diluted		$ 0.16

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Supplemental Disclosures Of Cash Flow Information (Non-Cash Financing Activities And Cash Payments) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2012	Apr. 01, 2011
Supplemental Disclosure Of Cash Flow Information [Abstract]
Capital expenditures in accounts payable	$ 105.0	$ 55.1
Equipment acquired or refinanced through capital leases		8.3
Interest income	(0.5)	(0.3)
Interest expense	8.5	9.1
Income taxes	$ 4.6	$ 2.1

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Goodwill And Intangible Assets (Tables)

3 Months Ended

Mar. 30, 2012

Goodwill And Intangible Assets [Abstract]

Summary Of Goodwill By Operating Segment

	Balance as of March 30, 2012										Balance as of December 31, 2011
	Original Goodwill		Accumulated Amortization			Accumulated Impairment Losses			Carrying Value		Original Goodwill		Accumulated Amortization			Accumulated Impairment Losses			Carrying Value
Operating Segment:
Automotive, Industrial, Medical and Mil-Aero	$	556.6	$	(4.2	)	$	(406.0	)	$	146.4		556.6		(4.2	)		(406.0	)		146.4
Computing & Consumer Products		29.1		(5.6	)		—			23.5		29.1		(5.6	)		—			23.5
Standard Products		37.7		—			(8.9	)		28.8		37.7		—			(8.9	)		28.8
	$	623.4	$	(9.8	)	$	(414.9	)	$	198.7	$	623.4	$	(9.8	)	$	(414.9	)		198.7

Summary Of Intangible Assets, Net

	March 30, 2012
	Original Cost		Accumulated Amortization			Foreign Currency Translation Adjustment			Impairment			Carrying Value		Useful Life (in Years)
Intellectual property	$	13.9	$	(8.2	)	$	—		$	—		$	5.7		5-12
Customer relationships		280.3		(77.0	)		(26.8	)		(3.2	)		173.3		5-18
Patents		43.7		(12.0	)		—			—			31.7		12
Developed technology		146.2		(39.2	)		—			(2.0	)		105.0		5-12
Trademarks		14.0		(3.9	)		—			—			10.1		15
In-process research and development		2.5		—			—			(2.5	)		—
Total intangibles	$	500.6	$	(140.3	)	$	(26.8	)	$	(7.7	)	$	325.8

	December 31, 2011
	Original Cost		Accumulated Amortization			Foreign Currency Translation Adjustment			Impairment			Carrying Value		Useful Life (in Years)
Intellectual property	$	13.9	$	(8.0	)	$	—		$	—		$	5.9		5-12
Customer relationships		280.3		(71.9	)		(26.5	)		(3.2	)		178.7		5-18
Patents		43.7		(10.4	)		—			—			33.3		12
Developed technology		145.6		(35.5	)		—			(2.0	)		108.1		5-12
Trademarks		14.0		(3.4	)		—						10.6		15
In-process research and development		3.1		—			—			(2.5	)		0.6
Total intangibles		500.6		(129.2	)		(26.5	)		(7.7	)		337.2

Summary Of Amortization Expense

	Total
Remainder of 2012	$	33.3
2013		39.7
2014		38.5
2015		37.4
2016		34.4
Thereafter		142.5
Total estimated amortization expense	$	325.8

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Goodwill And Intangible Assets (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2012	Apr. 01, 2011	Dec. 31, 2011
Goodwill And Intangible Assets [Line Items]
Amortization expense	$ 11.1	$ 10.3
Cost of goods sold, amortization		0.6
Number of projects amortized	14
Amortized amount of projects	500.6		500.6
Developed Technology Originally Classified As In- Process Research And Development [Member]
Goodwill And Intangible Assets [Line Items]
Amortized amount of projects	33.4
Useful life, minimum (in years)	8.5
In-Process Research And Development [Member]
Goodwill And Intangible Assets [Line Items]
Amortized amount of projects	$ 2.5		$ 3.1

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Balance Sheet Information (Tables)

3 Months Ended

Mar. 30, 2012

Balance Sheet Information [Abstract]

Supplemental Balance Sheet Information

	March 30, 2012			December 31, 2011
	(in millions)			(in millions)
Receivables, net:
Accounts receivable	$	431.6		$	464.3
Less: Allowance for doubtful accounts		(6.3	)		(7.1	)
	$	425.3		$	457.2
Inventories:
Raw materials	$	61.8		$	58.8
Work in process		414.2			430.8
Finished goods		157.7			147.8
	$	633.7		$	637.4
Property, plant and equipment, net:
Land	$	74.3		$	76.6
Buildings		537.7			539.3
Machinery and equipment		1,997.6			1,943.0
Total property, plant and equipment		2,609.6			2,558.9
Less: Accumulated depreciation		(1,454.1	)		(1,449.4	)
	$	1,155.5		$	1,109.5
Accrued expenses:
Accrued payroll	$	127.9		$	125.2
Sales related reserves		53.8			45.5
Restructuring reserves		24.2			17.3
Accrued pension liability		9.8			11.4
Other		22.8			40.4
	$	238.5		$	239.8
Accumulated other comprehensive loss:
Foreign currency translation adjustments	$	(41.6	)	$	(46.5	)
Unrecognized prior service cost of defined benefit pension plan		(0.1	)		(0.2	)
Effect of cash flow hedges		(0.4	)		—
Unrealized gain on available for sale securities		0.5			—
	$	(41.6	)	$	(46.7	)

Warranty Reserves

	Quarter Ended
	March 30, 2012			April 1, 2011
Beginning Balance	$	5.8		$	3.3
Provision		0.1			0.6
Usage		(0.2	)		—
Ending Balance	$	5.7		$	3.9

Summary Of Net Periodic Pension Cost

	Quarter Ended
	March 30, 2012			April 1, 2011
Service cost	$	2.2		$	2.3
Interest cost		1.3			1.3
Expected return on plan assets		(1.0	)		(1.0	)
Amortization of prior service cost		0.1			0.1
Total net periodic pension cost	$	2.6		$	2.7

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Segment Information (Reconciliation Of Operating Profit (Loss) From Segments To Consolidated) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2012	Apr. 01, 2011
Segment Information [Abstract]
Gross profit for reportable segments	$ 257.2	$ 258.6
Other unallocated manufacturing costs	(12.0)	(16.2)
Gross profit	245.2	242.4
Operating income for reportable segments	67.1	71.7
Restructuring and other charges	(11.5)	(12.4)
Other unallocated operating expenses		(10.4)
Operating income	$ 43.6	$ 32.7

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Goodwill And Intangible Assets

3 Months Ended

Mar. 30, 2012

Goodwill And Intangible Assets [Abstract]

Goodwill And Intangible Assets

Note 2: Goodwill and Intangible Assets

Goodwill

The following table summarizes the original goodwill by relevant operating segment as of March 30, 2012 and December 31, 2011 (in millions):

	Balance as of March 30, 2012										Balance as of December 31, 2011
	Original Goodwill		Accumulated Amortization			Accumulated Impairment Losses			Carrying Value		Original Goodwill		Accumulated Amortization			Accumulated Impairment Losses			Carrying Value
Operating Segment:
Automotive, Industrial, Medical and Mil-Aero	$	556.6	$	(4.2	)	$	(406.0	)	$	146.4		556.6		(4.2	)		(406.0	)		146.4
Computing & Consumer Products		29.1		(5.6	)		—			23.5		29.1		(5.6	)		—			23.5
Standard Products		37.7		—			(8.9	)		28.8		37.7		—			(8.9	)		28.8
	$	623.4	$	(9.8	)	$	(414.9	)	$	198.7	$	623.4	$	(9.8	)	$	(414.9	)		198.7

Goodwill is tested for impairment annually on the first day of the fourth quarter unless a triggering event would require an expedited analysis. Adverse changes in operating results and/or unfavorable changes in economic factors used to estimate fair values could result in a non-cash impairment charge in the future. As of March 30, 2012, there were no triggering events which would require the Company to perform an impairment analysis.

Intangible Assets

Intangible assets, net were as follows as of March 30, 2012 and December 31, 2011 (in millions):

	March 30, 2012
	Original Cost		Accumulated Amortization			Foreign Currency Translation Adjustment			Impairment			Carrying Value		Useful Life (in Years)
Intellectual property	$	13.9	$	(8.2	)	$	—		$	—		$	5.7		5-12
Customer relationships		280.3		(77.0	)		(26.8	)		(3.2	)		173.3		5-18
Patents		43.7		(12.0	)		—			—			31.7		12
Developed technology		146.2		(39.2	)		—			(2.0	)		105.0		5-12
Trademarks		14.0		(3.9	)		—			—			10.1		15
In-process research and development		2.5		—			—			(2.5	)		—
Total intangibles	$	500.6	$	(140.3	)	$	(26.8	)	$	(7.7	)	$	325.8

	December 31, 2011
	Original Cost		Accumulated Amortization			Foreign Currency Translation Adjustment			Impairment			Carrying Value		Useful Life (in Years)
Intellectual property	$	13.9	$	(8.0	)	$	—		$	—		$	5.9		5-12
Customer relationships		280.3		(71.9	)		(26.5	)		(3.2	)		178.7		5-18
Patents		43.7		(10.4	)		—			—			33.3		12
Developed technology		145.6		(35.5	)		—			(2.0	)		108.1		5-12
Trademarks		14.0		(3.4	)		—						10.6		15
In-process research and development		3.1		—			—			(2.5	)		0.6
Total intangibles		500.6		(129.2	)		(26.5	)		(7.7	)		337.2

Amortization expense for intangible assets amounted to $11.1 million for the quarter ended March 30, 2012, none of which was included in cost of revenues; and was $10.3 million for the quarter ended April 1, 2011, of which $0.6 million was included in cost of revenues. The Company is currently amortizing fourteen projects totaling $33.4 million through developed technology relating to projects that were originally classified as in-process research and development at the time of acquisition, but which now have been completed and are being amortized over a weighted average useful life of 8.5 years. Amortization expense for intangible assets, is expected to be as follows over the next five years, and thereafter (in millions):

	Total
Remainder of 2012	$	33.3
2013		39.7
2014		38.5
2015		37.4
2016		34.4
Thereafter		142.5
Total estimated amortization expense	$	325.8

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Consolidated Balance Sheet (Parenthetical) (USD $)	Mar. 30, 2012	Dec. 31, 2011
Stockholders' Equity:
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	750,000,000	750,000,000
Common stock, shares issued	505,423,125	502,452,084
Common stock, shares outstanding	453,664,087	451,284,220
Treasury stock, shares	51,759,038	51,167,864

XML

Supplemental Disclosures Of Cash Flow Information

3 Months Ended

Mar. 30, 2012

Supplemental Disclosure Of Cash Flow Information [Abstract]

Supplemental Disclosure Of Cash Flow Information

Note 12: Supplemental Disclosures of Cash Flow Information

The Company's non-cash financing activities and cash payments for interest and income taxes are as follows (in millions):

	For Quarters Ended
	March 30, 2012			April 1, 2011
Non-cash financing activities:
Capital expenditures in accounts payable	$	105.0		$	55.1
Equipment acquired or refinanced through capital leases	$	—		$	8.3
Cash (received) paid for:
Interest income	$	(0.5	)	$	(0.3	)
Interest expense	$	8.5		$	9.1
Income taxes	$	4.6		$	2.1

XML

Document And Entity Information	3 Months Ended
	Mar. 30, 2012	Apr. 26, 2012
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 30, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q1
Entity Registrant Name	ON SEMICONDUCTOR CORP
Entity Central Index Key	0001097864
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		454,082,151

XML

Segment Information

3 Months Ended

Mar. 30, 2012

Segment Information [Abstract]

Segment Information

Note 13: Segment Information

The Company is organized into four operating segments, which also represent four reporting segments: computing and consumer products group, automotive, industrial, medical and mil-aero products group, standard products group and SANYO Semiconductor products group. Each of the Company's major product lines has been examined and each product line has been assigned to a segment, as illustrated in the table below, based on the Company's operating strategy. Because many products are sold into different end-markets, the total revenue reported for a segment is not indicative of actual sales in the end-market associated with that segment, but rather is the sum of the revenue from the product lines assigned to that segment. These segments represent the Company's view of the business and as such are used to evaluate progress of major initiatives.

