10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

ý Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the quarterly period ended April 4, 2015

or

¨ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Commission File Number 001-14423

PLEXUS CORP.

(Exact name of registrant as specified in charter)

Wisconsin	39-1344447
(State of Incorporation)	(IRS Employer Identification No.)

One Plexus Way

Neenah, Wisconsin 54957

(Address of principal executive offices)(Zip Code)

Telephone Number (920) 969-6000

(Registrant’s telephone number, including Area Code)

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

As of May 7, 2015, there were 33,604,834 shares of Common Stock of the Company outstanding.

PLEXUS CORP.

TABLE OF CONTENTS

April 4, 2015

PART I. FINANCIAL INFORMATION	3
ITEM 1. FINANCIAL STATEMENTS	3
Condensed Consolidated Statements of Comprehensive Income	3
Condensed Consolidated Balance Sheets	4
Condensed Consolidated Statements of Cash Flows	5
Notes to Condensed Consolidated Financial Statements	6
ITEM  2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS	15
“Safe Harbor” Cautionary Statement Under the Private Securities Litigation Reform Act of 1995	15
Overview	15
Results of Operations	16
Reportable Segments	20
Liquidity and Capital Resources	21
Contractual Obligations, Commitments and Off-Balance Sheet Obligations	23
Disclosure About Critical Accounting Policies	23
New Accounting Pronouncements	24
ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK	25
ITEM 4. CONTROLS AND PROCEDURES	26
PART II. OTHER INFORMATION	27
ITEM 1A. Risk Factors	27
ITEM 2. Unregistered Sales of Equity Securities and Use Of Proceeds	27
ITEM 6. Exhibits	28
SIGNATURES	29

2

PART I.     FINANCIAL INFORMATION

ITEM 1.    FINANCIAL STATEMENTS

PLEXUS CORP. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(in thousands, except per share data)

Unaudited

	Three Months Ended						Six Months Ended
	April 4, 2015			March 29, 2014			April 4, 2015			March 29, 2014
Net sales	$	651,285		$	557,616		$	1,315,975		$	1,091,521
Cost of sales	591,508			504,781			1,194,784			987,184
Gross profit	59,777			52,835			121,191			104,337
Selling and administrative expenses	30,325			27,790			61,266			53,926
Restructuring costs	—			6,045			1,691			9,650
Operating income	29,452			19,000			58,234			40,761
Other income (expense):
Interest expense	(3,383		)	(3,082		)	(7,160		)	(5,896		)
Interest income	788			683			1,686			1,322
Miscellaneous	(60		)	671			78			911
Income before income taxes	26,797			17,272			52,838			37,098
Income tax expense (benefit)	3,203			(1,244		)	6,165			919
Net income	$	23,594		$	18,516		$	46,673		$	36,179
Earnings per share:
Basic	$	0.70		$	0.55		$	1.39		$	1.07
Diluted	$	0.69		$	0.53		$	1.36		$	1.04
Weighted average shares outstanding:
Basic	33,606			33,868			33,604			33,799
Diluted	34,342			34,703			34,391			34,698
Comprehensive income:
Net income	$	23,594		$	18,516		$	46,673		$	36,179
Other comprehensive (loss) income:
Derivative instrument fair value adjustment —net of income tax	(1,314		)	1,386			(5,958		)	863
Foreign currency translation adjustments	(1,366		)	(2,901		)	(6,727		)	(480		)
Other comprehensive (loss) income	(2,680		)	(1,515		)	(12,685		)	383
Total comprehensive income	$	20,914		$	17,001		$	33,988		$	36,562

See notes to Condensed Consolidated Financial Statements.

3

PLEXUS CORP. AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

(in thousands, except per share data)

Unaudited

	April 4, 2015			September 27, 2014
ASSETS
Current assets:
Cash and cash equivalents	$	356,296		$	346,591
Accounts receivable, net of allowances of $1,252 and $1,188, respectively	342,163			324,072
Inventories	557,040			525,970
Deferred income tax	6,411			6,449
Prepaid expenses and other	26,929			27,757
Total current assets	1,288,839			1,230,839
Property, plant and equipment, net	323,722			334,926
Deferred income tax	3,506			3,675
Other	40,082			39,586
Total non-current assets	367,310			378,187
Total assets	$	1,656,149		$	1,609,026
LIABILITIES AND SHAREHOLDERS’ EQUITY
Current liabilities:
Current portion of long-term debt and capital lease obligations	$	4,774		$	4,368
Accounts payable	407,428			396,363
Customer deposits	75,830			56,155
Deferred income tax	560			647
Accrued liabilities:
Salaries and wages	39,736			52,043
Other	40,096			37,739
Total current liabilities	568,424			547,315
Long-term debt, capital lease obligations and other financing, net of current portion	260,025			262,046
Deferred income tax	5,190			5,191
Other liabilities	14,042			13,341
Total non-current liabilities	279,257			280,578
Total liabilities	847,681			827,893
Shareholders’ equity:
Preferred stock, $.01 par value, 5,000 shares authorized, none issued or outstanding	—			—
Common stock, $.01 par value, 200,000 shares authorized, 50,284 and 49,962 shares issued, respectively, and 33,595 and 33,653 shares outstanding, respectively	503			500
Additional paid-in capital	483,960			475,634
Common stock held in treasury, at cost, 16,689 and 16,309 shares, respectively	(494,950		)	(479,968		)
Retained earnings	813,058			766,385
Accumulated other comprehensive income	5,897			18,582
Total shareholders’ equity	808,468			781,133
Total liabilities and shareholders’ equity	$	1,656,149		$	1,609,026

See notes to Condensed Consolidated Financial Statements.

4

PLEXUS CORP. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

Unaudited

	Six Months Ended
	April 4, 2015			March 29, 2014
Cash flows from operating activities
Net income	$	46,673		$	36,179
Adjustments to reconcile net income to cash flows from operating activities:
Depreciation	24,602			23,345
Amortization of intangibles	—			603
Gain on sale of property, plant and equipment	(88		)	(254		)
Deferred income tax net expense (benefit)	108			(83		)
Stock-based compensation expense	7,095			5,907
Non-cash impairment	—			3,160
Changes in operating assets and liabilities:
Accounts receivable	(20,755		)	3,679
Inventories	(34,473		)	(58,381		)
Other current and noncurrent assets	(5,701		)	(3,533		)
Accounts payable	9,436			37,422
Customer deposits	20,148			(25,448		)
Other current and noncurrent liabilities	(6,331		)	(2,901		)
Cash flows provided by operating activities	40,714			19,695
Cash flows from investing activities
Payments for property, plant and equipment	(16,675		)	(30,635		)
Proceeds from sales of property, plant and equipment	103			356
Cash flows used in investing activities	(16,572		)	(30,279		)
Cash flows from financing activities
Proceeds from debt issuance	252,000			121,000
Payments on debt and capital lease obligations	(254,332		)	(122,787		)
Repurchases of common stock	(14,982		)	(14,557		)
Proceeds from exercise of stock options	3,946			10,833
Minimum tax withholding related to vesting of restricted stock	(2,712		)	(1,567		)
Cash flows used in financing activities	(16,080		)	(7,078		)
Effect of exchange rate changes on cash and cash equivalents	1,643			(508		)
Net increase (decrease) in cash and cash equivalents	9,705			(18,170		)
Cash and cash equivalents:
Beginning of period	346,591			341,865
End of period	$	356,296		$	323,695

See notes to Condensed Consolidated Financial Statements.

5

PLEXUS CORP. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

FOR THE THREE AND SIX MONTHS ENDED APRIL 4, 2015 AND MARCH 29, 2014

Unaudited

1.    Basis of Presentation and Significant Accounting Policies

Basis of Presentation

The accompanying Condensed Consolidated Financial Statements included herein have been prepared by Plexus Corp. and its subsidiaries (together “Plexus” or the “Company”) without audit and pursuant to the rules and regulations of the United States (“U.S.”) Securities and Exchange Commission (“SEC”). In the opinion of the Company, the accompanying Condensed Consolidated Financial Statements reflect all adjustments, which include normal recurring adjustments necessary for the fair statement of the consolidated financial position of the Company as of April 4, 2015 and September 27, 2014, and the results of operations for the three and six months ended April 4, 2015 and March 29, 2014, and the cash flows for the same six month periods.

Certain information and footnote disclosures, normally included in financial statements prepared in accordance with generally accepted accounting principles, have been condensed or omitted pursuant to the SEC’s rules and regulations dealing with interim financial statements. However, the Company believes that the disclosures made in the Condensed Consolidated Financial Statements included herein are adequate to make the information presented not misleading. It is suggested that these Condensed Consolidated Financial Statements be read in conjunction with the Consolidated Financial Statements and notes thereto included in the Company’s 2014 Annual Report on Form 10-K.

The Company’s reportable segments consist of the “Americas” (“AMER”) segment, “Asia-Pacific” (“APAC”) segment and “Europe, Middle East, and Africa” (“EMEA”) segment. Refer to Note 10, "Reportable Segments," for further details on reportable segments.

Cash and Cash Equivalents

Cash and cash equivalents include highly liquid investments with original maturities of three months or less at the time of purchase and are classified as Level 1 in the fair value hierarchy described below.

Fair Value of Financial Instruments

The Company holds financial instruments consisting of cash and cash equivalents, accounts receivable, accounts payable, debt, derivatives, and capital lease obligations. The carrying values of cash and cash equivalents, accounts receivable, accounts payable, and capital lease obligations as reported in the Condensed Consolidated Financial Statements approximate fair value. Derivatives are recorded at fair value. Accounts receivable are reflected at net realizable value based on anticipated losses due to potentially uncollectible balances. Anticipated losses are based on management’s analysis of historical losses and changes in customers’ credit status. The fair value of the Company’s long-term debt was $251.7 million and $247.5 million as of April 4, 2015 and September 27, 2014, respectively. The carrying value of the Company’s long-term debt was $250.0 million as of both the periods ended April 4, 2015 and September 27, 2014. The Company uses quoted market prices when available or discounted cash flows to calculate the fair value of its debt. If measured at fair value in the financial statements, long-term debt (including the current portion) would be classified as Level 2 in the fair value hierarchy described below. Refer to Note 5, "Derivatives and Fair Value Measurements," for further details on derivatives.

Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (or exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. The accounting guidance establishes a fair value hierarchy based on three levels of inputs that may be used to measure fair value. The input levels are:

Level 1: Quoted (observable) market prices in active markets for identical assets or liabilities.

Level 2: Inputs other than Level 1 that are observable, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the asset or liability.

Level 3: Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the asset or liability.

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2.    Inventories

Inventories as of April 4, 2015 and September 27, 2014 consisted of (in thousands):

	April 4, 2015		September 27, 2014
Raw materials	$	392,553	$	371,641
Work-in-process	86,903		76,531
Finished goods	77,584		77,798
	$	557,040	$	525,970

Per contractual terms, customer deposits are received by the Company to offset obsolete and excess inventory risks. The total amount of customer deposits related to inventory and included within current liabilities on the accompanying Condensed Consolidated Balance Sheets as of April 4, 2015 and September 27, 2014 was $58.5 million and $51.0 million, respectively.

3.    Property, Plant and Equipment

Property, plant and equipment as of April 4, 2015 and September 27, 2014 consisted of (in thousands):

	April 4, 2015		September 27, 2014
Land, buildings and improvements	$	278,422	$	283,569
Machinery and equipment	327,286		331,981
Computer hardware and software	97,346		95,780
Construction in progress	15,069		9,694
	718,123		721,024
Less: accumulated depreciation	394,401		386,098
	$	323,722	$	334,926

4.    Debt, Capital Lease Obligations and Other Financing

Debt, capital lease obligations and other financing amounts outstanding at April 4, 2015 and September 27, 2014 are summarized below (in thousands):

	April 4, 2015		September 27, 2014
5.20% Senior Notes, due June 15, 2018	$	175,000	$	175,000
Borrowings under revolving credit facility, due May 15, 2019	75,000		75,000
Capital lease obligations	6,689		8,414
Other financing obligation	8,110		8,000
Total debt, capital lease obligations, and other financing	264,799		266,414
Less current portion of debt, capital lease obligations, and other financing	4,774		4,368
Total debt, capital lease obligations, and other financing, less current portion	$	260,025	$	262,046

On May 15, 2014, the Company entered into an amendment (the "Amendment") to its credit agreement, dated as of May 15, 2012 (as amended, the "Credit Agreement"), related to its five-year senior unsecured credit facility (the “Credit Facility”). As a result of the Amendment, the Credit Facility, which was formerly a $250.0 million facility consisting of a $160.0 million revolving credit facility and a $90.0 million term loan (balance of $75.0 million as of May 15, 2014), was converted into a $235.0 million revolving credit facility, and its termination date was extended from May 15, 2017 to May 15, 2019. The Credit Facility may potentially be increased by $100.0 million to $335.0 million generally by mutual agreement of the Company and the lenders, subject to certain customary conditions. For the six months ended April 4, 2015, the Company borrowed and then repaid $252.0 million of revolving borrowings under the Credit Facility.

Borrowings under the Credit Facility, at the Company's option, bear interest at a defined base rate or the LIBOR rate plus, in each case, an applicable margin based upon the Company's leverage ratio as defined in the Credit Agreement. Rates would

7

increase upon negative changes in specified Company financial metrics and would decrease to no less than LIBOR plus 1.00% or base rate plus 0.00% upon reduction in the current total leverage ratio. As of April 4, 2015, the Company had a borrowing rate of LIBOR plus 1.13%. As of April 4, 2015, all outstanding debt under the Credit Facility is effectively at a fixed interest rate as a result of the interest rate swap contract discussed in Note 5, "Derivatives and Fair Value Measurements." The Company is required to pay a commitment fee based on the company's leverage ratio for the unused portion of the revolving credit facility. The fee is paid quarterly based on the prior quarter weighted average available revolving commitment. This rate was 0.2% as of April 4, 2015.

The Company also has outstanding 5.20% Senior Notes, due on June 15, 2018 (the “Notes”); $175.0 million principal of the Notes was outstanding as of both April 4, 2015 and September 27, 2014.

The Notes and borrowings under the Credit Facility are carried at the principal amount outstanding. Other financing obligations of $8.1 million and $8.0 million for the period ending April 4, 2015 and September 27, 2014, respectively, relate to a non-cash financing transaction for the Company's facility in Guadalajara, Mexico.

5.    Derivatives and Fair Value Measurements

All derivatives are recognized in the accompanying Condensed Consolidated Balance Sheets at their estimated fair value. The Company uses derivatives to manage the variability of foreign currency obligations and interest rates. The Company has cash flow hedges related to variable rate debt and forecasted foreign currency obligations, in addition to fair value hedges to manage foreign currency exposures associated with certain foreign currency denominated assets and liabilities. The Company does not enter into derivatives for speculative purposes. Changes in the fair value of the derivatives that qualify as cash flow hedges are recorded in “Accumulated other comprehensive income” in the accompanying Condensed Consolidated Balance Sheets until earnings are affected by the variability of the cash flows. Changes in the fair value of the derivatives related to recognized foreign currency denominated assets and liabilities are recorded in "Other income (expense)" in the accompanying Condensed Consolidated Statements of Comprehensive Income.

The Company enters into forward currency exchange contracts on a rolling basis. The Company had cash flow hedges outstanding with a notional value of $66.0 million as of April 4, 2015 and a notional value of $64.6 million as of September 27, 2014. These forward currency contracts fix the exchange rates for the settlement of future foreign currency obligations that have yet to be realized. The total fair value of the cash flow hedges was a $4.4 millionliability as of April 4, 2015 and a $0.8 millionasset as of September 27, 2014.