Revenues, gross profit and operating income for the Company's reportable segments for the quarters ended March 30, 2012 and April 1, 2011, respectively, are as follows (in millions):

	Computing & Consumer Products Group		Automotive, Industrial, Medical and Mil-Aero Products Group		Standard Products Group		SANYO Semiconductor Products Group			Total
For quarter ended March 30, 2012:
Revenues from external customers	$	138.3	$	203.4	$	196.8	$	205.9		$	744.4
Segment gross profit	$	52.5	$	91.3	$	73.5	$	39.9		$	257.2
Segment operating income (loss)	$	20.9	$	19.7	$	46.9	$	(20.4	)	$	67.1
For quarter ended April 1, 2011:
Revenues from external customers	$	155.7	$	208.7	$	228.1	$	278.1		$	870.6
Segment gross profit	$	63.7	$	104.3	$	86.2	$	4.4		$	258.6
Segment operating income (loss)	$	27.4	$	32.5	$	54.6	$	(42.8	)	$	71.7

Depreciation and amortization expense is included in segment operating income. Reconciliations of segment gross profit and segment operating income to the financial statements are as follows (in millions):

	Quarter Ended
	March 30, 2012			April 1, 2011
Gross profit for reportable segments	$	257.2		$	258.6
Unallocated amounts:
Other unallocated manufacturing costs	$	(12.0	)	$	(16.2	)
Gross profit	$	245.2		$	242.4
Operating income for reportable segments	$	67.1		$	71.7
Unallocated amounts:
Restructuring and other charges		(11.5	)		(12.4	)
Other unallocated manufacturing costs		(12.0	)		(16.2	)
Other unallocated operating expenses		—			(10.4	)
Operating income	$	43.6		$	32.7

Revenues by geographic location including local sales and exports made by operations within each area, based on shipments from the respective country, are summarized as follows (in millions):

	Quarter Ended
	March 30, 2012		April 1, 2011
United States	$	111.3	$	127.2
Other Americas		9.4		6.2
United Kingdom		105.8		109.9
Belgium		0.1		0.9
China		218.3		269.9
Japan		115.2		125.4
Singapore		143.5		170.8
Other Asia/Pacific		40.8		60.3
	$	744.4	$	870.6

Property, plant and equipment, net by geographic location, are summarized as follows (in millions):

	March 30, 2012		December 31, 2011
United States	$	261.0	$	257.5
China		94.5		96.7
Other Europe		129.0		117.9
Malaysia		172.6		164.5
Philippines		209.6		204.0
Other Asia/Pacific		82.4		56.2
Japan		125.3		130.2
Belgium		68.4		70.0
Other Americas		12.7		12.5
	$	1,155.5	$	1,109.5

For the quarters ended March 30, 2012, and April 1, 2011, there was no individual customer which accounted for more than 10.0% of the Company's total revenues.

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Consolidated Statements Of Comprehensive Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 30, 2012	Apr. 01, 2011
Consolidated Statements Of Comprehensive Income [Abstract]
Revenues	$ 744.4	$ 870.6
Cost of product revenues	499.2	628.2
Gross profit	245.2	242.4
Operating expenses:
Research and development	91.4	91.1
Selling and marketing	45.6	49.4
General and administrative	42.0	47.1
Amortization of acquisition-related intangible assets	11.1	9.7
Restructuring, asset impairments and other, net	11.5	12.4
Total operating expenses	201.6	209.7
Operating income	43.6	32.7
Other income (expenses), net:
Interest expense	(15.7)	(17.8)
Interest income	0.5	0.3
Other	4.7	(2.5)
Gain on SANYO Semiconductor acquisition		24.3
Other income (expenses), net	(10.5)	4.3
Income before income taxes	33.1	37.0
Income tax provision	(4.1)	(0.8)
Net income	29.0	36.2
Less: Net income attributable to minority interests	(0.8)	(0.7)
Net income attributable to ON Semiconductor Corporation	28.2	35.5
Comprehensive income:
Foreign currency translation adjustments	4.9	0.4
Effects of cash flow hedges	(0.4)
Unrealized gain on available-for-sale securities	0.5
Amortization of prior service costs of defined benefit plan	0.1
Comprehensive income	34.1	36.6
Comprehensive income attributable to minority interests	(0.8)	(0.7)
Comprehensive income attributable to ON Semiconductor Corporation	$ 33.3	$ 35.9
Net income per common share attributable to ON Semiconductor Corporation:
Basic	$ 0.06	$ 0.08
Diluted	$ 0.06	$ 0.08
Weighted average common shares outstanding:
Basic	452.5	441.4
Diluted	460.6	456.0

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Earnings Per Share And Equity

3 Months Ended

Mar. 30, 2012

Earnings Per Share And Equity [Abstract]

Earnings Per Share And Equity

Note 7: Earnings Per Share and Equity

Earnings Per Share

Calculations of net income per common share attributable to ON Semiconductor are as follows (in millions, except per share data):

	Quarter Ended
	March 30, 2012		April 1, 2011
Net income applicable to ON Semiconductor Corporation	$	28.2	$	35.5
Basic weighted average common shares outstanding		452.5		441.4
Add: Incremental shares for:
Dilutive effect of stock options and awards		5.1		10.8
Dilutive effect of convertible notes		3.0		3.8
Diluted weighted average common shares outstanding		460.6		456.0
Net income per common share attributable to ON Semiconductor Corporation
Basic:	$	0.06	$	0.08
Diluted:	$	0.06	$	0.08

Basic income per common share is computed by dividing net income attributable to ON Semiconductor by the weighted average number of common shares outstanding during the period.

The number of incremental shares from the assumed exercise of stock options and assumed issuance of restricted stock units is calculated by applying the treasury stock method. Common shares related to the employee stock options where the exercise price exceeded the average market price of the Company's common shares for the period have been anti-dilutive and were excluded from the diluted net income per share calculation. The excluded option shares were 11.3 million and 6.1 million for the quarters ended March 30, 2012 and April 1, 2011, respectively.

The incremental shares related to the Company's Zero Coupon Convertible Senior Subordinated Notes due 2024, 2.625% Convertible Senior Subordinated Notes due 2026 (including Series B notes), and the 1.875% Convertible Senior Subordinated Notes due 2025 (collectively, the "Convertible Notes") is determined in accordance with the net share settlement requirements prescribed by ASC Topic 260, Earnings Per Share ("ASC 260"). Under the net share settlement calculation, the Convertible Notes are assumed to be convertible into cash up to the par value, with the excess of par value being convertible into common stock. The dilutive effect occurs when the stock price exceeds the conversion price for each of the Convertible Notes, as of the end of the period, or as described in ASC 260, for year-to-date calculations. In periods when the share price is lower than the conversion price, the impact is anti-dilutive and therefore has no impact on the Company's earnings per share calculations.

Equity

Treasury stock is recorded at cost and is presented as a reduction of stockholders' equity in the accompanying consolidated financial statements. Shares withheld upon the vesting of restricted stock units to pay applicable employee withholding taxes are considered common stock repurchases. Upon vesting, the Company currently does not collect the applicable employee withholding taxes from employees. Instead, the Company automatically withholds, from the restricted stock units that vest, the portion of those shares with a fair market value equal to the amount of the employee withholding taxes due, which is accounted for as a repurchase of common stock. The Company then pays the applicable withholding taxes in cash. The amounts remitted in the quarter ended March 30, 2012 were $5.3 million, for which the Company withheld 591,174 shares of common stock that were underlying the restricted stock units that vested. None of these shares had been reissued or retired as of March 30, 2012, but may be reissued or retired by the Company at a later date.

At December 31, 2011, the minority interest balance was $25.3 million. This balance was increased to $26.1 million at March 30, 2012 due to the minority interest's $0.8 million share of the earnings for the quarter.

At December 31, 2010, the minority interest balance was $22.0 million. This balance increased to $22.7 million at April 1, 2011 due to the minority interest's $0.7 million share of the earnings for the quarter.

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Long-Term Debt

3 Months Ended

Mar. 30, 2012

Long-Term Debt [Abstract]

Long-Term Debt

Note 6: Long-Term Debt

Long-term debt consists of the following (dollars in millions):

	March 30, 2012			December 31, 2011
Senior Revolving Credit Facility (up to $325.0 million)	$	—		$	—
Loan with a Japanese company due 2012 through 2018, interest payable quarterly at 2.22% and 2.33%, respectively (1)		330.3			339.8
Zero Coupon Convertible Senior Subordinated Notes due 2024 (net of discount of $0.3 million and $2.0 million, respectively) (2)		95.9			94.2
1.875% Convertible Senior Subordinated Notes due 2025 (net of discount of $4.9 million and $6.6 million, respectively) (3)		90.1			88.4
2.625% Convertible Senior Subordinated Notes due 2026 (net of discount of $21.6 million and $24.5 million, respectively) (4)		210.8			207.9
2.625% Convertible Senior Subordinated Notes due 2026, Series B (net of discount of $21.1 million and $22.0 million, respectively) (5)		177.5			176.6
Loan with Hong Kong bank, interest payable weekly at 1.99% and 2.04%, respectively		40.0			40.0
Loans with Philippine banks due 2012 through 2015, interest payable monthly and quarterly at an average rate of 2.01% and 2.01%, respectively		65.5			68.2
Loans with Chinese bank due 2013, interest payable quarterly at 4.33% and 4.44%, respectively		7.0			7.0
Loans with Japanese banks due through 2013, interest payable monthly and semi-annually at an average rate of 1.72% and 1.71%, respectively		3.1			3.5
Loan with Singapore bank, interest payable weekly at 1.97% and 1.97%, respectively		27.0			25.0
Loan with British finance company, interest payable monthly at 1.95% and 2.42%, respectively		10.9			13.1
U.S. real estate mortgages payable monthly through 2016 at an average rate of 4.857%		31.2			31.6
U.S. equipment financing payable monthly through 2015 at 3.23%		10.1			10.8
Capital lease obligations		89.6			100.9
Long-term debt, including current maturities		1,189.0			1,207.0
Less: Current maturities		(377.1	)		(370.1	)
Long-term debt	$	811.9		$	836.9

(1) This loan represents Semiconductor Component Industries, LLC ("SCI LLC") unsecured loan with SANYO Electric, which is guaranteed by the Company.