The Company had additional forward currency exchange contracts outstanding with a notional value of $4.8 million as of April 4, 2015 and a notional value of $37.9 million as of September 27, 2014. The Company has not designated these derivative instruments as hedging instruments. The net settlement amount (fair value) related to these contracts is recorded on the Condensed Consolidated Balance Sheets as either a current or long-term asset or liability, depending on the term, and as an element of other income (expense). The total fair value of these derivatives was less than a $0.1 million liability as of April 4, 2015 and a $1.5 million asset as of September 27, 2014.

On June 4, 2013, the Company entered into a $75.0 million notional amount interest rate swap contract which expires on May 5, 2017, related to $75.0 million of borrowings outstanding under its Credit Facility. This interest rate swap pays the Company variable interest at the one month LIBOR rate, and the Company pays the counterparty a fixed interest rate. The fixed interest rate for the contract is 0.875%. Based on the terms of the interest rate swap contract and the underlying borrowings outstanding under the Credit Facility, the interest rate contract was determined to be effective, and thus qualifies as a cash flow hedge. As such, any changes in the fair value of the interest rate swap are recorded in “Accumulated other comprehensive income” on the accompanying Condensed Consolidated Balance Sheets until earnings are affected by the variability of cash flows. The total fair value of the interest rate swap contract was a $0.4 million liability as of April 4, 2015 and a $0.2 million asset as of September 27, 2014. The notional amount of the Company’s interest rate swap was $75.0 million as of both April 4, 2015 and September 27, 2014.

The tables below present information regarding the fair values of derivative instruments (as defined in Note 1, "Basis of Presentation and Significant Accounting Policies") and the effects of derivative instruments on the Company’s Condensed Consolidated Financial Statements:

8

Fair Values of Derivative Instruments
In thousands of dollars
	Asset Derivatives					Liability Derivatives
		April 4, 2015		September 27, 2014			April 4, 2015		September 27, 2014
Derivatives designated as hedging instruments	Balance Sheet Classification	Fair Value		Fair Value		Balance Sheet Classification	Fair Value		Fair Value
Interest rate swaps	Prepaid expenses and other	$	—	$	182	Current liabilities – other	$	420	$	—
Forward contracts	Prepaid expenses and other	$	—	$	812	Current liabilities – other	$	4,373	$	—

Fair Values of Derivative Instruments
In thousands of dollars
	Asset Derivatives					Liability Derivatives
		April 4, 2015		September 27, 2014			April 4, 2015		September 27, 2014
Derivatives not designated as hedging instruments	Balance Sheet Classification	Fair Value		Fair Value		Balance Sheet Classification	Fair Value		Fair Value
Forward contracts	Prepaid expenses and other	$	—	$	1,512	Current liabilities – other	$	31	$	—

The Effect of Derivative Instruments on the Condensed Consolidated Statements of Comprehensive Income
for the Three Months Ended
In thousands of dollars
Derivatives in Cash Flow Hedging Relationships	Amount of Gain (Loss) Recognized in Other Comprehensive Income (“OCI”) on Derivative (Effective Portion)						Classification of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)						Classification of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)
	April 4, 2015			March 29, 2014				April 4, 2015			March 29, 2014				April 4, 2015		March 29, 2014
Interest rate swaps	$	(563	)	$	(77	)	Interest expense	$	(133	)	$	(133	)	Other income (expense)	$	—	$	—
Forward contracts	$	(1,922	)	$	643		Selling and administrative expenses	$	(1,115	)	$	(790	)	Other income (expense)	$	—	$	—
Treasury rate locks	$	—		$	—		Interest income	$	81		$	81		Other income (expense)	$	—	$	—
Income tax	$	—		$	—		Income tax (benefit) expense	$	(4	)	$	22		Income tax (benefit) expense	$	—	$	—

9

The Effect of Derivative Instruments on the Condensed Consolidated Statements of Comprehensive Income
for the Six Months Ended
In thousands of dollars
Derivatives in Cash Flow Hedging Relationships	Amount of Gain (Loss) Recognized in Other Comprehensive Income (“OCI”) on Derivative (Effective Portion)						Classification of  Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)						Classification of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded  from Effectiveness Testing)	Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)
	April 4, 2015			March 29, 2014				April 4, 2015			March 29, 2014				April 4, 2015		March 29, 2014
Interest rate swaps	$	(873	)	$	(108	)	Interest expense	$	(270	)	$	(265	)	Other income (expense)	$	—	$	—
Forward contracts	$	(6,178	)	$	(100	)	Selling and administrative expenses	$	(990	)	$	(1,040	)	Other income (expense)	$	—	$	—
Treasury rate locks	$	—		$	—		Interest income	$	167		$	160		Other income (expense)	$	—	$	—
Income tax	$	—		$	—		Income tax (benefit) expense	$	—		$	74		Income tax (benefit) expense	$	—	$	—

The following table lists the fair values of assets (liabilities) of the Company’s derivatives as of April 4, 2015 and September 27, 2014, by input level as defined in Note 1 (in thousands):

	Level 1		Level 2			Level 3		Total
April 4, 2015
Interest rate swaps	$	—	$	(420	)	$	—	$	(420	)
Foreign currency forward contracts	$	—	$	(4,404	)	$	—	$	(4,404	)
September 27, 2014
Interest rate swaps	$	—	$	182		$	—	$	182
Foreign currency forward contracts	$	—	$	2,324		$	—	$	2,324

The fair value of interest rate swaps and foreign currency forward contracts is determined using a market approach that includes obtaining directly or indirectly observable values from third parties active in the relevant markets. The primary input in the fair value of the interest rate swaps is the relevant LIBOR forward curve. Inputs in the fair value of the foreign currency forward contracts include prevailing forward and spot prices for currency and interest rate forward curves.

6.    Income Taxes

Income tax expense for the three and six months ended April 4, 2015 was $3.2 million and $6.2 million, respectively. The effective tax rates for the three and six months ended April 4, 2015 were 12.0 percent and 11.7 percent, respectively, as compared to (7.2) percent and 2.5 percent for the three and six months ended March 29, 2014, respectively.

The change in the effective tax rate for the three and six months ended April 4, 2015 as compared to the three and six months ended March 29, 2014, was primarily the result of a net $3.7 million discrete tax benefit that occurred in the second quarter of fiscal 2014, largely related to the completion of U.S. federal and state audits. Without these discrete benefits, the effective tax rates would have been 14.4 percent and 12.8 percent for the three and six months ended March 29, 2014, respectively.

The reduction in the effective tax rates for the three and six months ended April 4, 2015 compared with the adjusted effective tax rates for the three and six months ended March 29, 2014 is largely attributed to increased earnings in low-tax jurisdictions and jurisdictions where the Company maintains valuation allowances due to historical tax losses. As demonstrated in recent quarters, the Company's effective tax rate fluctuates depending on the geographic distribution of its worldwide earnings.

There were no material additions to the amount of unrecognized tax benefits recorded for uncertain tax positions as of April 4, 2015 as compared to September 27, 2014. The Company recognizes accrued interest and penalties related to the remaining uncertain tax positions in income tax expense. The amount of interest and penalties recorded for both the three and six months ended April 4, 2015 was not material.

10

It is reasonably possible that a number of uncertain tax positions related to federal and state tax positions may be settled within the next 12 months. The Company is not currently under examination by taxing authorities in the U.S. or any foreign jurisdictions in which the Company has significant operations.

The Company maintains valuation allowances when it is more likely than not that all or a portion of a net deferred tax asset will not be realized. During the three and six months ended April 4, 2015, the Company continued to record a full valuation allowance against its net deferred tax assets in certain jurisdictions within the AMER and EMEA segments, as it is more likely than not that these assets will not be fully realized based primarily on historical performance. The Company will continue to provide a valuation allowance against its net deferred tax assets in each of the applicable jurisdictions going forward until the need for a valuation allowance is eliminated. The need for a valuation allowance will be eliminated when the Company determines it is more likely than not that the deferred tax assets will be realized.

7.    Earnings Per Share

The following is a reconciliation of the amounts utilized in the computation of basic and diluted earnings per share for the three and six months ended April 4, 2015 and March 29, 2014 (in thousands, except per share amounts):

	Three Months Ended				Six Months Ended
	April 4, 2015		March 29, 2014		April 4, 2015		March 29, 2014
Basic and Diluted Earnings Per Share:
Net income	$	23,594	$	18,516	$	46,673	$	36,179
Basic weighted average common shares outstanding	33,606		33,868		33,604		33,799
Dilutive effect of share-based awards outstanding	736		835		787		899
Diluted weighted average shares outstanding	34,342		34,703		34,391		34,698
Earnings per share:
Basic	$	0.70	$	0.55	$	1.39	$	1.07
Diluted	$	0.69	$	0.53	$	1.36	$	1.04

For the three and six months ended April 4, 2015, stock options and stock-settled stock appreciation rights ("SARs") for approximately 0.7 million shares, were not included in the computation of diluted earnings per share because the options' and stock-settled SARs' exercise prices were greater than the average market price of the Company's common shares and, therefore, their effect would be anti-dilutive.

For the three and six months ended March 29, 2014, stock options and stock-settled stock appreciation rights ("SARs") for approximately 0.5 million and 0.6 million shares, respectively, were not included in the computation of diluted earnings per share because the options' and stock-settled SARs' exercise prices were greater than the average market price of the Company's common shares and, therefore, their effect would be anti-dilutive.

8.Stock-Based Compensation

The Company recognized $3.4 million and $7.1 million of compensation expense associated with stock-based awards for the three and six months ended April 4, 2015, respectively, and $3.3 million and $5.9 million for the three and six months ended March 29, 2014, respectively

The Company uses the Black-Scholes valuation model to determine the fair value of stock options and stock-settled SARs. The Company uses the fair value at the date of grant to value restricted stock units ("RSUs").

The Company uses the Monte Carlo valuation model to determine the fair value of performance stock units ("PSUs") at the date of grant. The PSUs are payable in shares and vest based on the relative total shareholder return of the Company's common stock as compared to companies in the Russell 3000 Index during a three year performance period. The number of shares that may be issued pursuant to PSUs ranges from zero to 0.1 million. The Company recognizes stock-based compensation expense over the stock-based awards' vesting period.

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9.    Litigation

The Company is party to lawsuits in the ordinary course of business. Management does not believe that these proceedings, individually or in the aggregate, will have a material positive or adverse effect on the Company’s consolidated financial position, results of operations or cash flows.

10.    Reportable Segments

Reportable segments are defined as components of an enterprise about which separate financial information is available that is evaluated regularly by the chief operating decision maker, or group, in assessing performance and allocating resources. The Company uses an internal management reporting system, which provides important financial data to evaluate performance and allocate the Company’s resources on a regional basis. Net sales for segments are attributed to the region in which the product is manufactured or the service is performed. The services provided, manufacturing processes used, class of customers serviced and order fulfillment processes used are similar and generally interchangeable across the segments. A segment’s performance is evaluated based upon its operating income (loss). A segment’s operating income (loss) includes its net sales less cost of sales and selling and administrative expenses, but excludes corporate and other expenses. Corporate and other expenses primarily represent corporate selling and administrative expenses, and restructuring and impairment expenses, if any. These costs are not allocated to the segments, as management excludes such costs when assessing the performance of the segments. Inter-segment transactions are generally recorded at amounts that approximate arm’s length transactions. The accounting policies for the segments are the same as for the Company taken as a whole.

Information about the Company’s three reportable segments for the three and six months ended April 4, 2015 and March 29, 2014, respectively, follows (in thousands):

	Three Months Ended						Six Months Ended
	April 4, 2015			March 29, 2014			April 4, 2015			March 29, 2014
Net sales:
AMER	$	328,753		$	279,271		$	664,015		$	544,280
APAC	319,156			265,582			652,533			535,733
EMEA	35,773			32,240			63,853			59,054
Elimination of inter-segment sales	(32,397		)	(19,477		)	(64,426		)	(47,546		)
	$	651,285		$	557,616		$	1,315,975		$	1,091,521
Operating income (loss):
AMER	$	15,714		$	14,868		$	35,466		$	31,924
APAC	40,989			34,312			82,770			66,254
EMEA	(1,793		)	(1,448		)	(5,624		)	(3,913		)
Corporate expenses and other costs	(25,458		)	(28,732		)	(54,378		)	(53,504		)
	$	29,452		$	19,000		$	58,234		$	40,761
Other income (expense):
Interest expense	$	(3,383	)	$	(3,082	)	$	(7,160	)	$	(5,896	)
Interest income	788			683			1,686			1,322
Miscellaneous	(60		)	671			78			911
Income before income taxes	$	26,797		$	17,272		$	52,838		$	37,098
	April 4, 2015			September 27, 2014
Total assets:
AMER	$	537,201		$	521,259
APAC	948,779			881,426
EMEA	112,068			135,841
Corporate and eliminations	58,101			70,500
	$	1,656,149		$	1,609,026

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11.    Guarantees

The Company offers certain indemnifications under its customer manufacturing agreements. In the normal course of business, the Company may from time to time be obligated to indemnify its customers or its customers’ customers against damages or liabilities arising out of the Company’s negligence, misconduct, breach of contract, or infringement of third party intellectual property rights. Certain agreements have extended broader indemnification, and while most agreements have contractual limits, some do not. However, the Company generally does not provide for such indemnities and seeks indemnification from its customers for damages or liabilities arising out of the Company’s adherence to customers’ specifications or designs or use of materials furnished, or directed to be used, by its customers. The Company does not believe its obligations under such indemnities are material.

In the normal course of business, the Company also provides its customers a limited warranty covering workmanship, and in some cases materials, on products manufactured by the Company. Such warranty generally provides that products will be free from defects in the Company’s workmanship and meet mutually agreed-upon specifications for periods generally ranging from 12 months to 24 months. If a product fails to comply with the Company’s limited warranty, the Company’s obligation is generally limited to correcting, at its expense, any defect by repairing or replacing such defective product. The Company’s warranty generally excludes defects resulting from faulty customer-supplied components, design defects or damage caused by any party or cause other than the Company.

The Company provides for an estimate of costs that may be incurred under its limited warranty at the time product revenue is recognized and establishes additional reserves for specifically identified product issues. These costs primarily include labor and materials, as necessary, associated with repair or replacement and are included in the Company's accompanying Condensed Consolidated Balance Sheets in other current accrued liabilities. The primary factors that affect the Company’s warranty liability include the value and the number of shipped units and historical and anticipated rates of warranty claims. As these factors are impacted by actual experience and future expectations, the Company regularly assesses the adequacy of its recorded warranty liabilities and adjusts the amounts as necessary.

Below is a table summarizing the activity related to the Company’s limited warranty liability for fiscal 2014 and for the six months ended April 4, 2015 (in thousands):

Limited warranty liability, as of September 28, 2013	$	5,942
Accruals for warranties issued during the period	4,331
Settlements (in cash or in kind) during the period	(3,470		)
Limited warranty liability, as of September 27, 2014	6,803
Accruals for warranties issued during the period	1,111
Settlements (in cash or in kind) during the period	(1,973		)
Limited warranty liability, as of April 4, 2015	$	5,941

12.    Shareholders' Equity

On August 13, 2014, the Board of Directors approved a stock repurchase program under which the Company is authorized to repurchase up to $30.0 million of its common stock in fiscal 2015. During the three months endedApril 4, 2015, the Company repurchased 192,063 shares for approximately $7.7 million, at an average price of $40.05 per share. During the six months ended April 4, 2015, the Company repurchased 379,882 shares for approximately $15.0 million, at an average price of $39.44 per share. These shares were recorded as treasury stock. In addition, as of April 4, 2015, the Company had no commitments to purchase shares before April 4, 2015, which settled after the end of the second quarter of fiscal 2015.

On August 19, 2013, the Board of Directors approved a stock repurchase program under which the Company was authorized to repurchase up to $30.0 million of its common stock in fiscal 2014. During the three months endedMarch 29, 2014, the Company repurchased 185,117 shares for approximately $7.6 million, at an average price of $41.18 per share. During the six months ended March 29, 2014, the Company repurchased 359,001 shares for approximately $14.6 million, at an average price of $40.55 per share. These shares were recorded as treasury stock. In addition, as of March 29, 2014, the Company had a commitment of approximately $0.4 million to purchase 9,449 shares, which were purchased before March 29, 2014, but settled after the end of the second quarter of fiscal 2014.

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13.    Restructuring Costs

The Company did not incur any restructuring costs for the three months endedApril 4, 2015. Restructuring costs for the six months ended April 4, 2015, related to the relocation of manufacturing operations from Juarez, Mexico to Guadalajara, Mexico. These charges are recorded within restructuring costs on the Condensed Consolidated Statements of Comprehensive Income. Restructuring liabilities are recorded within other accrued liabilities on the Condensed Consolidated Balance Sheets.

For the six months ended April 4, 2015, the Company incurred restructuring costs of $1.7 million, which consisted of the following:

• $1.6 million of moving and transition costs resulting from the relocation of manufacturing operations from Juarez to Guadalajara; and

• $0.1 million of employee termination and severance costs from the reduction of the Company's workforce in Juarez.

The Company did not recognize an income tax benefit for these restructuring costs due to tax losses in the jurisdiction where the restructuring costs occurred.

The Company's restructuring accrual activity for the three months endedApril 4, 2015 is included in the table below (in thousands):

			Employee			Lease
	Fixed		Termination			Obligations
	Asset		and Severance			and Other
	Impairment		Costs			Exit Costs		Total
Accrued balance, January 3, 2015	$	—	$	62		$	—	$	62
Restructuring costs	—		—			—		—
Amounts utilized	—		(62		)	—		(62		)
Accrued balance, April 4,2015	$	—	$	—		$	—	$	—

The Company's restructuring accrual activity for the six months ended April 4, 2015 is included in the table below (in thousands):

			Employee			Lease
	Fixed		Termination			Obligations
	Asset		and Severance			and Other
	Impairment		Costs			Exit Costs			Total
Accrued balance, September 27, 2014	$	—	$	142		$	—		$	142
Restructuring costs	—		144			1,547			1,691
Amounts utilized	—		(286		)	(1,547		)	(1,833		)
Accrued balance, April 4,2015	$	—	$	—		$	—		$	—

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14.    New Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board ("FASB") issued amended guidance for revenue recognition. The standard's core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In doing so, companies will need to use more judgment and make more estimates than under current guidance. This may include identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. This guidance is effective for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. Early adoption is not permitted. Companies have the option of using either a full or modified retrospective approach in applying this standard. The Company is currently in the process of evaluating the impact of adoption on its Consolidated Financial Statements.

In April 2014, the FASB issued final guidance that changes the criteria for a disposal to qualify as a discontinued operation and requires new disclosures of both discontinued operations and certain other disposals that do not meet the definition of a discontinued operation. The revised guidance defines a discontinued operation as (1) a component of an entity or group of components that has been disposed of by sale, disposed of other than by sale or is classified as held for sale that represents a strategic shift that has or will have a major effect on an entity's operations and financial results or (2) an acquired business or nonprofit activity that is classified as held for sale on the date of acquisition. The guidance does not change the presentation requirements for discontinued operations in the statement where net income is presented but does require the reclassification of assets and liabilities of a discontinued operation in the statement of financial position for all prior periods presented. The guidance is effective prospectively for all disposals (or classifications as held for sale) of components of an entity that occur within annual periods beginning on or after December 15, 2014, and interim periods within those years, and for all businesses that, on acquisition, are classified as held for sale that occur within annual periods beginning on or after December 15, 2014, and interim periods within those years. Early adoption is permitted, but only for disposals (or classifications as held for sale) that have not been reported in previously issued financial statements. The adoption of this guidance is not expected to have a material impact on the Company's Consolidated Financial Statements.

ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

“SAFE HARBOR” CAUTIONARY STATEMENT UNDER THE PRIVATE SECURITIES LITIGATION REFORM ACT OF 1995:

The statements contained in this Form 10-Q that are guidance or which are not historical facts (such as statements in the future tense and statements including believe, expect, intend, plan, anticipate, goal, target and similar terms and concepts), including all discussions of periods which are not yet completed, are forward-looking statements that involve risks and uncertainties. These risks and uncertainties include, but are not limited to: the risk of customer delays, changes, cancellations or forecast inaccuracies in both ongoing and new programs; the poor visibility of future orders, particularly in view of changing economic conditions; the economic performance of the industries, sectors and customers we serve; the effects of the volume of revenue from certain sectors or programs on our margins in particular periods; our ability to secure new customers, maintain our current customer base and deliver product on a timely basis; the particular risks relative to new or recent customers, programs or services, which risks include customer and other delays, start-up costs, potential inability to execute, the establishment of appropriate terms of agreements, and the lack of a track record of order volume and timing; the risks of concentration of work for certain customers; the effect of start-up costs of new programs and facilities; possible unexpected costs and operating disruption in transitioning programs; the risk that new program wins and/or customer demand may not result in the expected revenue or profitability; the fact that customer orders may not lead to long-term relationships; the adequacy of restructuring and similar charges as compared to actual expenses; our ability to manage successfully a complex business model characterized by high customer and product mix, low volumes and demanding quality, regulatory, and other requirements; increasing regulatory and compliance requirements; the potential effects of regional results on our taxes and ability to use deferred tax assets; risks related to information technology systems and data security; the effects of shortages and delays in obtaining components as a result of economic cycles or natural disasters; the risks associated with excess and obsolete inventory, including the risk that inventory purchased on behalf of our customers may not be consumed or otherwise paid for by the customer, resulting in an inventory write-off; the weakness of areas of the global economy; the effect of changes in the pricing and margins of products; raw materials and component cost fluctuations; the potential effect of fluctuations in the value of the currencies in which we transact business; the potential effect of world or local events or other events outside our control (such as changes in energy prices, terrorism and weather events); the impact of increased competition; and other risks detailed and other risks detailed herein, as well as those in our other Securities and Exchange Commission filings (particularly in "Risk Factors" in our fiscal 2014 Form 10-K).

*    *    *

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OVERVIEW

Plexus Corp. and its subsidiaries (together “Plexus” or the “Company,”) participate in the Electronic Manufacturing Services (“EMS”) industry. Plexus delivers optimized solutions to our customers through the Company's unique Product Realization Value Stream. Our customer-focused solutions model seamlessly integrates innovative product conceptualization, design, commercialization, manufacturing, fulfillment and sustaining solutions. Plexus delivers comprehensive end-to-end solutions for customers in the Americas (“AMER”), Europe, Middle East, and Africa (“EMEA”) and Asia-Pacific (“APAC”) regions.

Plexus is the industry leader in servicing mid-to-low volume, higher complexity customer programs characterized by unique flexibility, technology, quality and regulatory requirements. Plexus provides award-winning customer service to more than 140 branded product companies in the Networking/Communications, Healthcare/Life Sciences, Industrial/Commercial and Defense/Security/Aerospace market sectors. The Company's customers have stringent quality, reliability and regulatory requirements, requiring exceptional production and supply chain agility. Their products require complex configuration management, direct order fulfillment (to end customers) and global logistics management and aftermarket services. To service the complexities that the Company's customers' products demand, Plexus utilizes its Product Realization Value Stream, addressing its customers' products from concept to end of life.

The following information should be read in conjunction with our Condensed Consolidated Financial Statements included herein, the “Risk Factors” section in Part I, Item 1A of our annual report on Form 10-K for the fiscal year ended September 27, 2014 and our “Safe Harbor” Cautionary Statement included above.

RESULTS OF OPERATIONS

Consolidated Performance Summary

The following table presents selected consolidated financial data (dollars in millions, except per share data):

	Three Months Ended						Six Months Ended
	April 4, 2015			March 29, 2014			April 4, 2015			March 29, 2014
Net sales	$	651.3		$	557.6		$	1,316.0		$	1,091.5
Gross profit	$	59.8		$	52.8		$	121.2		$	104.3
Gross margin	9.2		%	9.5		%	9.2		%	9.6		%
Operating income	$	29.5		$	19.0		$	58.2		$	40.8
Operating margin	4.5		%	3.4		%	4.4		%	3.7		%
Net income	$	23.6		$	18.5		$	46.7		$	36.2
Diluted earnings per share	$	0.69		$	0.53		$	1.36		$	1.04
Return on invested capital*							14.5		%	14.1		%
Economic return*							3.5		%	3.1		%
* Non-GAAP metric; refer to Exhibit 99.1 for reconciliation.

Net sales. For the three months ended April 4, 2015, net sales increased $93.7 million, or 16.8 percent, compared to the three months ended March 29, 2014. This increase was primarily driven by a $47.7 million increase in net sales from the networking/communications sector, where new product ramps for two key customers drove $41.0 million of increased net sales. The remainder of the increase was driven by higher net sales across the other three market sectors primarily due to program ramps and increased end-market demand, particularly in the healthcare/life sciences sector.

For the six months ended April 4, 2015, net sales increased $224.5 million, or 20.6 percent, compared to the six months ended March 29, 2014. This increase was largely driven by a $118.4 million increase in net sales from the networking/communications sector. Increased end-market demand for a key customer and increased end-market demand as well as a new program launch for another key customer drove $107.4 million of increased net sales in this sector. The remainder of the net sales increase was driven by higher net sales across the other three market sectors primarily due to new program ramps and increased end-market demand, particularly in the healthcare/life sciences sector.

Our net sales by market sector for the indicated periods were as follows (in millions):

16

	Three Months Ended				Six Months Ended
Market Sector	April 4, 2015		March 29, 2014		April 4, 2015		March 29, 2014
Networking/Communications	$	210.1	$	162.4	$	443.8	$	325.4
Healthcare/Life Sciences	190.5		166.4		386.9		331.3
Industrial/Commercial	160.4		144.6		308.4		280.2
Defense/Security/Aerospace	90.3		84.2		176.9		154.6
	$	651.3	$	557.6	$	1,316.0	$	1,091.5

Networking/Communications. Net sales for the networking/communications sector increased $47.7 million for the three months ended April 4, 2015 as compared to the three months ended March 29, 2014. The increase was primarily the result of increased sales to a key customer of $31.3 million resulting from new product ramps. An increase in net sales of $9.7 million to another key customer in this sector was the result of increased demand for an end of life product.

Net sales for the networking/communications sector increased $118.4 million for the six months ended April 4, 2015 as compared to the six months ended March 29, 2014. The increase was primarily the result of increased sales to a key customer of $79.9 million resulting from new product ramps and expansion of its end-market demand. An increase in net sales of $27.5 million to another key customer in this sector was the result of new program ramps as well as increased demand for an end of life product.

Healthcare/Life Sciences. Net sales for the healthcare/life sciences sector increased $24.1 million for the three months ended April 4, 2015 as compared to the three months ended March 29, 2014. The increased net sales were primarily driven by new product launches, partially offset by a decrease of $8.8 million related to end-market softening for four customers.

Net sales for the healthcare/life sciences sector increased $55.6 million for the six months ended April 4, 2015 as compared to the six months ended March 29, 2014. The increased net sales were primarily driven by $70.3 million from an expansion of existing customers' end-market demand and new product launches, partially offset by a decrease of $14.7 million related to end-market softening for three customers.

Industrial/Commercial. Net sales for the industrial/commercial sector increased $15.8 million for the three months ended April 4, 2015 as compared to the three months ended March 29, 2014. The increase was primarily driven by $6.8 million in increased net sales from two key customers attributable to an expansion of their end-market demand. The remainder of the increase resulted from increased net sales across various customers and a $3.5 million increase due to a customer win during the second quarter of fiscal 2015.

Net sales for the industrial/commercial sector increased $28.2 million for the six months ended April 4, 2015 as compared to the six months ended March 29, 2014. The increase was primarily driven by $22.7 million in incremental net sales with our top four customers and mixed market movement across the rest of the market sector.

Defense/Security/Aerospace. Net sales for the defense/security/aerospace sector increased $6.1 million for the three months ended April 4, 2015 as compared to the three months ended March 29, 2014. The increase was primarily driven by $7.6 million in incremental net sales from three customers attributable to new program ramps and increased end-market demand, partially offset by $2.8 million in reductions in end-market demand from another key customer.

Net sales for the defense/security/aerospace sector increased $22.3 million for the six months ended April 4, 2015 as compared to the six months ended March 29, 2014. The increase was primarily driven by $9.5 million in incremental net sales from two key customers attributable to new program ramps and increased end-market demand. The remainder of the increase resulted from increased net sales across various other customers as a result of new program ramps and increased end-market demand.

Gross profit. For the three months ended April 4, 2015, gross profit increased $7.0 million, or 13.3 percent, as compared to the three months ended March 29, 2014. The increase in gross profit was primarily driven by the increase in net sales, partially offset by a decrease in gross margin to 9.2 percent from 9.5 percent driven by customer mix, the impact of ramping up the Guadalajara, Mexico site and operational inefficiencies related to investing in our sites and regions.

For the six months ended April 4, 2015, gross profit increased $16.9 million, or 16.2 percent, as compared to the six months ended March 29, 2014. The increase in gross profit was primarily driven by the increase in net sales, partially offset by a decrease in gross margin to 9.2 percent from 9.6 percent, driven by customer mix, the impact of ramping up the Guadalajara site and operational inefficiencies related to investing in our sites and regions.

17

Operating income. For the three months ended April 4, 2015, operating income increased $10.5 million as compared to the three months ended March 29, 2014 primarily due to increased gross profit. Additionally, during the second quarter of fiscal 2015 there were no restructuring costs recorded as compared to $6.0 million of such costs in the second quarter of fiscal 2014. Offsetting the increase in gross profit was a $2.5 million increase in selling and administrative (“S&A”) expenses as compared to the prior year period, which was driven primarily by increased variable compensation expense and additional compensation expense to support revenue growth. Operating margin increased to 4.5 percent for the three months ended April 4, 2015 from 3.4 percent for the three months ended March 29, 2014 due to a reduction in restructuring costs and improved leveraging of S&A expenses in the second quarter of fiscal 2015.

For the six months ended April 4, 2015, operating income increased $17.4 million as compared to the six months ended March 29, 2014 primarily due to increased gross profit. Additionally, restructuring costs decreased to $1.7 million from $9.7 million in the prior year period. Offsetting these increases was a $7.3 million increase in S&A expenses as compared to the prior year period, which was driven primarily by increased variable compensation expense and additional compensation expense to support revenue growth. As a result, operating margin increased to 4.4 percent for the six months ended April 4, 2015 from 3.7 percent for the six months ended March 29, 2014.

Other income (expense). Other expense increased to $2.7 million for the three months ended April 4, 2015, as compared to $1.7 million for the three months ended March 29, 2014. The increase in other expense for the three months ended April 4, 2015 was primarily the result of a $0.6 million decrease in foreign currency exchange gains recognized in the second quarter of fiscal 2014.

Other expense increased to $5.4 million for the six months ended April 4, 2015, as compared to $3.7 million for the six months ended March 29, 2014. The increase in other expense for the six months ended April 4, 2015 was primarily the result of a $1.1 million decrease in foreign currency exchange gains recognized for the six months ended March 29, 2014 and a $1.2 million increase in interest expense for the six months ended April 4, 2015.