(2) The Zero Coupon Convertible Senior Subordinated Notes due 2024 may be put back to the Company at the option of the holders of the notes on April 15 of 2012, 2014 and 2019 or called at the option of the Company on or after April 15, 2012. See Note 15: "Subsequent Events" of this Form 10-Q for the discussion of the retirement of the Zero Coupon Convertible Senior Subordinated Notes due 2024.

(3) The 1.875% Convertible Senior Subordinated Notes due 2025 may be put back to the Company at the option of the holders of the notes on December 15 of 2012, 2015 and 2020 or called at the option of the Company on or after December 20, 2012.

(4) The 2.625% Convertible Senior Subordinated Notes due 2026 may be put back to the Company at the option of the holders of the notes on December 15 of 2013, 2016 and 2021 or called at the option of the Company on or after December 20, 2013.

(5) The 2.625% Convertible Senior Subordinated Notes due 2026, Series B may be put back to the Company at the option of the holders of the notes on December 15 of 2016 and 2021 or called at the option of the Company on or after December 20, 2016.

Expected maturities relating to the Company's long-term debt as of March 30, 2012 are as follows (in millions):

	Expected Maturities
Remainder of 2012		353.7
2013		328.6
2014		75.3
2015		63.5
2016		262.2
Thereafter		153.6
Total	$	1,236.9

For purposes of the table above, the convertible debt issuances are assumed to mature at their respective put dates. The table also reflects aggregate principal payments of $622.2 million relating to the Zero Coupon Convertible Senior Subordinated Notes due 2024, the 1.875% Convertible Senior Subordinated Notes due 2025, the 2.625% Convertible Senior Subordinated Notes due 2026 and the 2.625% Convertible Senior Subordinated Notes due 2026, Series B.

Debt Guarantees

ON Semiconductor is the sole issuer of the Zero Coupon Convertible Senior Subordinated Notes due 2024, the 1.875% Convertible Senior Subordinated Notes due 2025, the 2.625% Convertible Senior Subordinated Notes due 2026 and the 2.625% Convertible Senior Subordinated Notes due 2026, Series B (collectively, the "Convertible Notes"). See Note 14: "Guarantor and Non-Guarantor Statements" for the condensed consolidated financial information for the issuer of the Convertible Notes, the Guarantor Subsidiaries and the Non-Guarantor Subsidiaries.

XML

Restructuring, Asset Impairments And Other, Net (Tables)

3 Months Ended

Mar. 30, 2012

Restructuring, Asset Impairments And Other, Net [Abstract]

Reconciliation Of "Restructuring, Asset Impairments And Other, Net" Caption On The Consolidated Statement Of Operations

	Restructuring		Other		Total
Three months ended March 30, 2012
Thailand facility closure	$	1.5	$	1.8	$	3.3
Aizu facility closure		5.8		0.1		5.9
SANYO Semiconductor consolidation		—		2.3		2.3
Total	$	7.3	$	4.2	$	11.5

Rollforward Of Accrued Restructuring Charges

	Balance as of December 31, 2011		Charges		Usage			Adjustments			Balance as of March 30, 2012
Estimated employee separation charges:	$	8.9	$	7.3	$	(1.5	)	$	(0.8	)	$	13.9
Estimated costs to exit:	$	8.4	$	2.4	$	(0.5	)	$	—		$	10.3

XML

Guarantor And Non-Guarantor Statements

3 Months Ended

Mar. 30, 2012

Guarantor And Non-Guarantor Statements [Abstract]

Guarantor And Non-Guarantor Statements

Note 14: Guarantor and Non-Guarantor Statements

ON Semiconductor is the sole issuer of the Convertible Notes. ON Semiconductor's domestic subsidiaries, except those domestic subsidiaries acquired through the acquisitions of AMIS, Catalyst Semiconductor, Inc., PulseCore Holdings (Cayman) Inc., California Micro Devices, Sound Design Technologies, and SANYO Semiconductor (collectively, the "Guarantor Subsidiaries"), fully and unconditionally guarantee on a joint and several basis ON Semiconductor's obligations under the Convertible Notes. The Guarantor Subsidiaries include SCI LLC and Semiconductor Components Industries of Rhode Island, Inc., as well as other holding companies whose net assets consist primarily of investments in the joint venture in Leshan, China and equity interests in the Company's other foreign subsidiaries. ON Semiconductor's other remaining subsidiaries (collectively, the "Non-Guarantor Subsidiaries") are not guarantors of the Convertible Notes. The repayment of the unsecured Convertible Notes is subordinated to the senior indebtedness of ON Semiconductor and the Guarantor Subsidiaries on the terms described in the indentures for such Convertible Notes. Condensed consolidated financial information for the issuer of the Convertible Notes, the Guarantor Subsidiaries and the Non-Guarantor Subsidiaries is as follows (in millions):

	Issuer			Guarantor
	ON Semiconductor Corporation (1)			SCI LLC			Other Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Total
As of March 30, 2012
Cash and cash equivalents	$	—		$	232.7		$	(0.9	)	$	348.3		$	—		$	580.1
Short-term investments		—			312.2			—			—			—			312.2
Receivables, net		—			56.9			—			368.4			—			425.3
Inventories		—			35.8			—			605.5			(7.6	)		633.7
Other current assets		—			9.9			—			66.9			—			76.8
Deferred income taxes, net of allowances		—			5.5			—			4.8			—			10.3
Total current assets		—			653.0			(0.9	)		1,393.9			(7.6	)		2,038.4
Property, plant and equipment, net		—			258.3			2.7			897.3			(2.8	)		1,155.5
Deferred income taxes, net of allowances		—			—			—			30.1			—			30.1
Goodwill		—			125.7			37.3			35.7			—			198.7
Intangible assets, net		—			147.8			—			207.1			(29.1	)		325.8
Investments and other assets		2,086.9			1,341.2			61.0			852.9			(4,261.3	)		80.7
Total assets	$	2,086.9		$	2,526.0		$	100.1		$	3,417.0		$	(4,300.8	)	$	3,829.2
Accounts payable	$	—		$	31.3		$	—		$	377.3		$	—		$	408.6
Accrued expenses		—			56.8			0.8			179.2			1.7			238.5
Income taxes payable		—			(8.4	)		—			11.2			—			2.8
Accrued interest		3.8			0.2			—			0.2			—			4.2
Deferred income on sales to distributors		—			39.7			—			113.8			—			153.5
Deferred income taxes, net of allowances		—			—			—			29.6			—			29.6
Current portion of long-term debt		186.0			70.9			—			120.2			—			377.1
Total current liabilities		189.8			190.5			0.8			831.5			1.7			1,214.3
Long-term debt		388.4			375.3			—			48.2			—			811.9
Other long-term liabilities		—			25.8			0.4			221.2			—			247.4
Deferred income taxes, net of allowances		—			5.5			—			15.6			—			21.1
Intercompany		0.3			(303.2	)		(51.5	)		148.9			205.5			—
Total liabilities		578.5			293.9			(50.3	)		1,265.4			207.2			2,294.7
Common stock		5.1			0.3			50.9			147.2			(198.4	)		5.1
Additional paid-in capital		3,125.6			2,716.6			238.4			1,359.5			(4,314.5	)		3,125.6
Accumulated other comprehensive loss		(41.6	)		(41.6	)		—			(34.5	)		76.1			(41.6	)
Accumulated deficit		(1,174.1	)		(443.2	)		(138.9	)		679.4			(97.3	)		(1,174.1	)
Less: treasury stock, at cost		(406.6	)		—			—			—			—			(406.6	)
Total ON Semiconductor Corporation stockholders' equity (deficit)		1,508.4			2,232.1			150.4			2,151.6			(4,534.1	)		1,508.4
Minority interests in consolidated subsidiaries		—			—			—			—			26.1			26.1
Total equity		1,508.4			2,232.1			150.4			2,151.6			(4,508.0	)		1,534.5
Total liabilities and equity	$	2,086.9		$	2,526.0		$	100.1		$	3,417.0		$	(4,300.8	)	$	3,829.2

	Issuer			Guarantor
	ON Semiconductor Corporation (1)			SCI LLC			Other Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Total
As of December 31, 2011
Cash and cash equivalents	$	—			304.5			(0.2	)	$	348.6			—		$	652.9
Short-term investments		—			248.6			—			—			—			248.6
Receivables, net		—			64.7			—			392.5			—			457.2
Inventories		—			36.2			—			599.3			1.9			637.4
Other current assets		—			7.5			—			114.1			—			121.6
Deferred income taxes, net of allowances		—			5.5			—			4.5			—			10.0
Total current assets		—			667.0			(0.2	)		1,459.0			1.9			2,127.7
Property, plant and equipment, net		—			255.2			2.3			854.5			(2.5	)		1,109.5
Deferred income taxes, net of allowances		—			—			—			34.2			—			34.2
Goodwill		—			125.7			37.3			35.7			—			198.7
Intangible assets, net		—			152.3						215.0			(30.1	)		337.2
Investments and other assets		2,036.2			1,303.5			59.1			846.9			(4,169.5	)		76.2
Total assets	$	2,036.2		$	2,503.7		$	98.5		$	3,445.3		$	(4,200.2	)	$	3,883.5
Accounts payable	$	—		$	32.8			0.1			418.9			—		$	451.8
Accrued expenses		—			61.0			0.8			176.3			1.7			239.8
Income taxes payable		—			(0.1	)		—			7.6			—			7.5
Accrued interest		0.6			—			—			0.1			—			0.7
Deferred income on sales to distributors		—			43.7			—			128.3			—			172.0
Deferred income taxes, net of allowances		—			—			—			33.6			—			33.6
Current portion of long-term debt		182.6			74.1			—			113.4			—			370.1
Total current liabilities		183.2			211.5			0.9			878.2			1.7			1,275.5
Long-term debt		384.5			393.8			—			58.6			—			836.9
Other long-term liabilities		—			26.6			0.4			233.1			—			260.1
Deferred income tax, net of allowances		—			5.5			—			12.0			—			17.5
Intercompany		0.3			(318.2	)		(54.5	)		166.9			205.5			—
Total liabilities		568.0			319.2			(53.2	)		1,348.8			207.2			2,390.0
Common stock		5.0			0.3			50.9			146.9			(198.1	)		5.0
Additional paid-in capital		3,113.5			2,711.2			238.4			1,359.2			(4,308.8	)		3,113.5
Accumulated other comprehensive loss		(46.7	)		(46.7	)		—			(39.2	)		85.9			(46.7	)
Accumulated deficit		(1,202.3	)		(480.3	)		(137.6	)		629.6			(11.7	)		(1,202.3	)
Less: treasury stock, at cost		(401.3	)		—			—			—			—			(401.3	)
Total ON Semiconductor Corporation stockholders' equity (deficit)		1,468.2			2,184.5			151.7			2,096.5			(4,432.7	)		1,468.2
Minority interests in consolidated subsidiaries		—			—			—			—			25.3			25.3
Total equity		1,468.2			2,184.5			151.7			2,096.5			(4,407.4	)		1,493.5
Total liabilities and equity	$	2,036.2		$	2,503.7		$	98.5		$	3,445.3		$	(4,200.2	)	$	3,883.5