Income taxes. Effective income tax rates for the indicated periods were as follows:

	Three Months Ended				Six Months Ended
	April 4, 2015		March 29, 2014		April 4, 2015		March 29, 2014
Effective tax rate	12.0	%	(7.2	)%	11.7	%	2.5	%

Income tax expense was $3.2 million compared to a $1.2 million income tax benefit for the three months ended April 4, 2015 and March 29, 2014, respectively. Income tax expense was $6.2 million compared to $0.9 million for the six months ended April 4, 2015 and March 29, 2014, respectively. Income tax expense for the three and six months ended March 29, 2014 was favorably impacted by $3.7 million of discrete tax items recorded during the second quarter of fiscal 2014 primarily related to the completion of U.S. federal and state audits.

The impact of discrete items on the Company's income tax expense is reflected in the following table (in millions):

	Three Months Ended						Six Months Ended
	April 4, 2015			March 29, 2014			April 4, 2015		March 29, 2014
Income tax expense (benefit), as reported	$	3.2		$	(1.2	)	$	6.2	$	0.9
Impact of discrete tax items	(0.1		)	3.7			0.1		3.8
Income tax expense, as adjusted*	$	3.1		$	2.5		$	6.3	$	4.7

*The company believes that the non-GAAP presentation of income tax expense, as adjusted provides a more accurate representation and allows for a more meaningful comparison of reporting periods by eliminating discrete benefits unrelated to operations in those periods.

Income tax expense for the three and six months ended April 4, 2015 was higher than adjusted tax expense for the three and six months ended March 29, 2014 primarily due to increased earnings in jurisdictions where the Company pays tax.

The effective tax rate can fluctuate and vary from the U.S. statutory rate of 35.0 percent primarily from the amount and geographic distribution of earnings, as well as tax holiday granted to a subsidiary in the APAC segment, where we derive a significant portion of our earnings.

The estimated effective income tax rate for fiscal 2015 is expected to be between 9.0 percent and 11.0 percent. 

18

Net income. Net income for the three months ended April 4, 2015 increased $5.1 million, or 27.6 percent, to $23.6 million from $18.5 million for the three months ended March 29, 2014. Net income for the six months ended April 4, 2015 increased $10.5 million, or 29.0 percent, to $46.7 million from $36.2 million for the six months ended March 29, 2014. Net income increased in both periods primarily as a result of increased operating income, partially offset by increased net income tax expense, as discussed previously.

Diluted earnings per share. Diluted earnings per share, as reported and diluted earnings per share, as adjusted to exclude restructuring costs and discrete tax items, for the three and six months ended April 4, 2015 and March 29, 2014, were as follows:

	Three Months Ended					Six Months Ended
	April 4, 2015		March 29, 2014			April 4, 2015		March 29, 2014
Diluted earnings per share, as reported	$	0.69	$	0.53		$	1.36	$	1.04
Impact of restructuring costs	—		0.18			0.05		0.28
Impact of discrete tax items	—		(0.11		)	—		(0.11		)
Diluted earnings per share, as adjusted*	$	0.69	$	0.60		$	1.41	$	1.21

*The Company believes that the non-GAAP presentation of diluted earnings per share excluding restructuring costs and discrete tax items provides, a more meaningful comparison of reporting periods by eliminating items unrelated to operations in those periods.

The increase in diluted earnings per share for the three and six months ended April 4, 2015 was primarily the result of the increase in net income. See Note 13, "Restructuring Costs," and Note 6, "Income Taxes," in Notes to Condensed Consolidated Financial Statements.

Return on Invested Capital (“ROIC") and Economic Return. We use a 5-5 financial model that is aligned with our business strategy and includes a ROIC goal of 5.0 percentage points over our weighted average cost of capital (“WACC”), which we refer to as "Economic Return," and a 5.0 percent operating margin target. Our primary focus is on our Economic Return goal of 5.0 percentage points, which is designed to create shareholder value and generate enough cash to self-fund our targeted organic revenue growth rate of 12.0 percent.

We review our internal calculation of WACC annually, and our estimated WACC is 11.0 percent for fiscal 2015. By exercising discipline to generate ROIC in excess of our WACC, our goal is to create value for our shareholders. ROIC was 14.5 percent and 14.1 percent for the six months ended April 4, 2015 and March 29, 2014, respectively and was calculated excluding restructuring costs of $1.7 million and $9.7 million, respectively. See the table below for our calculations of ROIC and Economic Return (dollars in millions):

	Six Months Ended
	April 4, 2015			March 29, 2014
Annualized operating income (tax effected)	$	107,865		$	91,748
Average invested capital	745,441			650,061
After-tax ROIC	14.5		%	14.1		%
WACC	11.0		%	11.0		%
Economic return	3.5		%	3.1		%

We define ROIC as tax-effected operating income before restructuring costs divided by average invested capital over a rolling three-quarter period for the second quarter. Invested capital is defined as equity plus debt, less cash and cash equivalents. Other companies may not define or calculate ROIC in the same way. ROIC and other non-GAAP financial measures should be considered in addition to, not as a substitute for, measures of our financial performance prepared in accordance with U.S. generally accepted accounting principles (“GAAP”).

Non-GAAP financial measures, including ROIC and Economic return, are used for internal management goals and decision making because such measures provide additional insight into financial performance. In particular, we provide ROIC and Economic return because we believe they offer insight into the metrics that are driving management decisions since we view ROIC and Economic return as important measures in evaluating the efficiency and effectiveness of our long-term capital requirements. We also use a derivative measure of ROIC as a performance criteria in determining certain elements of compensation.

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For a reconciliation of ROIC and Economic Return to our financial statements that were prepared using GAAP, see exhibit 99.1 to this quarterly report on Form 10-Q, which exhibit is incorporated herein by reference.

REPORTABLE SEGMENTS

A discussion of financial performance by reportable segment is presented below (dollars in millions):

	Three Months Ended						Six Months Ended
	April 4, 2015			March 29, 2014			April 4, 2015			March 29, 2014
Net sales:
AMER	$	328.8		$	279.3		$	664.0		$	544.3
APAC	319.2			265.6			652.5			535.7
EMEA	35.8			32.2			63.9			59.1
Elimination of inter-segment sales	(32.5		)	(19.5		)	(64.4		)	(47.6		)
	$	651.3		$	557.6		$	1,316.0		$	1,091.5
Operating income (loss):
AMER	$	15.7		$	14.8		$	35.4		$	31.9
APAC	41.0			34.3			82.8			66.3
EMEA	(1.8		)	(1.4		)	(5.6		)	(3.9		)
Corporate expenses and other costs	(25.4		)	(28.7		)	(54.4		)	(53.5		)
	$	29.5		$	19.0		$	58.2		$	40.8

AMER. Net sales for the three months ended April 4, 2015 increased $49.5 million, or 17.7 percent, as compared to the prior year period primarily due to a $30.4 million increase in net sales from a key customer in the networking/communications sector as a result of new product ramps. Increases from several other customers across all market sectors drove the remaining increase in net sales. Operating income for the three months ended April 4, 2015 increased $0.9 million, or 6.1 percent, as compared to the prior year period, primarily due to increased sales, partially offset by $4.6 million of increased fixed manufacturing expenses resulting from increased depreciation and compensation expense to support our new Guadalajara, Mexico facility and increased compensation expense for our Neenah facility.

Net sales for the six months ended April 4, 2015 increased $119.7 million, or 22.0 percent, as compared to the prior year period, primarily due to a $79.0 million increase in net sales from a key customer in the networking/communications sector as a result of new product ramps and expansion of its end-market demand. Increases from several other customers across all market sectors drove the remaining increase in net sales. Operating income for the six months ended April 4, 2015 increased $3.5 million, or 11.0 percent, as compared to the prior year period, primarily due to increased sales, partially offset by $9.3 million of increased depreciation and compensation expense to support our new Guadalajara, Mexico facility and increased compensation expense for our Neenah facility.

APAC. Net sales for the three months ended April 4, 2015 increased $53.6 million, or 20.2 percent, as compared to the prior year period. The increase in net sales was primarily driven by $16.2 million of increased sales to two key healthcare/life sciences customers resulting from new product launches. Additionally, $7.2 million in increased sales to a key networking/communications customer was the result of increased demand on end of life products. Increases from several other customers across all market sectors drove the remaining increase in net sales. Operating income for the three months ended April 4, 2015 increased $6.7 million, or 19.5 percent, as compared to the prior year period due primarily to increased sales.

Net sales for the six months ended April 4, 2015 increased $116.8 million, or 21.8 percent, as compared to the prior year period. The increase in net sales was primarily driven by $39.8 million of increased sales to two key healthcare/life sciences customer resulting from new product launches and the expansion of their end-market demand and by $24.1 million in increased sales to a key networking/communications customer was primarily the result of increased demand on end of life products. Operating income for the six months ended April 4, 2015 increased $16.5 million, or 24.9 percent, as compared to the prior year period due primarily to increased sales and favorable changes in customer mix.

EMEA. Net sales for the three months ended April 4, 2015 increased $3.6 million, or 11.2 percent, as compared to the prior year period. Operating loss for the three months ended April 4, 2015 increased $0.4 million, as compared to the prior year period, primarily due to increased compensation expenses, in both Romania and the United Kingdom.

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Net sales for the six months ended April 4, 2015 increased $4.8 million, or 8.1 percent, as compared to the prior year period. Operating loss for the six months ended April 4, 2015 increased $1.7 million, as compared to the prior year period, primarily due to increased compensation expenses, in both Romania and the United Kingdom.

LIQUIDITY AND CAPITAL RESOURCES

Cash and cash equivalents were $356.3 million as of April 4, 2015 and $346.6 million as of September 27, 2014.

As of April 4, 2015, approximately 85.8 percent of our cash balance was held outside of the U.S. by our foreign subsidiaries. Certain foreign countries impose taxes and overall penalties on transfers of cash; however, our intent is to permanently reinvest funds held in these countries. If this cash were remitted to the U.S., additional tax obligations may reduce the amount of cash ultimately available to us in the U.S. Currently, we believe that cash held in the U.S., together with cash available under our U.S. credit facilities and cash from our foreign subsidiaries that could be remitted to the U.S. without tax consequences, will be sufficient to meet our U.S. liquidity needs for the next twelve months and for the foreseeable future.

Cash Flows. The table below shows a summary of cash flows for the periods presented (dollars in millions):

	Six Months Ended
	April 4, 2015			March 29, 2014
Cash provided by operating activities	$	40.7		$	19.7
Cash used in investing activities	(16.6		)	(30.3		)
Cash used in financing activities	(16.1		)	(7.1		)

Operating Activities. Cash flows provided by operating activities were $40.7 million for the six months ended April 4, 2015, as compared to cash flows provided by operating activities of $19.7 million for the six months ended March 29, 2014. Cash flows provided by operating activities increased primarily due to the net cash flow impact of increases in net income and improved working capital management.

The following table shows a summary of cash cycle days for the periods indicated (in days):

	Three Months Ended
	April 4, 2015	March 29, 2014
Days in accounts receivable	48	49
Days in inventory	86	84
Days in accounts payable	63	63
Days in cash deposits	12	8
Annualized cash cycle	59	62

We calculate days in accounts receivable as accounts receivable for the respective quarter divided by annualized sales for the respective quarter by day. We calculate days in inventory, accounts payable, and cash deposits as each balance sheet line item for the respective quarter divided by annualized cost of sales for the respective quarter by day. We calculate annualized cash cycle as the sum of days in accounts receivable and days in inventory, less days in accounts payable and days in cash deposits.

As of April 4, 2015 cash cycle days decreased3days compared to March 29, 2014 due to the following factors.

Days in accounts receivable for the three months ended April 4, 2015decreased by 1day compared to the three months ended March 29, 2014 primarily because of an enhanced focus on timely cash receipts.

Days in inventory for the three months ended April 4, 2015increased by 2days compared to the three months ended March 29, 2014, primarily to support a forecasted increase in net sales.

Days in cash deposits for the three months ended April 4, 2015, increased by 4days compared to the three months ended March 29, 2014, due to increased collection of inventory-related and other cash deposits from customers.

Free Cash Flow. We define free cash flow (“FCF”), as cash flow provided by (used in) operations less payments for property, plant and equipment. Cash flows provided by (used in) operating activities was $24.0 million for the six months ended April 4, 2015, as compared to a utilization of $10.9 million for the six months ended March 29, 2014. Cash flows provided by operating activities for the six months ended April 4, 2015 improved primarily due to an increase in net income and an increase

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in customer deposits while cash flows used in investing activities decreased primarily due to the completion of the Guadalajara facility.

Non-GAAP financial measures, including FCF, are used for internal management goals and decision making, and because such measures provide additional insight into financial performance. In particular, we provide FCF because we believe it offers insight into the metrics that are driving management decisions. We view FCF as an important financial metric as it demonstrates our ability to generate cash and allows us to pursue opportunities that enhance shareholder value. FCF is a non-GAAP financial measure which should be considered in addition to, not as a substitute for, measures of our financial performance prepared in accordance with U.S. GAAP.

For a reconciliation of FCF to our financial statements that were prepared using GAAP, see below (in millions):

	Six Months Ended
	April 4, 2015			March 29, 2014
Cash flows provided by operating activities	$	40.7		$	19.7
Payments for property, plant and equipment	(16.7		)	(30.6		)
Free cash flow	$	24.0		$	(10.9	)

Investing Activities. Cash flows used in investing activities totaled $16.6 million for the six months ended April 4, 2015 as compared to cash flows used in investing activities of $30.3 million for the six months ended March 29, 2014. Cash flows used in investing activities decreased primarily due to the completion of facility construction in Guadalajara in fiscal 2014.

We currently estimate capital expenditures for fiscal 2015 will be approximately $50.0 million, of which $16.7 million of expenditures were funded through the second quarter of fiscal 2015. The remaining fiscal 2015 capital expenditures are anticipated to be used primarily to support new capabilities, new program ramps, and to replace or refresh older equipment. We believe our estimated capital expenditures will continue to be funded from cash flows provided by operations, and may be supplemented by short-term borrowings and available cash, if required.

Financing Activities.Cash flows used in financing activities totaled $16.1 million for the six months ended April 4, 2015 as compared to $7.1 million for the six months ended March 29, 2014. In the six months ended April 4, 2015, we borrowed and then repaid $252.0 million under our revolving credit facility (described below). Cash flows used in financing activities for the six months ended April 4, 2015 were comprised primarily of $15.0 million of purchases of common stock as part of our stock repurchase program as well as payments on capital leases. Cash flows used in financing activities in the six months ended April 4, 2015 were partially offset by $4.0 million of proceeds received from the exercise of stock options. Cash flows used in financing activities for the six months ended March 29, 2014 were comprised primarily of purchases of common stock as part of our stock repurchase program as well as payments on debt and capital leases, partially offset by $10.8 million of proceeds received from the exercise of stock options.

On August 13, 2014, the Board of Directors authorized a stock repurchase program under which the Company is authorized to repurchase up to $30.0 million of its common stock in fiscal 2015. The Company expects to complete this program during fiscal 2015. During the six months ended April 4, 2015, the Company repurchased 379,882 shares for approximately $15.0 million, at an average price of $39.44 per share. These shares were recorded as treasury stock. The Company expects to complete this program on a relatively consistent basis over the balance of fiscal 2015.

The Company's Credit Facility is a $235.0 million revolving credit facility with a termination date of May 15, 2019. The Credit Facility may potentially be increased by $100.0 million to $335.0 million generally by mutual agreement of the Company and the lenders subject to certain customary conditions.

The financial covenants (as defined under the Credit Agreement) require that the Company maintain, as of each fiscal quarter end, a maximum total leverage ratio and a minimum interest coverage ratio. As of April 4, 2015, the Company was in compliance with all financial covenants of the Credit Agreement.

The Note Purchase Agreement related to the $175.0 million in principal amount of the Company's 5.20% Senior Notes, due on June 15, 2018 (the "Notes"), contains certain financial covenants, which include a maximum total leverage ratio, a minimum interest coverage ratio and a minimum net worth test, all as defined in the agreements. As of April 4, 2015, we were in compliance with all such covenants relating to the Notes and the related Note Purchase Agreement.

The Credit Facility and Note Purchase Agreement allow for the future payment of cash dividends or the future repurchases of shares provided that no event of default (including any failure to comply with a financial covenant) exists at the time of, or

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would be caused by, the dividend payment or the share repurchases. We have not paid cash dividends in the past and do not currently anticipate paying them in the future. However, we evaluate from time to time potential uses of excess cash, which in the future may include share repurchases above those already authorized, a special dividend or recurring dividends.

Based on current expectations, we believe that our projected cash flows from operations, available cash and cash equivalents, potential borrowings under the Credit Facility, and our leasing capabilities should be sufficient to meet our working capital and fixed capital requirements for the next twelve months. If our future financing needs increase, we may need to arrange additional debt or equity financing. Accordingly, we evaluate and consider from time to time various financing alternatives to supplement our financial resources. However, we cannot be assured that we will be able to make any such arrangements on acceptable terms.

CONTRACTUAL OBLIGATIONS, COMMITMENTS AND OFF-BALANCE SHEET OBLIGATIONS

Our disclosures regarding contractual obligations and commercial commitments are located in various parts of our regulatory filings. Information in the following table provides a summary of our contractual obligations and commercial commitments as of April 4, 2015 (dollars in millions):

	Payments due by fiscal year
Contractual Obligations	Total		Remaining 2015		2016-2017		2018-2019		2020 and thereafter
Long-Term Debt Obligations (1,2)	$	283.9	$	5.0	$	20.4	$	258.5	$	—
Capital Lease Obligations	6.6		2.5		4.1		—		—
Operating Lease Obligations	17.6		4.3		9.4		2.4		1.5
Purchase Obligations (3)	544.9		511.4		33.2		0.2		0.1
Other Long-Term Liabilities on the Balance Sheet (4)	10.2		0.7		0.8		0.3		8.4
Other Long-Term Liabilities not on the Balance Sheet (5)	3.7		1.4		2.3		—		—
Other financing obligations (6)	15.0		0.7		2.9		3.1		8.3
Total Contractual Cash Obligations	$	881.9	$	526.0	$	73.1	$	264.5	$	18.3

1) Includes amounts outstanding under the Credit Facility. As of April 4, 2015, the outstanding balance was $75.0 million. The amounts listed above include estimated interest obligations; see Note 4 in Notes to Condensed Consolidated Financial Statements for further information.

2) Includes $175.0 million in principal amount of Senior Notes. The amounts listed above include interest; see Note 4 in Notes to Condensed Consolidated Financial Statements for further information.

3) As of April 4, 2015, purchase obligations consist of commitments to purchase inventory and equipment in the ordinary course of business.

4) As of April 4, 2015, other long-term obligations on the balance sheet included deferred compensation obligations to certain of our former and current executive officers, as well as other key employees, and an asset retirement obligation. We have excluded from the above table the impact of approximately $2.4 million, as of April 4, 2015, related to unrecognized income tax benefits. The Company cannot make reliable estimates of the future cash flows by period related to this obligation.

5) As of April 4, 2015, other long-term obligations not on the balance sheet consisted of a commitment for salary continuation and certain benefits in the event employment of one executive officer of the Company is terminated without cause. Excluded from the amounts disclosed are certain bonus and incentive compensation amounts, which would be paid on a prorated basis in the year of termination.

6) Includes future minimum payments under the lease agreement for our Guadalajara, Mexico facility. Excludes $20.3 million of future minimum payments under renewal options from 2025 through 2034.

DISCLOSURE ABOUT CRITICAL ACCOUNTING POLICIES

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Our critical accounting policies are disclosed in our 2014 annual report on Form 10-K. During the second quarter of fiscal 2015, there were no material changes to these policies.

NEW ACCOUNTING PRONOUNCEMENTS

See Note 14 in Notes to Condensed Consolidated Financial Statements for further information regarding new accounting pronouncements.

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ITEM 3.    QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

We are exposed to market risk from changes in foreign exchange and interest rates. We selectively use financial instruments to reduce such risks.

Foreign Currency Risk

We do not use derivative financial instruments for speculative purposes. Our policy is to selectively hedge our foreign currency denominated transactions in a manner that partially offsets the effects of changes in foreign currency exchange rates. We typically use foreign currency contracts to hedge only those currency exposures associated with certain assets and liabilities denominated in non-functional currencies. Corresponding gains and losses on the underlying transaction generally offset the gains and losses on these foreign currency hedges. Our international operations create potential foreign exchange risk.

Our percentages of transactions denominated in currencies other than the U.S. dollar for the indicated periods were as follows:

	Three Months Ended				Six Months Ended
	April 4, 2015		March 29, 2014		April 4, 2015		March 29, 2014
Net sales	7.9	%	8.0	%	6.8	%	7.8	%
Total costs	11.9	%	13.1	%	12.1	%	13.4	%

The Company has evaluated the potential foreign currency exchange rate risk on transactions denominated in currencies other than the U.S. dollar for the periods presented above. Based on the Company’s overall currency exposure, as of April 4, 2015, a 10.0 percent change in the value of the U.S. dollar relative to our other transactional currencies would not have a material effect on the Company’s financial position, results of operations, or cash flows.

Interest Rate Risk

We have financial instruments, including cash equivalents, which are sensitive to changes in interest rates. We consider the use of interest rate swaps based on existing market conditions and have entered into interest rate swaps for our term loans. For more information, refer to Note 5, "Derivatives and Fair Value Measurements," in Notes to Condensed Consolidated Financial Statements. Interest rate swap agreements are subject to the further risk that the counterparties to these agreements may fail to comply with their obligations thereunder.

The primary objective of our investment activities is to preserve principal, while maximizing yields without significantly increasing market risk. To achieve this, we maintain our portfolio of cash equivalents in a variety of highly rated securities, money market funds and certificates of deposit, and limit the amount of principal exposure to any one issuer.

As of April 4, 2015, our only material interest rate risk is associated with our Credit Facility. Through the use of interest rate swaps, as described above, we fixed the basis on which we pay interest, and the borrowings under the Note Purchase Agreement are based on a fixed interest rate, thus mitigating much of our interest rate risk.

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ITEM 4.    CONTROLS AND PROCEDURES

Disclosure Controls and Procedures

The Company maintains disclosure controls and procedures designed to ensure that the information the Company must disclose in its filings with the Securities and Exchange Commission (“SEC”) is recorded, processed, summarized and reported on a timely basis. The Company’s principal executive officer and principal financial officer have reviewed and evaluated, with the participation of the Company’s management, the Company’s disclosure controls and procedures as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”) as of the end of the period covered by this report (the “Evaluation Date”). Based on such evaluation, the chief executive officer and chief financial officer have concluded that, as of the Evaluation Date, the Company’s disclosure controls and procedures are effective (a) in recording, processing, summarizing and reporting, on a timely basis, information required to be disclosed by the Company in the reports the Company files or submits under the Exchange Act, and (b) in assuring that information is accumulated and communicated to the Company’s management, including the chief executive officer and chief financial officer, as appropriate to allow timely decisions regarding required disclosure.

Changes in Internal Control Over Financial Reporting

During the second quarter of fiscal 2015, there have been no changes to the Company’s internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

Limitations on the Effectiveness of Controls

Our management, including our chief executive officer and chief financial officer, does not expect that our disclosure controls and internal controls will prevent all errors and all fraud. A control system, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met. Further, the design of a control system must reflect the fact that there are resource constraints, and the benefits of controls must be considered relative to their costs. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues and instances of fraud, if any, within the Company have been detected. These inherent limitations include the realities that judgments in decision-making can be faulty, and that breakdowns can occur because of simple errors or mistakes. Additionally, controls can be circumvented by the individual acts of some persons, by collusion of two or more people, or by management override of the control. The design of any system of controls also is based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions; over time, a control may become inadequate because of changes in conditions, or the degree of compliance with the policies or procedures may deteriorate. Because of the inherent limitations in a cost-effective control system, misstatements due to error or fraud may occur and not be detected.

Notwithstanding the foregoing limitations on the effectiveness of controls, we have nonetheless reached the conclusion that the Company’s disclosure controls and procedures and internal control over financial reporting are effective at the reasonable assurance level.

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PART II. OTHER INFORMATION

ITEM 1A.    Risk Factors

In addition to the risks and uncertainties discussed herein, particularly those discussed in the “Safe Harbor” Cautionary Statement and "Management’s Discussion and Analysis of Financial Condition and Results of Operations" in Part I, Item 2, see the risk factors set forth in Part I, Item 1A of our annual report on Form 10-K for the fiscal year ended September 27, 2014.

ITEM 2.     Unregistered Sales Of Equity Securities and Use Of Proceeds

The following table provides the specified information about the repurchases of shares by the Company during the three months ended April 4, 2015.

Period	Total number of shares purchased	Average price paid per share		Total number of shares purchased as part of publicly announced plans or programs	Maximum approximate dollar value of shares that may yet be purchased under the plans or programs*
January 4, 2015 to January 31, 2015	57,549	$	39.73	57,549	$	20,424,059
February 1, 2015 to February 28, 2015	61,589	$	39.48	61,589	$	17,992,524
March 1, 2015 to April 4, 2015	72,925	$	40.79	72,925	$	15,018,066
Total	192,063	$	40.05	192,063

* On August 13, 2014, the Board of Directors approved a stock repurchase program under which the Company is authorized to repurchase up to $30.0 million of its common stock in fiscal 2015. As of April 4, 2015, the Company had repurchased 379,882 shares for approximately $15.0 million, at an average price of $39.44 per share. These shares were recorded as treasury stock. In addition, as of April 4, 2015, the Company had no commitments to purchase shares before April 4, 2015, but settled after the end of the second quarter of fiscal 2015.

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ITEM 6.    Exhibits

31.1	Certification of Chief Executive Officer pursuant to Section 302(a) of the Sarbanes Oxley Act of 2002.
31.2	Certification of Chief Financial Officer pursuant to Section 302(a) of the Sarbanes Oxley Act of 2002.
32.1	Certification of the CEO pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2	Certification of the CFO pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
99.1	Reconciliation of ROIC and Economic Return to GAAP Financial Statements
101	The following materials from Plexus Corp.’s Quarterly Report on Form 10-Q for the quarter ended April 4, 2015, formatted in XBRL (Extensible Business Reporting Language): (i) the Consolidated Statements of Comprehensive Income, (ii) the Consolidated Balance Sheets, (iii) the Consolidated Statements of Cash Flows, and (iv) Notes to Consolidated Financial Statements.
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document

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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.

	Plexus Corp.
	Registrant
Date: 5/11/15	/s/ Dean A. Foate
	Dean A. Foate
	Chairman, President and Chief Executive Officer
Date: 5/11/15	/s/ Patrick J. Jermain
	Patrick J. Jermain
	Senior Vice President and Chief Financial Officer

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EX-31.1

Exhibit 31.1

CERTIFICATION

I, Dean A. Foate, certify that:

1. I have reviewed this quarterly report on Form 10-Q for the quarter ended April 4, 2015 of Plexus Corp.;

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 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-(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 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 the 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 11, 2015

/s/    Dean A. Foate        

Dean A. Foate

Chairman, President and Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Patrick J. Jermain, certify that:

1. I have reviewed this quarterly report on Form 10-Q for the quarter ended April 4, 2015 of Plexus Corp.;

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 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-(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 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 the 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 11, 2015

/s/    Patrick J. Jermain

Patrick J. Jermain

Senior Vice President and 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

In connection with the Quarterly Report of Plexus Corp. (the “Company”) on Form 10-Q for the quarterly period ended April 4, 2015, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Dean A. Foate, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/    Dean A. Foate        

Dean A. Foate

Chairman, President and Chief Executive Officer

May 11, 2015

A signed original of this written statement required by Section 906, or other document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Section 906, has been provided to Plexus Corp. and will be retained by Plexus Corp. and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Plexus Corp. (the “Company”) on Form 10-Q for the quarterly period ended April 4, 2015, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Patrick J. Jermain, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/    Patrick J. Jermain 

Patrick J. Jermain

Senior Vice President and Chief Financial Officer

May 11, 2015

A signed original of this written statement required by Section 906, or other document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Section 906, has been provided to Plexus Corp. and will be retained by Plexus Corp. and furnished to the Securities and Exchange Commission or its staff upon request.

EX-99.1

Exhibit 99.1

PLEXUS CORP.

NON-GAAP SUUPLEMENTAL INFORMATION

(in thousands, except per share data)

(unaudited)

Return on Invested Capital ("ROIC") and Economic Return Calculations

	Six Months Ended				Three Months Ended				Six Months Ended
	April 4, 2015				January 3, 2015				March 29, 2014
Operating income	$	58,234			$	28,783			$	40,761
Restructuring charges	1,691				1,691				9,650
Adjusted operating income	$	59,925			$	30,474			$	50,411
	x		2		x		4		x		2
Annualized operating income	119,850				121,896				100,822
Tax rate	x		10	%	x		10	%	x		9	%
Tax impact	11,985						12,190				9,074
Operating income (tax effected)	$	107,865			$	109,706			$	91,748
Average invested capital	$	745,441			$	759,676			$	650,061
ROIC	14.5			%	14.4			%	14.1			%
Weighted average cost of capital ("WACC")	11.0			%	11.0			%	11.0			%
Economic return	3.5			%	3.4			%	3.1			%

	April 4,			January 3,			September 27,
	2015			2015			2014
Equity	$	808,468		$	792,298		$	781,133
Plus:
Debt—current	4,774			4,793			4,368
Debt—non-current	260,025			260,990			262,046
Less:
Cash and cash equivalents	(356,296		)	(239,685		)	(346,591		)
	$	716,971		$	818,396		$	700,956

Second quarter fiscal 2015 average invested capital (April 4, 2015, January 3, 2015 and September 27, 2014) was $745,441. First quarter fiscal 2015 average invested capital (January 3, 2015 and September 27, 2014) was $759,676.

	March 29,			December 28,			September 28,
	2014			2013			2013
Equity	$	736,493		$	722,021		$	699,301
Plus:
Debt—current	3,901			3,796			3,574
Debt—non-current	256,090			256,949			257,773
Less:
Cash and cash equivalents	(323,695		)	(324,156		)	(341,865		)
	$	672,789		$	658,610		$	618,783

Second quarter fiscal 2014 average invested capital (March 29, 2014, December 28, 2013 and September 28, 2013) was $650,061.