	Issuer			Guarantor Subsidiaries
	ON Semiconductor Corporation (1)			SCI LLC			Other Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Total
For the quarter ended March 30, 2012
Revenues	$	—		$	185.6		$	—		$	893.5		$	(334.7	)	$	744.4
Cost of product revenues		—			116.1			0.2			708.1			(325.2	)		499.2
Gross profit		—			69.5			(0.2	)		185.4			(9.5	)		245.2
Research and development		—			43.2			2.6			45.6			—			91.4
Selling and marketing		—			17.1			0.2			28.3			—			45.6
General and administrative		—			15.2			0.2			26.6			—			42.0
Amortization of acquisition related intangible assets		—			4.5			—			7.6			(1.0	)		11.1
Restructuring, asset impairments and other, net		—			—			—			11.5			—			11.5
Total operating expenses		—			80.0			3.0			119.6			(1.0	)		201.6
Operating income (loss)		—			(10.5	)		(3.2	)		65.8			(8.5	)		43.6
Interest expense		(10.9	)		(2.3	)		—			(2.5	)		—			(15.7	)
Interest income		—			0.3			—			0.2			—			0.5
Other		—			6.2			—			(1.5	)		—			4.7
Equity in earnings		39.1			34.9			1.9			—			(75.9	)		—
Income (loss) before income taxes		28.2			28.6			(1.3	)		62.0			(84.4	)		33.1
Income tax provision		—			8.5			—			(12.6	)		—			(4.1	)
Net income (loss)		28.2			37.1			(1.3	)		49.4			(84.4	)		29.0
Net income attributable to minority interest		—			—			—			—			(0.8	)		(0.8	)
Net income (loss) attributable to ON Semiconductor Corporation	$	28.2		$	37.1		$	(1.3	)	$	49.4		$	(85.2	)	$	28.2
Comprehensive income:
Net income	$	28.2		$	37.1		$	(1.3	)	$	49.4		$	(84.4	)	$	29.0
Foreign currency translation adjustments		4.9			0.8			—			4.1			(4.9	)		4.9
Effects of cash flow hedges		(0.4	)		(0.4	)		—			—			0.4			(0.4	)
Unrealized gain on available-for-sale securities		0.5			—			—			0.5			(0.5	)		0.5
Amortization of prior service costs of defined benefit plan		0.1			—			—			0.1			(0.1	)		0.1
Comprehensive income		33.3			37.5			(1.3	)		54.1			(89.5	)		34.1
Comprehensive income attributable to minority interest		—			—			—			—			(0.8	)	$	(0.8	)
Comprehensive income attributable to ON Semiconductor Corporation:	$	33.3		$	37.5		$	(1.3	)	$	54.1		$	(90.3	)	$	33.3
Net cash (used in) provided by operating activities	$	—		$	(31.3	)	$	(0.2	)	$	99.9		$	—		$	68.4
Cash flows from investing activities:
Purchases of property, plant and equipment		—			(11.2	)		(0.5	)		(38.7	)		—			(50.4	)
Proceeds from sales of property, plant and equipment		—			—			—			1.9			—			1.9
Deposits utilized for purchases of property, plant and equipment		—			—			—			(9.6	)		—			(9.6	)
Recovery from insurance on property, plant and equipment		—			—			—			11.5			—			11.5
Proceeds from held-to-maturity securities		—			99.7			—			—			—			99.7
Purchase of held-to-maturity securities		—			(163.3	)		—			—			—			(163.3	)
Net cash used in investing activities		—			(74.8	)		(0.5	)		(34.9	)		—			(110.2	)
Cash flows from financing activities:
Intercompany loans		—			(23.3	)		—			23.3			—			—
Intercompany loan repayments		—			70.2			—			(70.2	)		—			—
Proceeds from debt issuance		—			—			—			2.0			—			2.0
Proceeds from exercise of stock options		—			4.8			—			—						4.8
Payment of capital lease obligation		—			(11.0	)		—			(0.4	)					(11.4	)
Purchase of treasury stock		—			(5.3	)		—			—			—			(5.3	)
Repayment of long term debt		—			(1.1	)		—			(14.5	)		—			(15.6	)
Net cash provided by (used in) financing activities		—			34.3			—			(59.8	)		—			(25.5	)
Effect of exchange rate changes on cash and cash equivalents											(5.5	)					(5.5	)
Net increase (decrease) in cash and cash equivalents		—			(71.8	)		(0.7	)		(0.3	)		—			(72.8	)
Cash and cash equivalents, beginning of period		—			304.5			(0.2	)		348.6						652.9
Cash and cash equivalents, end of period	$	—		$	232.7		$	(0.9	)	$	348.3		$	—		$	580.1

	Issuers			Guarantor Subsidiaries
	ON Semiconductor Corporation (1)			SCI LLC			Other Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Total
For the quarter ended April 1, 2011
Revenues	$	—		$	208.6		$	—		$	1,003.1		$	(341.1	)	$	870.6
Cost of product revenues		—			154.9			0.3			805.9			(332.9	)		628.2
Gross profit		—			53.7			(0.3	)		197.2			(8.2	)		242.4
Research and development		—			59.3			3.0			28.8			—			91.1
Selling and marketing		—			21.4			0.3			27.7			—			49.4
General and administrative		—			27.4			0.2			19.5			—			47.1
Amortization of acquisition related intangible assets		—			4.4			—			6.3			(1.0	)		9.7
Restructuring, asset impairments and other, net		—			—			—			12.4			—			12.4
Total operating expenses		—			112.5			3.5			94.7			(1.0	)		209.7
Operating income (loss)		—			(58.8	)		(3.8	)		102.5			(7.2	)		32.7
Interest expense		(12.9	)		(2.2	)		—			(2.7	)		—			(17.8	)
Interest income		—			0.1			—			0.2			—			0.3
Other		—			4.1			—			(6.6	)		—			(2.5	)
Gain (loss) on SANYO Semiconductor acquisition		—			24.3			—			—			—			24.3
Loss on debt repurchase		—			—			—			—			—			—
Equity in earnings		48.4			42.6			1.7			—			(92.7	)		—
Income (loss) before income taxes		35.5			10.1			(2.1	)		93.4			(99.9	)		37.0
Income tax provision		—			12.2			—			(13.0	)		—			(0.8	)
Net income (loss)		35.5			22.3			(2.1	)		80.4			(99.9	)		36.2
Net income (loss) attributable to minority interest		—			—			—			—			(0.7	)		(0.7	)
Net income (loss) attributable to ON Semiconductor Corporation	$	35.5		$	22.3		$	(2.1	)	$	80.4		$	(100.6	)	$	35.5
Comprehensive income (loss):
Net income (loss)	$	35.5		$	22.3		$	(2.1	)	$	80.4		$	(99.9	)	$	36.2
Foreign currency translation adjustments		0.4			0.4			—			—			(0.4	)		0.4
Comprehensive income		35.9			22.7			(2.1	)		80.4			(100.3	)		36.6
Comprehensive income attributable to minority interests		—			—			—			—			(0.7	)		(0.7	)
Comprehensive income (loss) attributable to ON Semiconductor Corporation	$	35.9		$	22.7		$	(2.1	)	$	80.4		$	(101.0	)	$	35.9
Net cash provided by operating activities	$	—		$	69.3		$	(0.1	)	$	56.4		$	—		$	125.6
Cash flows from investing activities:
Purchases of property, plant and equipment		—			(20.9	)		(0.1	)		(67.7	)		—			(88.7	)
Purchase of a business, net of cash acquired		—			53.0			—			(110.6	)		—			(57.6	)
Purchase of restricted cash		—			142.1			—			—			—			142.1
Net cash used in investing activities		—			174.2			(0.1	)		(178.3	)		—			(4.2	)
Cash flows from financing activities:
Intercompany loans		—			(375.1	)		—			375.1			—			—
Intercompany loan repayments		—			144.8			—			(144.8	)		—			—
Proceeds from issuance of common stock under the employee stock purchase plan		—			1.9			—			—			—			1.9
Proceeds from debt issuance		—			—			—			15.2			—			15.2
Proceeds from exercise of stock options		—			41.1			—			—			—			41.1
Payment of capital lease obligation		—			(10.0	)		—			0.1			—			(9.9	)
Purchase of treasury stock		—			(7.6	)		—			—			—			(7.6	)
Repayment of long term debt		—			(0.3	)					(19.3	)		—			(19.6	)
Net cash used in financing activities		—			(205.2	)		—			226.3			—			21.1
Effect of exchange rate changes on cash and cash equivalents		—			—			—			0.2			—			0.2
Net increase (decrease) in cash and cash equivalents		—			38.3			(0.2	)		104.6			—			142.7
Cash and cash equivalents, beginning of period		—			392.3			—			231.0			—			623.3
Cash and cash equivalents, end of period	$	—		$	430.6		$	(0.2	)	$	335.6		$	—			766.0

(1) ON Semiconductor is a holding company and has no operations apart from those of its operating subsidiaries. Additionally, ON Semiconductor does not maintain a bank account; rather SCI LLC, its primary domestic operating subsidiary, processes all of its cash receipts and disbursements on its behalf.

See also Note 9: "Commitments and Contingencies—Other Contingencies" for further discussion of the Company's guarantees.