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Stock-Based Compensation (Details) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 04, 2015	Mar. 29, 2014	Apr. 04, 2015	Mar. 29, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Allocated Share-based Compensation Expense	$ 3.4	$ 3.3	$ 7.1	$ 5.9
Maximum [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	100		100
Minimum [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	0		0

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Derivatives And Fair Value Measurements (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended
	Apr. 04, 2015	Mar. 29, 2014	Apr. 04, 2015	Mar. 29, 2014	Sep. 27, 2014
Derivatives And Fair Value Measurements [Line Items]
Fixed interest rate	0.875%		0.875%
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	$ 0	$ 0	$ 0	$ 0
Forward Contracts [Member]
Derivatives And Fair Value Measurements [Line Items]
Foreign Currency Contracts, Liability, Fair Value Disclosure	31,000		31,000		0
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	(1,922,000)	643,000	(6,178,000)	(100,000)
Interest Rate Swaps [Member]
Derivatives And Fair Value Measurements [Line Items]
Derivative, Notional Amount	75,000,000		75,000,000		75,000,000
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	(563,000)	(77,000)	(873,000)	(108,000)
Interest Rate Cash Flow Hedge Derivative at Fair Value, Net	(400,000)		(400,000)		(200,000)
ROMANIA | Forward Contracts [Member]
Derivatives And Fair Value Measurements [Line Items]
Derivative, Notional Amount	4,800,000		4,800,000		37,900,000
Foreign Currency Contracts, Liability, Fair Value Disclosure	100,000		100,000
Foreign Currency Contract, Asset, Fair Value Disclosure					1,500,000
Term Loans New Credit Facility [Member]
Derivatives And Fair Value Measurements [Line Items]
Credit facility outstanding at end of period	75,000,000		75,000,000
Senior Notes [Member]
Derivatives And Fair Value Measurements [Line Items]
Senior Notes, principal outstanding	175,000,000		175,000,000		175,000,000
MALAYSIA | Forward Contracts [Member]
Derivatives And Fair Value Measurements [Line Items]
Derivative, Notional Amount	66,000,000		66,000,000		64,600,000
Assets [Member] | Derivatives Designated As Hedging Instruments [Member] | Forward Contracts [Member]
Derivatives And Fair Value Measurements [Line Items]
Derivative Liability, Fair Value, Gross Liability	4,400,000		4,400,000
Current Liabilities - Other [Member] | Derivatives Designated As Hedging Instruments [Member] | Forward Contracts [Member]
Derivatives And Fair Value Measurements [Line Items]
Derivative Liability, Fair Value, Gross Liability	4,373,000		4,373,000		0
Current Liabilities - Other [Member] | Derivatives Designated As Hedging Instruments [Member] | Interest Rate Swaps [Member]
Derivatives And Fair Value Measurements [Line Items]
Interest Rate Cash Flow Hedge Derivative at Fair Value, Net	(420,000)		(420,000)		0
Prepaid Expenses And Other [Member] | Derivatives Designated As Hedging Instruments [Member] | Forward Contracts [Member]
Derivatives And Fair Value Measurements [Line Items]
Foreign Currency Contract, Asset, Fair Value Disclosure					$ 812,000

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Earnings Per Share (Tables)

6 Months Ended

Apr. 04, 2015

Earnings Per Share [Abstract]

Schedule Of Reconciliation Of Amounts Utilized In Computation Of Basic And Diluted Earnings Per Share

The following is a reconciliation of the amounts utilized in the computation of basic and diluted earnings per share for the three and six months ended April 4, 2015 and March 29, 2014 (in thousands, except per share amounts):

	Three Months Ended				Six Months Ended
	April 4, 2015		March 29, 2014		April 4, 2015		March 29, 2014
Basic and Diluted Earnings Per Share:
Net income	$	23,594	$	18,516	$	46,673	$	36,179
Basic weighted average common shares outstanding	33,606		33,868		33,604		33,799
Dilutive effect of share-based awards outstanding	736		835		787		899
Diluted weighted average shares outstanding	34,342		34,703		34,391		34,698
Earnings per share:
Basic	$	0.70	$	0.55	$	1.39	$	1.07
Diluted	$	0.69	$	0.53	$	1.36	$	1.04

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Shareholders' Equity (Details) (USD $)	3 Months Ended		6 Months Ended
	Apr. 04, 2015	Mar. 29, 2014	Apr. 04, 2015	Mar. 29, 2014	Aug. 13, 2014	Aug. 19, 2013
Stockholders' Equity Note [Abstract]
Stock Repurchase Program, Authorized Amount					$ 30,000,000	$ 30,000,000
Stock Repurchased During Period, Shares	192,063	185,117	379,882	359,001
Cost of shares repurchased	7,700,000	7,600,000	14,982,000	14,557,000
Average price of repurchased shares	$ 40.05	$ 41.18	$ 39.44	$ 40.55
Committed Payments for Repurchase of Common Stock		$ 400,000
Shares of Common Stock Committed to Purchase		9,449

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Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 04, 2015 Rate	Mar. 29, 2014 Rate	Apr. 04, 2015 Rate	Mar. 29, 2014 Rate
Income Tax Expense (Benefit), Continuing Operations [Abstract]
Income tax expense (benefit)	$ 3,203	$ (1,244)	$ 6,165	$ 919
Gross Income Tax Reconciliation, Percent		14.40%		12.80%
Effective tax rates	12.00%	(7.20%)	11.70%	2.50%
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions				$ 3,700

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Debt

6 Months Ended

Apr. 04, 2015

Debt Instruments [Abstract]

Debt

Debt, capital lease obligations and other financing amounts outstanding at April 4, 2015 and September 27, 2014 are summarized below (in thousands):

	April 4, 2015		September 27, 2014
5.20% Senior Notes, due June 15, 2018	$	175,000	$	175,000
Borrowings under revolving credit facility, due May 15, 2019	75,000		75,000
Capital lease obligations	6,689		8,414
Other financing obligation	8,110		8,000
Total debt, capital lease obligations, and other financing	264,799		266,414
Less current portion of debt, capital lease obligations, and other financing	4,774		4,368
Total debt, capital lease obligations, and other financing, less current portion	$	260,025	$	262,046

On May 15, 2014, the Company entered into an amendment (the "Amendment") to its credit agreement, dated as of May 15, 2012 (as amended, the "Credit Agreement"), related to its five-year senior unsecured credit facility (the “Credit Facility”). As a result of the Amendment, the Credit Facility, which was formerly a $250.0 million facility consisting of a $160.0 million revolving credit facility and a $90.0 million term loan (balance of $75.0 million as of May 15, 2014), was converted into a $235.0 million revolving credit facility, and its termination date was extended from May 15, 2017 to May 15, 2019. The Credit Facility may potentially be increased by $100.0 million to $335.0 million generally by mutual agreement of the Company and the lenders, subject to certain customary conditions. For the six months ended April 4, 2015, the Company borrowed and then repaid $252.0 million of revolving borrowings under the Credit Facility.

Borrowings under the Credit Facility, at the Company's option, bear interest at a defined base rate or the LIBOR rate plus, in each case, an applicable margin based upon the Company's leverage ratio as defined in the Credit Agreement. Rates would increase upon negative changes in specified Company financial metrics and would decrease to no less than LIBOR plus 1.00% or base rate plus 0.00% upon reduction in the current total leverage ratio. As of April 4, 2015, the Company had a borrowing rate of LIBOR plus 1.13%. As of April 4, 2015, all outstanding debt under the Credit Facility is effectively at a fixed interest rate as a result of the interest rate swap contract discussed in Note 5, "Derivatives and Fair Value Measurements." The Company is required to pay a commitment fee based on the company's leverage ratio for the unused portion of the revolving credit facility. The fee is paid quarterly based on the prior quarter weighted average available revolving commitment. This rate was 0.2% as of April 4, 2015.

The Company also has outstanding 5.20% Senior Notes, due on June 15, 2018 (the “Notes”); $175.0 million principal of the Notes was outstanding as of both April 4, 2015 and September 27, 2014.

The Notes and borrowings under the Credit Facility are carried at the principal amount outstanding. Other financing obligations of $8.1 million and $8.0 million for the period ending April 4, 2015 and September 27, 2014, respectively, relate to a non-cash financing transaction for the Company's facility in Guadalajara, Mexico.

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Restructuring Costs (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 04, 2015	Jan. 03, 2015	Apr. 04, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 100	$ 100	$ 100
Restructuring Charges	0	1,700	1,700
Restructuring Reserve, Accrual Adjustment	(100)	(1,800)
Restructuring Reserve	0	100	0
Fixed Asset Impairment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	0	0	0
Restructuring Charges	0	0
Restructuring Reserve, Accrual Adjustment	0	0
Restructuring Reserve	0	0	0
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	62	142	142
Restructuring Charges	0	144	100
Restructuring Reserve, Accrual Adjustment	(62)	(286)
Restructuring Reserve	0	62	0
Lease Obligations and Other Exit Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	0	0	0
Restructuring Charges	0	1,547	1,600
Restructuring Reserve, Accrual Adjustment	0	(1,547)
Restructuring Reserve	$ 0	$ 0	$ 0

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Basis Of Presentation And Accounting Policies (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Apr. 04, 2015 M	Sep. 27, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Liquid investments, maximum maturity period, months	3
Fair value of long-term debt	$ 251.7	$ 247.5
Long-term Debt	$ 250.0	$ 250.0

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Restructuring Costs (Tables)

6 Months Ended

Apr. 04, 2015

Restructuring Costs [Abstract]

Restructuring and Related Costs [Table Text Block]

The Company's restructuring accrual activity for the six months ended April 4, 2015 is included in the table below (in thousands):

			Employee			Lease
	Fixed		Termination			Obligations
	Asset		and Severance			and Other
	Impairment		Costs			Exit Costs			Total
Accrued balance, September 27, 2014	$	—	$	142		$	—		$	142
Restructuring costs	—		144			1,547			1,691
Amounts utilized	—		(286		)	(1,547		)	(1,833		)
Accrued balance, April 4,2015	$	—	$	—		$	—		$	—

The Company's restructuring accrual activity for the three months endedApril 4, 2015 is included in the table below (in thousands):

			Employee			Lease
	Fixed		Termination			Obligations
	Asset		and Severance			and Other
	Impairment		Costs			Exit Costs		Total
Accrued balance, January 3, 2015	$	—	$	62		$	—	$	62
Restructuring costs	—		—			—		—
Amounts utilized	—		(62		)	—		(62		)
Accrued balance, April 4,2015	$	—	$	—		$	—	$	—

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Inventories (Schedule Of Inventories) (Details) (USD $)	Apr. 04, 2015	Sep. 27, 2014
Inventory, Net [Abstract]
Raw materials	$ 392,553,000	$ 371,641,000
Work-in-process	86,903,000	76,531,000
Finished goods	77,584,000	77,798,000
Inventory, net	557,040,000	525,970,000
Customer deposits related to inventory	$ 58,500,000	$ 51,000,000

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Property, Plant And Equipment (Schedule Of Property, Plant And Equipment) (Details) (USD $) In Thousands, unless otherwise specified	Apr. 04, 2015	Sep. 27, 2014
Property, Plant and Equipment, Net [Abstract]
Land, buildings and improvements	$ 278,422	$ 283,569
Machinery and equipment	327,286	331,981
Computer hardware and software	97,346	95,780
Construction in progress	15,069	9,694
Property, plant and equipment, gross	718,123	721,024
Less: accumulated depreciation	394,401	386,098
Property, plant and equipment, net	$ 323,722	$ 334,926

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Property, Plant And Equipment

6 Months Ended

Apr. 04, 2015

Property, Plant and Equipment, Net [Abstract]

Property, Plant And Equipment

Property, plant and equipment as of April 4, 2015 and September 27, 2014 consisted of (in thousands):

	April 4, 2015		September 27, 2014
Land, buildings and improvements	$	278,422	$	283,569
Machinery and equipment	327,286		331,981
Computer hardware and software	97,346		95,780
Construction in progress	15,069		9,694
	718,123		721,024
Less: accumulated depreciation	394,401		386,098
	$	323,722	$	334,926

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Debt (Details) (USD $)	3 Months Ended	6 Months Ended
	Apr. 04, 2015	Apr. 04, 2015	Mar. 29, 2014	Sep. 27, 2014	May 15, 2012	May 15, 2014
Debt Instrument [Line Items]
Debt Instrument, Face Amount					$ 250,000,000
Capital Lease Obligations	6,689,000	6,689,000		8,414,000
Capital Lease Obligations, Noncurrent	8,100,000	8,100,000		8,000,000
Debt and Capital Lease Obligations	264,799,000	264,799,000		266,414,000
Current portion of long-term debt and capital lease obligations	4,774,000	4,774,000		4,368,000
Long-term Debt, Excluding Current Maturities	260,025,000	260,025,000		262,046,000
Proceeds from debt issuance		252,000,000	121,000,000
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum	1.00%
Revolving Loans New Credit Facility [Member]
Debt Instrument [Line Items]
Current borrowing capacity					90,000,000
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.20%
Term Loans New Credit Facility [Member]
Debt Instrument [Line Items]
Current borrowing capacity					160,000,000	235,000,000
Line Of Credit Facility Estimated Balloon Repayment						75,000,000
Credit facility outstanding at end of period	75,000,000	75,000,000
Senior Notes [Member]
Debt Instrument [Line Items]
Senior Notes, principal outstanding	175,000,000	175,000,000		175,000,000
Debt Instrument, Interest Rate, Stated Percentage	5.20%	5.20%
Term Loans New Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility outstanding at end of period	75,000,000	75,000,000		75,000,000
Minimum [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity						100,000,000
Maximum [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity						$ 335,000,000

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Business Segments (Schedule Of Financial Information About Company's Reportable Segments) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 04, 2015	Mar. 29, 2014	Apr. 04, 2015	Mar. 29, 2014	Sep. 27, 2014
Segment Reporting Information [Line Items]
Net sales	$ 651,285	$ 557,616	$ 1,315,975	$ 1,091,521
Operating income (loss)	29,452	19,000	58,234	40,761
Interest expense	(3,383)	(3,082)	(7,160)	(5,896)
Interest income	788	683	1,686	1,322
Miscellaneous	(60)	671	78	911
Income before income taxes	26,797	17,272	52,838	37,098
Total assets	1,656,149		1,656,149		1,609,026
AMER [Member]
Segment Reporting Information [Line Items]
Net sales	328,753	279,271	664,015	544,280
Operating income (loss)	15,714	14,868	35,466	31,924
Total assets	537,201		537,201		521,259
APAC [Member]
Segment Reporting Information [Line Items]
Net sales	319,156	265,582	652,533	535,733
Operating income (loss)	40,989	34,312	82,770	66,254
Total assets	948,779		948,779		881,426
EMEA [Member]
Segment Reporting Information [Line Items]
Net sales	35,773	32,240	63,853	59,054
Operating income (loss)	(1,793)	(1,448)	(5,624)	(3,913)
Total assets	112,068		112,068		135,841
Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Net sales	(32,397)	(19,477)	(64,426)	(47,546)
Corporate [Member]
Segment Reporting Information [Line Items]
Operating income (loss)	(25,458)	(28,732)	(54,378)	(53,504)
Total assets	$ 58,101		$ 58,101		$ 70,500

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Consolidated Statements Of Comprehensive Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 04, 2015	Mar. 29, 2014	Apr. 04, 2015	Mar. 29, 2014
Income Statement [Abstract]
Revenue, Net	$ 651,285	$ 557,616	$ 1,315,975	$ 1,091,521
Cost of sales	(591,508)	(504,781)	(1,194,784)	(987,184)
Gross profit	59,777	52,835	121,191	104,337
Selling and administrative expenses	30,325	27,790	61,266	53,926
Restructuring Costs and Asset Impairment Charges	0	6,045	1,691	9,650
Operating income	29,452	19,000	58,234	40,761
Other income (expense):
Interest expense	(3,383)	(3,082)	(7,160)	(5,896)
Interest income	788	683	1,686	1,322
Miscellaneous	(60)	671	78	911
Income before income taxes	26,797	17,272	52,838	37,098
Income tax expense (benefit)	3,203	(1,244)	6,165	919
Net income	23,594	18,516	46,673	36,179
Earnings per share:
Basic	$ 0.70	$ 0.55	$ 1.39	$ 1.07
Diluted	$ 0.69	$ 0.53	$ 1.36	$ 1.04
Weighted average shares outstanding:
Basic	33,606	33,868	33,604	33,799
Diluted	34,342	34,703	34,391	34,698
Comprehensive income:
Net income	23,594	18,516	46,673	36,179
Derivative instrument fair market value adjustment - net of income tax	(1,314)	1,386	(5,958)	863
Foreign currency translation adjustments	(1,366)	(2,901)	(6,727)	(480)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(2,680)	(1,515)	(12,685)	383
Comprehensive income	$ 20,914	$ 17,001	$ 33,988	$ 36,562

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Basis Of Presentation And Accounting Policies

6 Months Ended

Apr. 04, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis Of Presentation And Accounting Policies

Basis of Presentation

The accompanying Condensed Consolidated Financial Statements included herein have been prepared by Plexus Corp. and its subsidiaries (together “Plexus” or the “Company”) without audit and pursuant to the rules and regulations of the United States (“U.S.”) Securities and Exchange Commission (“SEC”). In the opinion of the Company, the accompanying Condensed Consolidated Financial Statements reflect all adjustments, which include normal recurring adjustments necessary for the fair statement of the consolidated financial position of the Company as of April 4, 2015 and September 27, 2014, and the results of operations for the three and six months ended April 4, 2015 and March 29, 2014, and the cash flows for the same six month periods.