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Fair Value Of Financial Instruments

3 Months Ended

Mar. 30, 2012

Fair Value Of Financial Instruments [Abstract]

Fair Value Of Financial Instruments

Note 10: Fair Value of Financial Instruments

The following table summarizes the Company's financial assets and liabilities measured at fair value on a recurring basis as of March 30, 2012 and December 31, 2011 (in millions):

	March 30, 2012		Quoted Prices in Active Markets (Level 1)		Balance as of December 31, 2011		Quoted Prices in Active Markets (Level 1)
Description
Assets:
Cash and cash equivalents:
Demand and time deposits	$	431.0	$	431.0	$	455.3	$	455.3
Treasuries		92.6		92.6		131.1		131.1
Commercial paper		54.2		54.2		50.9		50.9
Corporate bonds		2.3		2.3		15.6		15.1
Other Current Assets
Foreign currency exchange contracts	$	0.4	$	0.4	$	0.7	$	0.7
Liabilities:
Foreign currency exchange contracts	$	0.2	$	0.2	$	0.1	$	0.1

The Company's financial assets and liabilities are valued using market prices on active markets (Level 1). Level 1 instrument valuations are obtained from real-time quotes for transactions in active exchange markets involving identical assets. Cash and cash equivalents are short-term, highly liquid investments with original or remaining maturities of three months or less when purchased. The Company's short-term investments balance of $312.2 million is classified as held-to-maturity securities and is carried at amortized cost, which excludes $0.2 million of unrealized losses as of March 30, 2012.

The carrying amounts of other current assets and liabilities, such as accounts receivable and accounts payable, approximate fair value based on the short-term nature of these instruments.

As of March 30, 2012, the Company held no direct investments in auction rate securities, collateralized debt obligations, structured investment vehicles or mortgage-backed securities.

Long-Term Debt, Including Current Portion

The carrying amounts and fair values of the Company's long-term borrowings (excluding capital lease obligations, real estate mortgages and equipment financing) at March 30, 2012 and December 31, 2011 are as follows (in millions):

	March 30, 2012				December 31, 2011
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Long-term debt, including current portion
Convertible Notes	$	574.3	$	716.5	$	567.1	$	683.9
Long-term debt	$	483.9	$	453.3	$	496.6	$	462.0

The fair value of the Convertible Notes was estimated based on quoted market prices. The fair value of other long-term debt was estimated based on discounting the remaining principal and interest payments using current market rates for similar debt and consideration of credit and default risk at March 30, 2012 and December 31, 2011.

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Fair Value Of Financial Instruments (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2012	Dec. 31, 2011
Fair Value Of Financial Instruments [Abstract]
Short-term investments	$ 312.2	$ 248.6
Unrealized losses on securities	$ 0.2

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Share-Based Compensation

3 Months Ended

Mar. 30, 2012

Share-Based Compensation [Abstract]

Share-Based Compensation

Note 8: Share-Based Compensation

Total share-based compensation expense related to the Company's employee stock options, restricted stock units and employee stock purchase plan ("ESPP") for the quarters ended March 30, 2012 and April 1, 2011 were comprised as follows (in millions):

	Quarter Ended
	March 30, 2012		April 1, 2011
Cost of revenues	$	1.4	$	1.9
Research and development		1.6		2.0
Selling and marketing		1.6		1.9
General and administrative		2.8		4.6
Share-based compensation expense before income taxes	$	7.4	$	10.4
Related income tax benefits (1)		—		—
Share-based compensation expense, net of taxes	$	7.4	$	10.4

(1) Most of the Company's share-based compensation relates to its domestic subsidiaries, which have historically experienced recurring net operating losses; therefore, no related tax benefits are recorded.

At March 30, 2012, total unrecognized estimated share-based compensation expense, net of estimated forfeitures, related to non-vested stock options granted prior to that date was $10.0 million. At March 30, 2012, total unrecognized share-based compensation expense, net of forfeitures, related to non-vested restricted stock units with time-based service conditions and performance-based vesting criteria granted prior to that date was $45.9 million. The total intrinsic value of stock options exercised during the quarter ended March 30, 2012 was $3.4 million. The Company recorded cash received from the exercise of stock options of $4.8 million and no related tax benefits during the quarter ended March 30, 2012.

Share-Based Compensation Information

The fair value of each option grant is estimated on the date of grant using a lattice-based option valuation model. The lattice-based model uses: (1) a constant volatility; (2) an employee exercise behavior model (based on an analysis of historical exercise behavior); and (3) the treasury yield curve to calculate the fair value of each option grant.

The weighted-average estimated fair value of employee stock options granted during the quarters ended March 30, 2012 and April 1, 2011 was $3.41 per share and $4.22 per share, respectively, and was calculated using the lattice-based model with the following weighted-average assumptions (annualized percentages):

	Quarter Ended
	March 30, 2012		April 1, 2011
Volatility		46.7%		41.0%
Risk-free interest rate		0.9%		2.1%
Expected term		4.8 years		4.9 years

Share-based compensation expense recognized in the Consolidated statement of comprehensive income is based on awards ultimately expected to vest. Forfeitures are estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. Pre-vesting forfeitures for stock options were estimated to be approximately 11% and 12% in the quarters ended March 30, 2012 and April 1, 2011, respectively. Pre-vesting forfeitures for restricted stock units were estimated to be approximately 4% and 12% in the quarters ended March 30, 2012 and April 1, 2011, respectively.

Shares Available

As of December 31, 2011, there was an aggregate of 17.4 million shares of common stock available for grant under the Company's Amended and Restated Stock Incentive Plan (the "Amended and Restated SIP") and 4.1 million shares available for issuance under the ESPP. As of March 30, 2012, there was an aggregate of 11.5 million shares of common stock available for grant under the Amended and Restated SIP and 4.1 million shares available for issuance under the ESPP.

Stock Options

A summary of stock option transactions follows (in millions except per share and term data):

	Quarter Ended March 30, 2012
	Number of Shares			Weighted-Average Exercise Price		Weighted Average Remaining Contractual Term (in years)		Aggregate Intrinsic Value (In-The-Money)
Outstanding at December 31, 2011		18.7		$	7.70
Granted		1.4			8.40
Exercised		(0.9	)		4.99
Canceled		(0.2	)		7.63
Outstanding at March 30, 2012		19.0		$	7.88		4.6	$	29.8
Exercisable at March 30, 2012		14.8			7.84		4.1	$	25.2

Additional information about stock options outstanding at March 30, 2012 with exercise prices less than or above $9.01 per share, the closing price of the Company's common stock at March 30, 2012, follows (number of shares in millions):

	Exercisable				Unexercisable				Total
Exercise Prices	Number of Shares		Weighted Average Exercise Price		Number of Shares		Weighted Average Exercise Price		Number of Shares		Weighted Average Exercise Price
Less than $9.01		8.5	$	6.04		3.5	$	7.74		12.0	$	6.54
Above $9.01		6.3	$	10.28		0.7	$	9.73		7.0	$	10.22
Total Outstanding		14.8	$	7.84		4.2	$	8.07		19.0	$	7.88

Restricted Stock Units

Restricted stock units vest over one to three years with service-based requirements or performance-based requirements and are payable in shares of the Company's common stock upon vesting. The following table presents a summary of the status of the Company's restricted stock units granted to certain officers and employees of the Company as of March 30, 2012, and changes during the three months ended March 30, 2012 (number of shares in millions):

	Quarter Ended March 30, 2012
	Number of Shares			Weighted-Average Grant Date Fair Value
Nonvested shares of restricted stock units at December 31, 2011		9.6		$	7.95
Granted		3.1			8.40
Released		(2.0	)		5.75
Forfeited		(0.1	)		8.69
Nonvested shares of restricted stock units at March 30, 2012		10.6		$	8.49

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Commitments And Contingencies

3 Months Ended

Mar. 30, 2012

Commitments And Contingencies [Abstract]

Commitments And Contingencies

Note 9: Commitments and Contingencies

Leases

The following is a schedule by year of future minimum lease obligations under non-cancelable operating leases as of March 30, 2012 (in millions):

Remainder of 2012		24.3
2013		20.6
2014		16.8
2015		14.1
2016		12.3
Thereafter		26.6
Total	$	114.7

Other Contingencies

The Company's headquarters in Phoenix, Arizona are located on property that is a "Superfund" site, a property listed on the National Priorities List and subject to clean-up activities under the Comprehensive Environmental Response, Compensation, and Liability Act. Motorola, Inc. ("Motorola"), and now Freescale Semiconductor, Inc. ("Freescale"), have been involved in the cleanup of on-site solvent contaminated soil and groundwater and off-site contaminated groundwater pursuant to consent decrees with the State of Arizona. As part of the Company's August 4, 1999 recapitalization ("Recapitalization"), Motorola retained responsibility for this contamination, and Motorola and Freescale have agreed to indemnify the Company with respect to remediation costs and other costs or liabilities related to this matter.

As part of the Recapitalization, the Company was granted various manufacturing facilities, one of which was located in the Czech Republic. In regards to this site, the Company has ongoing remediation projects to respond to releases of hazardous substances that occurred prior to the Recapitalization during the years that this facility was operated by government-owned entities. In each case, the remediation project consists primarily of monitoring groundwater wells located on-site and off-site with additional action plans developed to respond in the event activity levels are exceeded at each of the respective locations. The government of the Czech Republic has agreed to indemnify the Company and the respective subsidiaries, subject to specified limitations, for remediation costs associated with this historical contamination. Based upon the information available, total future remediation costs to the Company are not expected to be material.

The Company's design center in East Greenwich, Rhode Island is located on property that has localized soil contamination. In connection with the purchase of the facility, the Company entered into a Settlement Agreement and Covenant Not To Sue with the State of Rhode Island. This agreement requires that remedial actions be undertaken and a quarterly groundwater monitoring program be initiated by the former owners of the property. Based on the information available, any costs to the Company in connection with this matter are not expected to be material.

As a result of the acquisition of AMIS, the Company is a "primary responsible party" to an environmental remediation and cleanup at AMIS's former corporate headquarters in Santa Clara, California. Costs incurred by AMIS include implementation of the clean-up plan, operations and maintenance of remediation systems, and other project management costs. However, AMIS's former parent company, a subsidiary of Nippon Mining, contractually agreed to indemnify AMIS and the Company for any obligation relating to environmental remediation and cleanup at this location. The Company has not offset the receivable from Nippon Mining's subsidiary against the estimated liability on the consolidated balance sheet. Therefore, a receivable from Nippon Mining's subsidiary is recorded on the accompanying consolidated balance sheet as of March 30, 2012 related to this matter for approximately $0.1 million. The Company does not believe that the liability and receivable amounts are material to the Company's consolidated financial position, results of operations or cash flow.