Certain information and footnote disclosures, normally included in financial statements prepared in accordance with generally accepted accounting principles, have been condensed or omitted pursuant to the SEC’s rules and regulations dealing with interim financial statements. However, the Company believes that the disclosures made in the Condensed Consolidated Financial Statements included herein are adequate to make the information presented not misleading. It is suggested that these Condensed Consolidated Financial Statements be read in conjunction with the Consolidated Financial Statements and notes thereto included in the Company’s 2014 Annual Report on Form 10-K.

The Company’s reportable segments consist of the “Americas” (“AMER”) segment, “Asia-Pacific” (“APAC”) segment and “Europe, Middle East, and Africa” (“EMEA”) segment. Refer to Note 10, "Reportable Segments," for further details on reportable segments.

Cash and Cash Equivalents

Cash and cash equivalents include highly liquid investments with original maturities of three months or less at the time of purchase and are classified as Level 1 in the fair value hierarchy described below.

Fair Value of Financial Instruments

The Company holds financial instruments consisting of cash and cash equivalents, accounts receivable, accounts payable, debt, derivatives, and capital lease obligations. The carrying values of cash and cash equivalents, accounts receivable, accounts payable, and capital lease obligations as reported in the Condensed Consolidated Financial Statements approximate fair value. Derivatives are recorded at fair value. Accounts receivable are reflected at net realizable value based on anticipated losses due to potentially uncollectible balances. Anticipated losses are based on management’s analysis of historical losses and changes in customers’ credit status. The fair value of the Company’s long-term debt was $251.7 million and $247.5 million as of April 4, 2015 and September 27, 2014, respectively. The carrying value of the Company’s long-term debt was $250.0 million as of both the periods ended April 4, 2015 and September 27, 2014. The Company uses quoted market prices when available or discounted cash flows to calculate the fair value of its debt. If measured at fair value in the financial statements, long-term debt (including the current portion) would be classified as Level 2 in the fair value hierarchy described below. Refer to Note 5, "Derivatives and Fair Value Measurements," for further details on derivatives.

Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (or exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. The accounting guidance establishes a fair value hierarchy based on three levels of inputs that may be used to measure fair value. The input levels are:

Level 1: Quoted (observable) market prices in active markets for identical assets or liabilities.

Level 2: Inputs other than Level 1 that are observable, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the asset or liability.

Level 3: Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the asset or liability.

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Derivatives And Fair Value Measurements (Schedule Of The Effect Of Derivative Instruments On The Condensed Statements Of Operations) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 04, 2015	Mar. 29, 2014	Apr. 04, 2015	Mar. 29, 2014
Derivatives And Fair Value Measurements [Line Items]
Amount of Gain or (Loss) Recognized in Other Comprehensive Income (OCI) on Derivative (Effective Portion)	$ 0	$ 0	$ 0	$ 0
Interest Rate Swap [Member]
Derivatives And Fair Value Measurements [Line Items]
Amount of Gain or (Loss) Recognized in Other Comprehensive Income (OCI) on Derivative (Effective Portion)	(563)	(77)	(873)	(108)
Forward Contracts [Member]
Derivatives And Fair Value Measurements [Line Items]
Amount of Gain or (Loss) Recognized in Other Comprehensive Income (OCI) on Derivative (Effective Portion)	(1,922)	643	(6,178)	(100)
Treasury Rate Locks [Member]
Derivatives And Fair Value Measurements [Line Items]
Amount of Gain or (Loss) Recognized in Other Comprehensive Income (OCI) on Derivative (Effective Portion)	0	0	0	0
Interest Expense [Member] | Interest Rate Swap [Member]
Derivatives And Fair Value Measurements [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	(133)	(133)	(270)	(265)
Interest Income [Member] | Treasury Rate Locks [Member]
Derivatives And Fair Value Measurements [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	81	81	167	160
General and Administrative Expense [Member] | Foreign Exchange Forward [Member]
Derivatives And Fair Value Measurements [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	(1,115)	(790)	(990)	(1,040)
Income Tax (Benefit) Expense [Member]
Derivatives And Fair Value Measurements [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	$ (4)	$ 22		$ 74

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Property, Plant And Equipment (Tables)

6 Months Ended

Apr. 04, 2015

Property, Plant and Equipment, Net [Abstract]

Schedule Of Property, Plant And Equipment

Property, plant and equipment as of April 4, 2015 and September 27, 2014 consisted of (in thousands):

	April 4, 2015		September 27, 2014
Land, buildings and improvements	$	278,422	$	283,569
Machinery and equipment	327,286		331,981
Computer hardware and software	97,346		95,780
Construction in progress	15,069		9,694
	718,123		721,024
Less: accumulated depreciation	394,401		386,098
	$	323,722	$	334,926

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Derivatives And Fair Value Measurements (Schedule Of Fair Value Measurements Using Input Levels Asset/(Liability)) (Details) (USD $) In Thousands, unless otherwise specified	Apr. 04, 2015	Sep. 27, 2014
Fair Value, Inputs, Level 2 [Member]
Derivatives And Fair Value Measurements [Line Items]
Derivative, Fair Value, Net	$ (420)
Interest Rate Swaps [Member]
Derivatives And Fair Value Measurements [Line Items]
Derivative, Fair Value, Net	(420)
Interest Rate Cash Flow Hedge Asset at Fair Value		182
Interest Rate Swaps [Member] | Fair Value, Inputs, Level 1 [Member]
Derivatives And Fair Value Measurements [Line Items]
Derivative, Fair Value, Net	0
Interest Rate Swaps [Member] | Fair Value, Inputs, Level 2 [Member]
Derivatives And Fair Value Measurements [Line Items]
Interest Rate Cash Flow Hedge Asset at Fair Value		182
Interest Rate Swaps [Member] | Fair Value, Inputs, Level 3 [Member]
Derivatives And Fair Value Measurements [Line Items]
Derivative, Fair Value, Net	0
Foreign Currency Forward Contracts [Member]
Derivatives And Fair Value Measurements [Line Items]
Derivative, Fair Value, Net	(4,404)
Foreign Currency Contract, Asset, Fair Value Disclosure		2,324
Foreign Currency Forward Contracts [Member] | Fair Value, Inputs, Level 1 [Member]
Derivatives And Fair Value Measurements [Line Items]
Derivative, Fair Value, Net	0
Foreign Currency Forward Contracts [Member] | Fair Value, Inputs, Level 2 [Member]
Derivatives And Fair Value Measurements [Line Items]
Foreign Currency Contract, Asset, Fair Value Disclosure		2,324
Foreign Currency Forward Contracts [Member] | Fair Value, Inputs, Level 3 [Member]
Derivatives And Fair Value Measurements [Line Items]
Derivative, Fair Value, Net	0
Forward Exchange Designated as Hedging [Member] | Fair Value, Inputs, Level 2 [Member]
Derivatives And Fair Value Measurements [Line Items]
Derivative, Fair Value, Net	$ (4,404)

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Derivatives And Fair Value Measurements (Tables)

6 Months Ended

Apr. 04, 2015

Derivative Instruments and Hedging Activities Disclosures [Line Items]

Schedule Of Fair Values Of Derivative Instruments

Fair Values of Derivative Instruments
In thousands of dollars
	Asset Derivatives					Liability Derivatives
		April 4, 2015		September 27, 2014			April 4, 2015		September 27, 2014
Derivatives designated as hedging instruments	Balance Sheet Classification	Fair Value		Fair Value		Balance Sheet Classification	Fair Value		Fair Value
Interest rate swaps	Prepaid expenses and other	$	—	$	182	Current liabilities – other	$	420	$	—
Forward contracts	Prepaid expenses and other	$	—	$	812	Current liabilities – other	$	4,373	$	—

Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]

Fair Values of Derivative Instruments
In thousands of dollars
	Asset Derivatives					Liability Derivatives
		April 4, 2015		September 27, 2014			April 4, 2015		September 27, 2014
Derivatives not designated as hedging instruments	Balance Sheet Classification	Fair Value		Fair Value		Balance Sheet Classification	Fair Value		Fair Value
Forward contracts	Prepaid expenses and other	$	—	$	1,512	Current liabilities – other	$	31	$	—

Schedule Of Fair Value Measurements Using Input Levels Asset/(Liability)

The following table lists the fair values of assets (liabilities) of the Company’s derivatives as of April 4, 2015 and September 27, 2014, by input level as defined in Note 1 (in thousands):

	Level 1		Level 2			Level 3		Total
April 4, 2015
Interest rate swaps	$	—	$	(420	)	$	—	$	(420	)
Foreign currency forward contracts	$	—	$	(4,404	)	$	—	$	(4,404	)
September 27, 2014
Interest rate swaps	$	—	$	182		$	—	$	182
Foreign currency forward contracts	$	—	$	2,324		$	—	$	2,324

Cash Flow Hedging [Member]

Derivative Instruments and Hedging Activities Disclosures [Line Items]

Schedule Of The Effect Of Derivative Instruments On The Condensed Statements Of Operations

The Effect of Derivative Instruments on the Condensed Consolidated Statements of Comprehensive Income
for the Six Months Ended
In thousands of dollars
Derivatives in Cash Flow Hedging Relationships	Amount of Gain (Loss) Recognized in Other Comprehensive Income (“OCI”) on Derivative (Effective Portion)						Classification of  Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)						Classification of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded  from Effectiveness Testing)	Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)
	April 4, 2015			March 29, 2014				April 4, 2015			March 29, 2014				April 4, 2015		March 29, 2014
Interest rate swaps	$	(873	)	$	(108	)	Interest expense	$	(270	)	$	(265	)	Other income (expense)	$	—	$	—
Forward contracts	$	(6,178	)	$	(100	)	Selling and administrative expenses	$	(990	)	$	(1,040	)	Other income (expense)	$	—	$	—
Treasury rate locks	$	—		$	—		Interest income	$	167		$	160		Other income (expense)	$	—	$	—
Income tax	$	—		$	—		Income tax (benefit) expense	$	—		$	74		Income tax (benefit) expense	$	—	$	—

The Effect of Derivative Instruments on the Condensed Consolidated Statements of Comprehensive Income
for the Three Months Ended
In thousands of dollars
Derivatives in Cash Flow Hedging Relationships	Amount of Gain (Loss) Recognized in Other Comprehensive Income (“OCI”) on Derivative (Effective Portion)						Classification of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)						Classification of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)
	April 4, 2015			March 29, 2014				April 4, 2015			March 29, 2014				April 4, 2015		March 29, 2014
Interest rate swaps	$	(563	)	$	(77	)	Interest expense	$	(133	)	$	(133	)	Other income (expense)	$	—	$	—
Forward contracts	$	(1,922	)	$	643		Selling and administrative expenses	$	(1,115	)	$	(790	)	Other income (expense)	$	—	$	—
Treasury rate locks	$	—		$	—		Interest income	$	81		$	81		Other income (expense)	$	—	$	—
Income tax	$	—		$	—		Income tax (benefit) expense	$	(4	)	$	22		Income tax (benefit) expense	$	—	$	—

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Inventories

6 Months Ended

Apr. 04, 2015

Inventory, Net [Abstract]

Inventories

Inventories as of April 4, 2015 and September 27, 2014 consisted of (in thousands):

	April 4, 2015		September 27, 2014
Raw materials	$	392,553	$	371,641
Work-in-process	86,903		76,531
Finished goods	77,584		77,798
	$	557,040	$	525,970

Per contractual terms, customer deposits are received by the Company to offset obsolete and excess inventory risks. The total amount of customer deposits related to inventory and included within current liabilities on the accompanying Condensed Consolidated Balance Sheets as of April 4, 2015 and September 27, 2014 was $58.5 million and $51.0 million, respectively.

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Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Apr. 04, 2015	Sep. 27, 2014
Current assets:
Cash and cash equivalents	$ 356,296	$ 346,591
Accounts receivable, net of allowances of $1,252 and $1,188, respectively	342,163	324,072
Inventories	557,040	525,970
Deferred income tax	6,411	6,449
Prepaid expenses and other	26,929	27,757
Total current assets	1,288,839	1,230,839
Property, plant and equipment, net	323,722	334,926
Deferred income tax	3,506	3,675
Other	40,082	39,586
Assets Non Current Other	367,310	378,187
Total assets	1,656,149	1,609,026
Current liabilities:
Current portion of long-term debt and capital lease obligations	4,774	4,368
Accounts payable	407,428	396,363
Customer deposits	75,830	56,155
Deferred Tax Liabilities, Net, Current	560	647
Accrued liabilities:
Salaries and wages	39,736	52,043
Other	40,096	37,739
Total current liabilities	568,424	547,315
Long-term debt, capital lease obligations and other financing, net of current portion	260,025	262,046
Deferred income tax	5,190	5,191
Other liabilities	14,042	13,341
Total non-current liabilities	279,257	280,578
Liabilities	847,681	827,893
Shareholders' equity:
Preferred stock, $.01 par value, 5,000 shares authorized, none issued or outstanding	0	0
Common stock, $.01 par value, 200,000 shares authorized, 50,284 and 49,962 shares issued, respectively, and 33,595 and 33,653 shares outstanding, respectively	503	500
Additional paid-in capital	483,960	475,634
Common stock held in treasury, at cost, 16,689 and 16,309 shares, respectively	(494,950)	(479,968)
Retained earnings	813,058	766,385
Accumulated other comprehensive income	5,897	18,582
Total shareholders’ equity	808,468	781,133
Liabilities and Equity	$ 1,656,149	$ 1,609,026

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Shareholders' Equity

6 Months Ended

Apr. 04, 2015

Stockholders' Equity Note [Abstract]

Shareholders' Equity

On August 13, 2014, the Board of Directors approved a stock repurchase program under which the Company is authorized to repurchase up to $30.0 million of its common stock in fiscal 2015. During the three months endedApril 4, 2015, the Company repurchased 192,063 shares for approximately $7.7 million, at an average price of $40.05 per share. During the six months ended April 4, 2015, the Company repurchased 379,882 shares for approximately $15.0 million, at an average price of $39.44 per share. These shares were recorded as treasury stock. In addition, as of April 4, 2015, the Company had no commitments to purchase shares before April 4, 2015, which settled after the end of the second quarter of fiscal 2015.

On August 19, 2013, the Board of Directors approved a stock repurchase program under which the Company was authorized to repurchase up to $30.0 million of its common stock in fiscal 2014. During the three months endedMarch 29, 2014, the Company repurchased 185,117 shares for approximately $7.6 million, at an average price of $41.18 per share. During the six months ended March 29, 2014, the Company repurchased 359,001 shares for approximately $14.6 million, at an average price of $40.55 per share. These shares were recorded as treasury stock. In addition, as of March 29, 2014, the Company had a commitment of approximately $0.4 million to purchase 9,449 shares, which were purchased before March 29, 2014, but settled after the end of the second quarter of fiscal 2014.