The Company's facility in Aizu, Japan is located on property where soil and ground water contamination has been detected. The Company believes that the contamination originally occurred during a time when the facility was operated by a prior owner. The Company is working with local authorities to determine the appropriate remediation actions and expects remediation costs, subject to certain limitations, to be indemnified pursuant to an agreement between the Company and the prior owner or covered by insurance subject to a deductible. Based on information available, any costs to the Company in connection with this matter are not expected to be material.

In the normal course of business, the Company provides standby letters of credit or other guarantee instruments to certain parties initiated by either the Company or its subsidiaries, as required for transactions such as material purchase commitments, agreements to mitigate collection risk, leases or customs guarantees. The Company's senior revolving credit facility includes a $40.0 million availability for the issuance of letters of credit. A $0.2 million letter of credit was outstanding under the senior revolving credit facility as of March 30, 2012. A bank guarantee issued on behalf of the Company under a non-reusable commitment credit with the bank has an outstanding amount of $3.6 million as of March 30, 2012. The Belgian bank that issued the guarantee has the right to create a mortgage on the real property of one of the Company's European subsidiaries in the amount of $3.0 million, but had not done so as of March 30, 2012. The Company also had outstanding guarantees and letters of credit outside of its senior revolving credit facility and its non-reusable commitment credit totaling $10.1 million as of March 30, 2012.

As part of securing financing in the normal course of business, the Company issued guarantees related to its receivables financing, capital lease obligations and real estate mortgages which totaled approximately $110.1 million as of March 30, 2012. The Company is also a guarantor of SCI LLC's unsecured loan with SANYO Electric, which had a balance of $330.3 million as of March 30, 2012. See Note 6: "Long-Term Debt" for further information on this loan.

For its operating leases, the Company expects to make cash payments and similarly incur expenses totaling $114.7 million as payments come due. The Company has not recorded any liability in connection with these operating leases, letters of credit and guarantee arrangements.

Based on historical experience and information currently available, the Company believes that in the foreseeable future it will not be required to make payments under the standby letters of credit or guarantee arrangements.

Indemnification Contingencies

The Company is a party to a variety of agreements entered into in the ordinary course of business pursuant to which it may be obligated to indemnify the other parties for certain liabilities that arise out of or relate to the subject matter of the agreements. Some of the agreements entered into by the Company require it to indemnify the other party against losses due to intellectual property infringement, property damage including environmental contamination, personal injury, failure to comply with applicable laws, the Company's negligence or willful misconduct, or breach of representations and warranties and covenants related to such matters as title to sold assets.

The Company faces risk of exposure to warranty and product liability claims in the event that its products fail to perform as expected or such failure of its products results, or is alleged to result, in bodily injury or property damage (or both). In addition, if any of the Company's designed products are alleged to be defective, the Company may be required to participate in their recall. Depending on the significance of any particular customer and other relevant factors, the Company may agree to provide more favorable indemnity rights to such customer for valid warranty claims.

The Company has, from time to time, been active in merger and acquisition activity. In connection with these mergers or acquisitions, the Company has agreed to indemnify the other party or parties to the merger or acquisition agreement for certain claims or occurrences, limited in most instances by time and/or monetary amounts.

The Company and its subsidiaries provide for indemnification of directors, officers and other persons in accordance with limited liability agreements, certificates of incorporation, by-laws, articles of association or similar organizational documents, as the case may be. The Company maintains directors' and officers' insurance, which should enable it to recover a portion of any future amounts paid.

In addition to the above, from time to time the Company provides standard representations and warranties to counterparties in contracts in connection with sales of its securities and the engagement of financial advisers and also provides indemnities that protect the counterparties to these contracts in the event they suffer damages as a result of a breach of such representations and warranties or in certain other circumstances relating to the sale of securities or their engagement by the Company.

While the Company's future obligations under certain agreements may contain limitations on liability for indemnification, other agreements do not contain such limitations and under such agreements it is not possible to predict the maximum potential amount of future payments due to the conditional nature of the Company's obligations and the unique facts and circumstances involved in each particular agreement. Historically, payments made by the Company under any of these indemnities have not had a material effect on the Company's business, financial condition, results of operations or cash flows. Additionally, the Company does not believe that any amounts that it may be required to pay under these indemnities in the future will be material to the Company's business, financial position, results of operations or cash flows.

Legal Matters

The Company is currently involved in a variety of legal matters that arise in the normal course of business. Based on information currently available, management does not believe that the ultimate resolution of these matters, including the matters described or referred to in the next paragraphs will have a material effect on the Company's financial condition, results of operations or cash flows. However, because of the nature and inherent uncertainties of litigation, should the outcome of these actions be unfavorable, the Company's business, consolidated financial position, results of operations or cash flows could be materially and adversely affected.

On December 15, 2010, a lawsuit was filed in the United States District Court for the District of Delaware (the "Court") captioned Robert A. Lorber v. Francis P. Barton, George H. Cave, Donald A. Colvin, Curtis J. Crawford, Ph.D., Emmanuel T. Hernandez, Phillip D. Hester, Keith D. Jackson, J. Daniel McCranie, Robert Mahoney, W. John Nelson, Daryl Ostrander, Robert H. Smith, and ON Semiconductor Corporation, C.A. No. 1:10-CV-01101-GMS. The lawsuit was brought by a stockholder of ON Semiconductor and alleges generally that (1) ON Semiconductor's 2010 proxy statement contained materially false and misleading information regarding the Amended and Restated SIP in violation of the federal securities laws; (2) the Amended and Restated SIP was defective and, thus, any awards made pursuant to the Amended and Restated SIP would not be tax-deductible pursuant to Section 162(m) of the Internal Revenue Code and applicable regulations; and (3) the individual defendants (who are ON Semiconductor officers and directors) violated their state law fiduciary duties and wasted corporate assets in connection with the adoption of the Amended and Restated SIP. The Company moved to dismiss the lawsuit. On March 2, 2012, the parties entered into a stipulation of settlement (the "Settlement Stipulation") that sets forth the terms of a settlement which, if approved by the Court, will result in the dismissal of this action. In the Settlement Stipulation, the Company and the other individual defendants have denied and continue to deny that they committed any of the wrongful acts alleged in this lawsuit, and maintain that they have diligently, scrupulously, and meticulously complied with their fiduciary and other legal duties. On March 2, 2012, the parties submitted for the Court's approval the Settlement Stipulation and other papers needed to effect a resolution of this lawsuit. While the Company makes no assurances or guarantees as to the outcome of this proceeding, based upon our current knowledge, the Company believes that the final result of this action will have no material effect on our consolidated financial position, results of operations, or cash flows.

In the normal course of business, the Company faces risk of exposure to warranty and product liability claims. Related to this, the Company (through its subsidiary SANYO Semiconductor) has received a request from one of its customers to pay to the customer an amount currently estimated by the customer to be approximately $20.0 million in respect of costs incurred or to be incurred by the customer and its customers in remedying certain alleged failures of SANYO Semiconductor products sold to the customer prior to the Company's acquisition of SANYO Semiconductor. The Company is conducting investigations and evaluations of this matter, including fact finding and assessing possible liability, available defenses, mitigating circumstances and possible third party indemnity coverage. It is difficult to predict with certainty the ultimate loss exposure to ON Semiconductor; however, management believes that a number of defenses are available to the Company and it would expect to defend itself vigorously against any formal claim that may be asserted. While the Company makes no assurances or guarantees as to the outcome of this claim, based upon its current knowledge, the Company believes that the final result of this matter will have no material effect on its consolidated financial position, results of operations, or cash flows.

On December 27, 2011, 112 former employees of the Company's subsidiary SANYO Semiconductor Thailand ("SSTH"), whose manufacturing operations were located in the Rojana Industrial Park in Ayutthaya, Thailand ("Rojana Park"), filed complaints with the Labor Region 1 Court in Lopburi Province in Thailand, seeking damages against SSTH for unfair termination under Thailand's labor laws. On January 19, 2012, four additional former employees filed similar complaints with the Labor Region 1 Court in Lopburi Province in Thailand against SSTH. On March 19, 2012, 46 additional former employees filed similar complaints with the Labor Region 1 Court in Lopburi Province in Thailand against SSTH. All the cases are based on the widespread flooding in Thailand that occurred in the fourth quarter of 2011 and affected the Rojana Park. The floods severely damaged SSTH's buildings, equipment and other property at its Rojana Park location. As a result, the Company decided to cease SSTH's operations in Thailand and SSTH asked its employees to resign. The lawsuits seek a total of approximately $25.4 million, which includes alleged damages for: (1) wages calculated based on the employee's last wage rate from the date of termination through the date of retirement; (2) mental anguish; (3) lost bonuses; and/or (4) other damages. The Company is currently evaluating the facts and legal issues and it is difficult at this time to predict with certainty the ultimate loss exposure to ON Semiconductor for this matter. The Company denies the substantive allegations of the lawsuits and expects to vigorously defend against them.

See Part I, Item 1 "Business-Government Regulation" of the 2011 Form 10-K for information on certain environmental matters.

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Financial Instruments

3 Months Ended

Mar. 30, 2012

Financial Instruments [Abstract]

Financial Instruments

Note 11: Financial Instruments

Foreign Currencies

As a multinational business, the Company's transactions are denominated in a variety of currencies. When appropriate, the Company uses forward foreign currency contracts to reduce its overall exposure to the effects of currency fluctuations on its results of operations and cash flows. The Company's policy prohibits trading in currencies for which there are no underlying exposures, or entering into trades for any currency to intentionally increase the underlying exposure.

The Company primarily hedges existing assets and liabilities and cash flows associated with transactions currently on its balance sheet.

As of March 30, 2012 and December 31, 2011, the Company had net outstanding foreign exchange contracts in a sell position with a net notional amount of $170.2 million and $203.4 million, respectively. Such contracts were obtained through financial institutions and were scheduled to mature within three months. Management believes that these financial instruments should not subject the Company to increased risks from foreign exchange movements because gains and losses on these contracts should offset losses and gains on the assets, liabilities and transactions being hedged. The following schedule shows the Company's net foreign exchange positions in U.S. dollars as of March 30, 2012 and December 31, 2011 (in millions):

	March 30, 2012					December 31, 2011
	Buy (Sell)			Notional Amount		Buy (Sell)			Notional Amount
Chinese Renminbi	$	(8.4	)	$	8.4	$	(12.8	)	$	12.8
Euro		(38.2	)		38.2		(30.8	)		30.8
Japanese Yen		(68.5	)		68.5		(100.0	)		100.0
Malaysian Ringgit		29.4			29.4		29.4			29.4
Other Currencies		6.9			25.7		7.6			30.4
	$	(78.8	)	$	170.2	$	(106.6	)	$	203.4

The Company is exposed to credit-related losses if counterparties to its foreign exchange contracts fail to perform their obligations. As of March 30, 2012, the counterparty on the Company's foreign exchange contracts is a highly rated financial institution and no credit-related losses are anticipated. Amounts payable or receivable under the contracts are included in other current assets or accrued expenses in the accompanying consolidated balance sheet. For March 30, 2012 and April 1, 2011, realized and unrealized foreign currency transaction gains/losses totaled a gain of $4.7 million and a loss of $2.5 million, respectively.

Cash Flow Hedges

The Company is exposed to global market risks associated with fluctuations in interest rates and foreign currency exchange rates. The Company addresses these risks through controlled management that includes the use of derivative financial instruments to economically hedge or reduce these exposures. The Company does not enter into derivative financial instruments for trading or speculative purposes.

The purpose of the Company's foreign currency hedging activities is to protect the Company from the risk that the eventual cash flows resulting from transactions in foreign currencies will be adversely affected by changes in exchange rates. The Company enters into forward contracts that are designated as foreign-currency cash flow hedges of selected forecasted payments denominated in currencies other than U.S. dollars. All the contracts mature within 12 months and upon maturity the amount recorded in accumulated other comprehensive income are reclassified into earnings.The Company documents all relationships between designated hedging instruments and hedged items, as well as its risk management objective and strategy for undertaking hedge transactions.

All derivatives are recognized on the balance sheet at their fair value and classified based on the instrument's maturity date. The total notional amount of outstanding derivatives designated as cash flow hedges as of March 30, 2012, was approximately $46.0 million, which is primarily comprised of cash flow hedges for Malaysian Ringgit/U.S. Dollar, and Philippine Peso/U.S. Dollar currency pairs.

For the quarter ended March 30, 2012, the Company recorded a loss of $0.4 million, recognized in other comprehensive income on derivatives associated with cash flow hedges. As of March 30, 2012 the Company had liability balances for contracts designated as cash flow hedging instruments of $0.2 million, which were classified as other liabilities. For the quarter ended April 1, 2011, there was no cash flow hedging activity.

As of March 30, 2012 and April 1, 2011, the Company had balances for contracts not designated as hedging instruments of $0.4 million and $0.4 million, which was classified as other assets. Additionally, as of April 1, 2011, the Company had liability balances for contracts not designated as hedging instruments of $0.7 million, which were classified as other liabilities.

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Financial Instruments (Schedule Of Net Foreign Exchange Positions) (Details) (USD $) In Millions, unless otherwise specified	Mar. 30, 2012	Dec. 31, 2011
Financial Instruments [Line Items]
Buy (Sell)	$ (78.8)	$ (106.6)
Notional Amount of Foreign Currency Derivatives	170.2	203.4
Chinese Renminbi [Member]
Financial Instruments [Line Items]
Buy (Sell)	(8.4)	(12.8)
Notional Amount of Foreign Currency Derivatives	8.4	12.8
Euro [Member]
Financial Instruments [Line Items]
Buy (Sell)	(38.2)	(30.8)
Notional Amount of Foreign Currency Derivatives	38.2	30.8
Japanese Yen [Member]
Financial Instruments [Line Items]
Buy (Sell)	(68.5)	(100.0)
Notional Amount of Foreign Currency Derivatives	68.5	100.0
Malaysian Ringgit [Member]
Financial Instruments [Line Items]
Buy (Sell)	29.4	29.4
Notional Amount of Foreign Currency Derivatives	29.4	29.4
Other Currencies [Member]
Financial Instruments [Line Items]
Buy (Sell)	6.9	7.6
Notional Amount of Foreign Currency Derivatives	$ 25.7	$ 30.4

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Segment Information (Narrative) (Details)	3 Months Ended
	Mar. 30, 2012 segment	Apr. 01, 2011
Segment Information [Abstract]
Number of customers with greater than ten percent of total revenue	0	0
Number of segments	4
Customers' revenue as percentage of total revenue	10.00%	10.00%

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Financial Instruments (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2012	Apr. 01, 2011	Dec. 31, 2011
Derivatives, Fair Value [Line Items]
Notional Amount	$ 170.2		$ 203.4
Realized and unrealized foreign currency transaction gain/losses	4.7	(2.5)
Notional amount of outstanding derivatives designated as cash flow hedges	46.0
Other assets	76.8		121.6
Other liabilities	1,214.3		1,275.5
Loss recognized in other comprehensive income	0.4
Cash Flow Hedging [Member]
Derivatives, Fair Value [Line Items]
Other liabilities	0.2
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Other assets	0.4	0.4
Other liabilities		$ 0.7

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Background And Basis Of Presentation (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Apr. 01, 2011
Gain on SANYO Semiconductor acquisition	$ 24.3
As Revised [Member]
Gain on SANYO Semiconductor acquisition	24.3
As Reported [Member]
Gain on SANYO Semiconductor acquisition	$ 61.3

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Earnings Per Share And Equity (Income Per Share Calculations) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 30, 2012	Apr. 01, 2011
Earnings Per Share And Equity [Abstract]
Net income applicable to ON Semiconductor Corporation	$ 28.2	$ 35.5
Basic weighted average common shares outstanding	452.5	441.4
Dilutive effect of stock options and awards	5.1	10.8
Dilutive effect of convertible notes	3.0	3.8
Diluted weighted average common shares outstanding	460.6	456.0
Basic	$ 0.06	$ 0.08
Diluted	$ 0.06	$ 0.08

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Background And Basis Of Presentation (Tables)

3 Months Ended

Mar. 31, 2012

Background And Basis Of Presentation [Abstract]

Schedule Of The Consolidated Statement Of Comprehensive Income Adjustments

	For the Quarter Ended April 1, 2011
	As reported			As revised
Other income (expenses), net:
Other	$	(0.2	)	$	(2.5	)
Gain on SANYO Semiconductor acquisition		61.3			24.3
Net income attributable to ON Semiconductor Corporation	$	74.8		$	35.5
Net income per common share attributable to ON Semiconductor Corporation
Basic	$	0.17		$	0.08
Diluted	$	0.16		$	0.08

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Earnings Per Share And Equity (Tables)

3 Months Ended

Mar. 30, 2012

Earnings Per Share And Equity [Abstract]

Income Per Share Calculations

	Quarter Ended
	March 30, 2012		April 1, 2011
Net income applicable to ON Semiconductor Corporation	$	28.2	$	35.5
Basic weighted average common shares outstanding		452.5		441.4
Add: Incremental shares for:
Dilutive effect of stock options and awards		5.1		10.8
Dilutive effect of convertible notes		3.0		3.8
Diluted weighted average common shares outstanding		460.6		456.0
Net income per common share attributable to ON Semiconductor Corporation
Basic:	$	0.06	$	0.08
Diluted:	$	0.06	$	0.08

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Long-Term Debt (Annual Maturities Relating To Long-Term Debt) (Details) (USD $) In Millions, unless otherwise specified	Mar. 30, 2012
Long-Term Debt [Abstract]
Remainder of 2012	$ 353.7
2013	328.6
2014	75.3
2015	63.5
2016	262.2
Thereafter	153.6
Total	$ 1,236.9

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Restructuring, Asset Impairments And Other, Net (Reconciliation Of "Restructuring, Asset Impairments And Other, Net" Caption On The Consolidated Statement Of Operations) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2012
Restructuring Cost and Reserve [Line Items]
Restructuring	$ 7.3
Other	4.2
Total	11.5
Restructuring Activities Related To 2011 Thailand Closure [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring	1.5
Other	1.8
Total	3.3
Restructuring Activities Related To 2011 Aizu Closure [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring	5.8
Other	0.1
Total	5.9
Restructuring Activities Related To The 2011 SANYO Semiconductor Acquisition [Member]
Restructuring Cost and Reserve [Line Items]
Other	2.3
Total	$ 2.3

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Consolidated Statement Of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2012	Apr. 01, 2011
Cash flows from operating activities:
Net income	$ 29.0	$ 36.2
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	61.1	52.8
Gain on sale and disposal of fixed assets	(1.5)	(2.1)
Non-cash manufacturing expenses associated with favorable supply agreement		50.0
Gain on acquisition of SANYO Semiconductor		(24.3)
Amortization of debt issuance costs and debt discount	0.5	0.6
Provision for excess inventories	15.8	1.7
Non-cash stock compensation expense	7.4	10.4
Non-cash interest	7.2	8.7
Deferred income taxes	3.2	3.2
Other	(0.5)	(1.0)
Changes in assets and liabilities (exclusive of the impact of acquisitions):
Receivables	27.3	(36.0)
Inventories	(23.2)	24.7
Other assets	30.2	25.1
Accounts payable	(81.2)	(18.3)
Accrued expenses	13.1	(29.3)
Income taxes payable	(4.7)	(3.0)
Accrued interest	3.5	3.7
Deferred income on sales to distributors	(18.5)	20.0
Other long-term liabilities	(0.3)	2.5
Net cash provided by operating activities	68.4	125.6
Cash flows from investing activities:
Purchases of property, plant and equipment	(50.4)	(88.7)
Purchase of businesses, net of cash acquired		(57.6)
Proceeds from sales of property, plant and equipment	1.9
Deposits utilized for purchases of property, plant and equipment	(9.6)
Recovery from insurance on property, plant and equipment	11.5
Proceeds from held-to-maturity securities	99.7
Purchase of held-to-maturity securities	(163.3)
Change in restricted cash		142.1
Net cash used in investing activities	(110.2)	(4.2)
Cash flows from financing activities:
Proceeds from issuance of common stock under the employee stock purchase plan		1.9
Proceeds from debt issuance	2.0	15.2
Proceeds from exercise of stock options	4.8	41.1
Payment of capital lease obligation	(11.4)	(9.9)
Purchase of treasury stock	(5.3)	(7.6)
Repayment of long-term debt	(15.6)	(19.6)
Net cash (used in) provided by financing activities	(25.5)	21.1
Effect of exchange rate changes on cash and cash equivalents	(5.5)	0.2
Net (decrease) increase in cash and cash equivalents	(72.8)	142.7
Cash and cash equivalents, beginning of period	652.9	623.3
Cash and cash equivalents, end of period	$ 580.1	$ 766.0

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Balance Sheet Information

3 Months Ended

Mar. 30, 2012

Balance Sheet Information [Abstract]

Balance Sheet Information

Note 5: Balance Sheet Information

	March 30, 2012			December 31, 2011
	(in millions)			(in millions)
Receivables, net:
Accounts receivable	$	431.6		$	464.3
Less: Allowance for doubtful accounts		(6.3	)		(7.1	)
	$	425.3		$	457.2
Inventories:
Raw materials	$	61.8		$	58.8
Work in process		414.2			430.8
Finished goods		157.7			147.8
	$	633.7		$	637.4
Property, plant and equipment, net:
Land	$	74.3		$	76.6
Buildings		537.7			539.3
Machinery and equipment		1,997.6			1,943.0
Total property, plant and equipment		2,609.6			2,558.9
Less: Accumulated depreciation		(1,454.1	)		(1,449.4	)
	$	1,155.5		$	1,109.5
Accrued expenses:
Accrued payroll	$	127.9		$	125.2
Sales related reserves		53.8			45.5
Restructuring reserves		24.2			17.3
Accrued pension liability		9.8			11.4
Other		22.8			40.4
	$	238.5		$	239.8
Accumulated other comprehensive loss:
Foreign currency translation adjustments	$	(41.6	)	$	(46.5	)
Unrecognized prior service cost of defined benefit pension plan		(0.1	)		(0.2	)
Effect of cash flow hedges		(0.4	)		—
Unrealized gain on available for sale securities		0.5			—
	$	(41.6	)	$	(46.7	)

Included in accumulated other comprehensive loss as of March 30, 2012, and December 31, 2011, is $18.9 million and $18.5 million, respectively, of foreign currency translation gains related to our Aizu, Japan facility. As further described in Note 4: "Restructuring, Asset Impairments and Other, Net," the Company intends to close its Aizu, Japan facility during 2012. After the operational closure is complete, the Company will proceed to liquidate and wind-down the legal entity. As required by accounting standards, when the liquidation is substantially complete, the Company will recognize in results of operations any amount remaining in accumulated other comprehensive income.

Warranty Reserves

The activity related to our warranty reserves for the three months ended March 30, 2012 and April 1, 2011, respectively, is as follows (in millions):

	Quarter Ended
	March 30, 2012			April 1, 2011
Beginning Balance	$	5.8		$	3.3
Provision		0.1			0.6
Usage		(0.2	)		—
Ending Balance	$	5.7		$	3.9

Defined Benefit Plans

The Company maintains defined benefit plans for some of its foreign subsidiaries. The Company recognizes the aggregate amount of all overfunded plans as assets and the aggregate amount of all underfunded plans as liabilities in its financial statements. As of March 30, 2012, the total accrued pension liability for underfunded plans was $67.5 million, of which the current portion of $9.8 million was classified as accrued expenses. As of December 31, 2011, the total accrued pension liability for underfunded plans was $83.3 million, of which the current portion of $11.4 million, was classified as accrued expenses. As of March 30, 2012 and December 31, 2011, the total pension asset for overfunded plans was $12.5 million and $12.4 million, respectively. The components of the Company's net periodic pension expense for the quarters ended March 30, 2012 and April 1, 2011 are as follows (in millions):

	Quarter Ended
	March 30, 2012			April 1, 2011
Service cost	$	2.2		$	2.3
Interest cost		1.3			1.3
Expected return on plan assets		(1.0	)		(1.0	)
Amortization of prior service cost		0.1			0.1
Total net periodic pension cost	$	2.6		$	2.7

Multiemployer Defined Benefit Plans

Included in other long-term liabilities as of March 30, 2012 and December 31, 2011, are the estimated liabilities of $140.1 million and $151.0 million, respectively, which represent the Company's estimated portion of underfunded pension obligations relating to certain employees participating in certain SANYO Electric Co. Ltd., ("SANYO Electric") multiemployer defined benefit pension plans from which the Company intends to withdraw. During the quarters ended March 30, 2012 and April 1, 2011, the Company recorded $2.9 million and $2.9 million, respectively, of expense associated with the Company's participation in the SANYO Electric multiemployer pension plans.

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Commitments And Contingencies (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				0 Months Ended	3 Months Ended
	Mar. 30, 2012	Mar. 19, 2012 employee	Dec. 31, 2011	Dec. 31, 2011 SANYO Electric [Member]	Dec. 27, 2011 SANYO Semiconductor Thailand [Member]	Mar. 30, 2012 SANYO Semiconductor Thailand [Member]	Mar. 30, 2012 Senior Revolving Credit Facility [Member]
Loss Contingencies [Line Items]
Receivable from Nippon Mining	$ 0.1
Credit commitment outstanding	3.6
Guarantee right to mortgage	3.0
Outstanding guarantees and letters of credit	10.1
Guarantees related to capital lease obligations	110.1
Long-term Debt	1,189.0		1,207.0	330.3
Expected operating leases cash payments and expenses total	114.7
Remedial payment on alleged failures of products	20.0
Lawsuit filing date						December 27, 2011
Number of former employees filed complaints					112
Number of additional former employees filed complaints		46				4
Lawsuits alleged damages, value					25.4
Letters of credit outstanding							0.2
Letters of credit capacity							$ 40.0

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Segment Information (Revenues By Geographic Location Including Local Sales And Exports) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2012	Apr. 01, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 744.4	$ 870.6
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	111.3	127.2
Other Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	9.4	6.2
United Kingdom [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	105.8	109.9
Belgium [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	0.1	0.9
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	218.3	269.9
Japan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	115.2	125.4
Singapore [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	143.5	170.8
Other Asia/Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 40.8	$ 60.3

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Share-Based Compensation (Tables)

3 Months Ended

Mar. 30, 2012

Share-Based Compensation [Abstract]

Summary Of Share-Based Compensation Expense

	Quarter Ended
	March 30, 2012		April 1, 2011
Cost of revenues	$	1.4	$	1.9
Research and development		1.6		2.0
Selling and marketing		1.6		1.9
General and administrative		2.8		4.6
Share-based compensation expense before income taxes	$	7.4	$	10.4
Related income tax benefits (1)		—		—
Share-based compensation expense, net of taxes	$	7.4	$	10.4

(1) Most of the Company's share-based compensation relates to its domestic subsidiaries, which have historically experienced recurring net operating losses; therefore, no related tax benefits are recorded.

Weighted-Average Assumptions Of Employee Stock Options

	Quarter Ended
	March 30, 2012		April 1, 2011
Volatility		46.7%		41.0%
Risk-free interest rate		0.9%		2.1%
Expected term		4.8 years		4.9 years

Summary Of Stock Option Plans

	Quarter Ended March 30, 2012
	Number of Shares			Weighted-Average Exercise Price		Weighted Average Remaining Contractual Term (in years)		Aggregate Intrinsic Value (In-The-Money)
Outstanding at December 31, 2011		18.7		$	7.70
Granted		1.4			8.40
Exercised		(0.9	)		4.99
Canceled		(0.2	)		7.63
Outstanding at March 30, 2012		19.0		$	7.88		4.6	$	29.8
Exercisable at March 30, 2012		14.8			7.84		4.1	$	25.2

Additional Information On Stock Options Outstanding

	Exercisable				Unexercisable				Total
Exercise Prices	Number of Shares		Weighted Average Exercise Price		Number of Shares		Weighted Average Exercise Price		Number of Shares		Weighted Average Exercise Price
Less than $9.01		8.5	$	6.04		3.5	$	7.74		12.0	$	6.54
Above $9.01		6.3	$	10.28		0.7	$	9.73		7.0	$	10.22
Total Outstanding		14.8	$	7.84		4.2	$	8.07		19.0	$	7.88

Summary Of Restricted Stock Units Transactions

	Quarter Ended March 30, 2012
	Number of Shares			Weighted-Average Grant Date Fair Value
Nonvested shares of restricted stock units at December 31, 2011		9.6		$	7.95
Granted		3.1			8.40
Released		(2.0	)		5.75
Forfeited		(0.1	)		8.69
Nonvested shares of restricted stock units at March 30, 2012		10.6		$	8.49

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Goodwill And Intangible Assets (Summary Of Intangible Assets, Net) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 30, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]
Original Cost	$ 500.6	$ 500.6
Accumulated Amortization	(140.3)	(129.2)
Foreign Currency Translation Adjustment	(26.8)	(26.5)
Impairment	(7.7)	(7.7)
Carrying Value	325.8	337.2
Intellectual Property [Member]
Finite-Lived Intangible Assets [Line Items]
Original Cost	13.9	13.9
Accumulated Amortization	(8.2)	(8.0)
Carrying Value	5.7	5.9
Useful life, minimum (in years)	5	5
Useful Life, Maximum (in Years)	12	12
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Original Cost	280.3	280.3
Accumulated Amortization	(77.0)	(71.9)
Foreign Currency Translation Adjustment	(26.8)	(26.5)
Impairment	(3.2)	(3.2)
Carrying Value	173.3	178.7
Useful life, minimum (in years)	5	5
Useful Life, Maximum (in Years)	18	18
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Original Cost	43.7	43.7
Accumulated Amortization	(12.0)	(10.4)
Carrying Value	31.7	33.3
Useful Life (in Years)	12	12
Developed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Original Cost	146.2	145.6
Accumulated Amortization	(39.2)	(35.5)
Impairment	(2.0)	(2.0)
Carrying Value	105.0	108.1
Useful life, minimum (in years)	5	5
Useful Life, Maximum (in Years)	12	12
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Original Cost	14.0	14.0
Accumulated Amortization	(3.9)	(3.4)
Carrying Value	10.1	10.6
Useful Life (in Years)	15	15
In-Process Research And Development [Member]
Finite-Lived Intangible Assets [Line Items]
Original Cost	2.5	3.1
Impairment	(2.5)	(2.5)
Carrying Value		$ 0.6

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Subsequent Events

3 Months Ended

Mar. 30, 2012

Subsequent Events [Abstract]

Subsequent Events

Note 15: Subsequent Events

Retirement of the Zero Coupon Convertible Senior Subordinated Notes due 2024

On April 16, 2012, the Company exercised its call option relating to its Zero Coupon Convertible Senior Subordinated Notes due 2024. As a result, the Company paid the gross principal amount of approximately $96.2 million to the holders of the notes and retired the outstanding obligation.

Voluntary Retirement Program at SANYO Semiconductor Subsidiaries

On April 13, 2012 the Company initiated a voluntary retirement program for employees of certain of its SANYO Semiconductor subsidiaries. Under the program, the Company intends to reduce the employment levels at these subsidiaries by up to approximately 500 employees. The ultimate cost of the program will depend on several factors, including the years of service and salary levels of employees that apply for early retirement under the program. Given the voluntary nature of the program, the costs associated with the program will be recorded when the retirement offer is accepted by the impacted employees. The Company estimates recording a charge ranging from $40.0 million to $50.0 million related to this program during the second quarter of 2012. This estimated charge excludes amounts related to the pension benefit impact that may be recognized subsequent to the employees' retirement. The Company's pension and related benefit plans allow for benefit payment elections by the employee and the Company's pension liability balances reflect actuarial assumptions related to these elections. As these employees make their actual elections at retirement, the pension obligation will be determined and as a result the Company will record an adjustment to the pension liability to reflect the impact of employee elections as compared to the actuarial assumptions. Accordingly, the Company cannot reasonably estimate the related impact until the employee elections are known.