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Document And Entity Information	6 Months Ended
	Apr. 04, 2015	May 07, 2015
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Apr. 04, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q2
Entity Registrant Name	PLEXUS CORP
Entity Central Index Key	0000785786
Current Fiscal Year End Date	--10-03
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		33,604,834

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Restructuring Costs (Notes)

6 Months Ended

Apr. 04, 2015

Restructuring Costs [Abstract]

Restructuring and Related Activities Disclosure [Text Block]

The Company did not incur any restructuring costs for the three months endedApril 4, 2015. Restructuring costs for the six months ended April 4, 2015, related to the relocation of manufacturing operations from Juarez, Mexico to Guadalajara, Mexico. These charges are recorded within restructuring costs on the Condensed Consolidated Statements of Comprehensive Income. Restructuring liabilities are recorded within other accrued liabilities on the Condensed Consolidated Balance Sheets.

For the six months ended April 4, 2015, the Company incurred restructuring costs of $1.7 million, which consisted of the following:

• $1.6 million of moving and transition costs resulting from the relocation of manufacturing operations from Juarez to Guadalajara; and

• $0.1 million of employee termination and severance costs from the reduction of the Company's workforce in Juarez.

The Company did not recognize an income tax benefit for these restructuring costs due to tax losses in the jurisdiction where the restructuring costs occurred.

The Company's restructuring accrual activity for the three months endedApril 4, 2015 is included in the table below (in thousands):

			Employee			Lease
	Fixed		Termination			Obligations
	Asset		and Severance			and Other
	Impairment		Costs			Exit Costs		Total
Accrued balance, January 3, 2015	$	—	$	62		$	—	$	62
Restructuring costs	—		—			—		—
Amounts utilized	—		(62		)	—		(62		)
Accrued balance, April 4,2015	$	—	$	—		$	—	$	—

The Company's restructuring accrual activity for the six months ended April 4, 2015 is included in the table below (in thousands):

			Employee			Lease
	Fixed		Termination			Obligations
	Asset		and Severance			and Other
	Impairment		Costs			Exit Costs			Total
Accrued balance, September 27, 2014	$	—	$	142		$	—		$	142
Restructuring costs	—		144			1,547			1,691
Amounts utilized	—		(286		)	(1,547		)	(1,833		)
Accrued balance, April 4,2015	$	—	$	—		$	—		$	—

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Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Apr. 04, 2015	Sep. 27, 2014
Statement of Financial Position [Abstract]
Accounts receivable, allowances	$ 1,252	$ 1,188
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	50,283,828	49,962,000
Common stock, shares outstanding	33,594,930	33,653,000
Treasury stock, shares	16,688,898	16,309,000

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Earnings Per Share

6 Months Ended

Apr. 04, 2015

Earnings Per Share [Abstract]

Earnings Per Share

The following is a reconciliation of the amounts utilized in the computation of basic and diluted earnings per share for the three and six months ended April 4, 2015 and March 29, 2014 (in thousands, except per share amounts):

	Three Months Ended				Six Months Ended
	April 4, 2015		March 29, 2014		April 4, 2015		March 29, 2014
Basic and Diluted Earnings Per Share:
Net income	$	23,594	$	18,516	$	46,673	$	36,179
Basic weighted average common shares outstanding	33,606		33,868		33,604		33,799
Dilutive effect of share-based awards outstanding	736		835		787		899
Diluted weighted average shares outstanding	34,342		34,703		34,391		34,698
Earnings per share:
Basic	$	0.70	$	0.55	$	1.39	$	1.07
Diluted	$	0.69	$	0.53	$	1.36	$	1.04

For the three and six months ended April 4, 2015, stock options and stock-settled stock appreciation rights ("SARs") for approximately 0.7 million shares, were not included in the computation of diluted earnings per share because the options' and stock-settled SARs' exercise prices were greater than the average market price of the Company's common shares and, therefore, their effect would be anti-dilutive.

For the three and six months ended March 29, 2014, stock options and stock-settled stock appreciation rights ("SARs") for approximately 0.5 million and 0.6 million shares, respectively, were not included in the computation of diluted earnings per share because the options' and stock-settled SARs' exercise prices were greater than the average market price of the Company's common shares and, therefore, their effect would be anti-dilutive.

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Income Taxes

6 Months Ended

Apr. 04, 2015

Income Tax Expense (Benefit), Continuing Operations [Abstract]

Income Taxes

Income tax expense for the three and six months ended April 4, 2015 was $3.2 million and $6.2 million, respectively. The effective tax rates for the three and six months ended April 4, 2015 were 12.0 percent and 11.7 percent, respectively, as compared to (7.2) percent and 2.5 percent for the three and six months ended March 29, 2014, respectively.

The change in the effective tax rate for the three and six months ended April 4, 2015 as compared to the three and six months ended March 29, 2014, was primarily the result of a net $3.7 million discrete tax benefit that occurred in the second quarter of fiscal 2014, largely related to the completion of U.S. federal and state audits. Without these discrete benefits, the effective tax rates would have been 14.4 percent and 12.8 percent for the three and six months ended March 29, 2014, respectively.

The reduction in the effective tax rates for the three and six months ended April 4, 2015 compared with the adjusted effective tax rates for the three and six months ended March 29, 2014 is largely attributed to increased earnings in low-tax jurisdictions and jurisdictions where the Company maintains valuation allowances due to historical tax losses. As demonstrated in recent quarters, the Company's effective tax rate fluctuates depending on the geographic distribution of its worldwide earnings.

There were no material additions to the amount of unrecognized tax benefits recorded for uncertain tax positions as of April 4, 2015 as compared to September 27, 2014. The Company recognizes accrued interest and penalties related to the remaining uncertain tax positions in income tax expense. The amount of interest and penalties recorded for both the three and six months ended April 4, 2015 was not material.

It is reasonably possible that a number of uncertain tax positions related to federal and state tax positions may be settled within the next 12 months. The Company is not currently under examination by taxing authorities in the U.S. or any foreign jurisdictions in which the Company has significant operations.

The Company maintains valuation allowances when it is more likely than not that all or a portion of a net deferred tax asset will not be realized. During the three and six months ended April 4, 2015, the Company continued to record a full valuation allowance against its net deferred tax assets in certain jurisdictions within the AMER and EMEA segments, as it is more likely than not that these assets will not be fully realized based primarily on historical performance. The Company will continue to provide a valuation allowance against its net deferred tax assets in each of the applicable jurisdictions going forward until the need for a valuation allowance is eliminated. The need for a valuation allowance will be eliminated when the Company determines it is more likely than not that the deferred tax assets will be realized.

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Debt, Capital Lease Obligations and Other Financing Debt (Tables)

6 Months Ended

Apr. 04, 2015

Debt Disclosure [Abstract]

Schedule Of Debt And Capital Lease Obligations [Table Text Block]

Debt, capital lease obligations and other financing amounts outstanding at April 4, 2015 and September 27, 2014 are summarized below (in thousands):

	April 4, 2015		September 27, 2014
5.20% Senior Notes, due June 15, 2018	$	175,000	$	175,000
Borrowings under revolving credit facility, due May 15, 2019	75,000		75,000
Capital lease obligations	6,689		8,414
Other financing obligation	8,110		8,000
Total debt, capital lease obligations, and other financing	264,799		266,414
Less current portion of debt, capital lease obligations, and other financing	4,774		4,368
Total debt, capital lease obligations, and other financing, less current portion	$	260,025	$	262,046

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New Accounting Pronouncements

6 Months Ended

Apr. 04, 2015

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

New Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board ("FASB") issued amended guidance for revenue recognition. The standard's core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In doing so, companies will need to use more judgment and make more estimates than under current guidance. This may include identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. This guidance is effective for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. Early adoption is not permitted. Companies have the option of using either a full or modified retrospective approach in applying this standard. The Company is currently in the process of evaluating the impact of adoption on its Consolidated Financial Statements.

In April 2014, the FASB issued final guidance that changes the criteria for a disposal to qualify as a discontinued operation and requires new disclosures of both discontinued operations and certain other disposals that do not meet the definition of a discontinued operation. The revised guidance defines a discontinued operation as (1) a component of an entity or group of components that has been disposed of by sale, disposed of other than by sale or is classified as held for sale that represents a strategic shift that has or will have a major effect on an entity's operations and financial results or (2) an acquired business or nonprofit activity that is classified as held for sale on the date of acquisition. The guidance does not change the presentation requirements for discontinued operations in the statement where net income is presented but does require the reclassification of assets and liabilities of a discontinued operation in the statement of financial position for all prior periods presented. The guidance is effective prospectively for all disposals (or classifications as held for sale) of components of an entity that occur within annual periods beginning on or after December 15, 2014, and interim periods within those years, and for all businesses that, on acquisition, are classified as held for sale that occur within annual periods beginning on or after December 15, 2014, and interim periods within those years. Early adoption is permitted, but only for disposals (or classifications as held for sale) that have not been reported in previously issued financial statements. The adoption of this guidance is not expected to have a material impact on the Company's Consolidated Financial Statements.

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Business Segments

6 Months Ended

Apr. 04, 2015

Segment Reporting [Abstract]

Business Segments

Reportable segments are defined as components of an enterprise about which separate financial information is available that is evaluated regularly by the chief operating decision maker, or group, in assessing performance and allocating resources. The Company uses an internal management reporting system, which provides important financial data to evaluate performance and allocate the Company’s resources on a regional basis. Net sales for segments are attributed to the region in which the product is manufactured or the service is performed. The services provided, manufacturing processes used, class of customers serviced and order fulfillment processes used are similar and generally interchangeable across the segments. A segment’s performance is evaluated based upon its operating income (loss). A segment’s operating income (loss) includes its net sales less cost of sales and selling and administrative expenses, but excludes corporate and other expenses. Corporate and other expenses primarily represent corporate selling and administrative expenses, and restructuring and impairment expenses, if any. These costs are not allocated to the segments, as management excludes such costs when assessing the performance of the segments. Inter-segment transactions are generally recorded at amounts that approximate arm’s length transactions. The accounting policies for the segments are the same as for the Company taken as a whole.

Information about the Company’s three reportable segments for the three and six months ended April 4, 2015 and March 29, 2014, respectively, follows (in thousands):

	Three Months Ended						Six Months Ended
	April 4, 2015			March 29, 2014			April 4, 2015			March 29, 2014
Net sales:
AMER	$	328,753		$	279,271		$	664,015		$	544,280
APAC	319,156			265,582			652,533			535,733
EMEA	35,773			32,240			63,853			59,054
Elimination of inter-segment sales	(32,397		)	(19,477		)	(64,426		)	(47,546		)
	$	651,285		$	557,616		$	1,315,975		$	1,091,521
Operating income (loss):
AMER	$	15,714		$	14,868		$	35,466		$	31,924
APAC	40,989			34,312			82,770			66,254
EMEA	(1,793		)	(1,448		)	(5,624		)	(3,913		)
Corporate expenses and other costs	(25,458		)	(28,732		)	(54,378		)	(53,504		)
	$	29,452		$	19,000		$	58,234		$	40,761
Other income (expense):
Interest expense	$	(3,383	)	$	(3,082	)	$	(7,160	)	$	(5,896	)
Interest income	788			683			1,686			1,322
Miscellaneous	(60		)	671			78			911
Income before income taxes	$	26,797		$	17,272		$	52,838		$	37,098
	April 4, 2015			September 27, 2014
Total assets:
AMER	$	537,201		$	521,259
APAC	948,779			881,426
EMEA	112,068			135,841
Corporate and eliminations	58,101			70,500
	$	1,656,149		$	1,609,026

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Stock-Based Compensation

6 Months Ended

Apr. 04, 2015

Share-based Compensation [Abstract]

Stock-Based Compensation

The Company recognized $3.4 million and $7.1 million of compensation expense associated with stock-based awards for the three and six months ended April 4, 2015, respectively, and $3.3 million and $5.9 million for the three and six months ended March 29, 2014, respectively

The Company uses the Black-Scholes valuation model to determine the fair value of stock options and stock-settled SARs. The Company uses the fair value at the date of grant to value restricted stock units ("RSUs").

The Company uses the Monte Carlo valuation model to determine the fair value of performance stock units ("PSUs") at the date of grant. The PSUs are payable in shares and vest based on the relative total shareholder return of the Company's common stock as compared to companies in the Russell 3000 Index during a three year performance period. The number of shares that may be issued pursuant to PSUs ranges from zero to 0.1 million. The Company recognizes stock-based compensation expense over the stock-based awards' vesting period.

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Litigation

6 Months Ended

Apr. 04, 2015

Litigation [Abstract]

Litigation [Text Block]

The Company is party to lawsuits in the ordinary course of business. Management does not believe that these proceedings, individually or in the aggregate, will have a material positive or adverse effect on the Company’s consolidated financial position, results of operations or cash flows.

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Guarantees

6 Months Ended

Apr. 04, 2015

Guarantees [Abstract]

Guarantees

The Company offers certain indemnifications under its customer manufacturing agreements. In the normal course of business, the Company may from time to time be obligated to indemnify its customers or its customers’ customers against damages or liabilities arising out of the Company’s negligence, misconduct, breach of contract, or infringement of third party intellectual property rights. Certain agreements have extended broader indemnification, and while most agreements have contractual limits, some do not. However, the Company generally does not provide for such indemnities and seeks indemnification from its customers for damages or liabilities arising out of the Company’s adherence to customers’ specifications or designs or use of materials furnished, or directed to be used, by its customers. The Company does not believe its obligations under such indemnities are material.

In the normal course of business, the Company also provides its customers a limited warranty covering workmanship, and in some cases materials, on products manufactured by the Company. Such warranty generally provides that products will be free from defects in the Company’s workmanship and meet mutually agreed-upon specifications for periods generally ranging from 12 months to 24 months. If a product fails to comply with the Company’s limited warranty, the Company’s obligation is generally limited to correcting, at its expense, any defect by repairing or replacing such defective product. The Company’s warranty generally excludes defects resulting from faulty customer-supplied components, design defects or damage caused by any party or cause other than the Company.

The Company provides for an estimate of costs that may be incurred under its limited warranty at the time product revenue is recognized and establishes additional reserves for specifically identified product issues. These costs primarily include labor and materials, as necessary, associated with repair or replacement and are included in the Company's accompanying Condensed Consolidated Balance Sheets in other current accrued liabilities. The primary factors that affect the Company’s warranty liability include the value and the number of shipped units and historical and anticipated rates of warranty claims. As these factors are impacted by actual experience and future expectations, the Company regularly assesses the adequacy of its recorded warranty liabilities and adjusts the amounts as necessary.

Below is a table summarizing the activity related to the Company’s limited warranty liability for fiscal 2014 and for the six months ended April 4, 2015 (in thousands):

Limited warranty liability, as of September 28, 2013	$	5,942
Accruals for warranties issued during the period	4,331
Settlements (in cash or in kind) during the period	(3,470		)
Limited warranty liability, as of September 27, 2014	6,803
Accruals for warranties issued during the period	1,111
Settlements (in cash or in kind) during the period	(1,973		)
Limited warranty liability, as of April 4, 2015	$	5,941

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Derivatives And Fair Value Measurements (Schedule Of Fair Values Of Derivative Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Apr. 04, 2015	Sep. 27, 2014
Interest Rate Swaps [Member]
Derivatives And Fair Value Measurements [Line Items]
Interest Rate Cash Flow Hedge Derivative at Fair Value, Net	$ 400	$ 200
Forward Contracts [Member]
Derivatives And Fair Value Measurements [Line Items]
Foreign Currency Contracts, Liability, Fair Value Disclosure	31	0
Prepaid Expenses And Other [Member] | Interest Rate Swaps [Member]
Derivatives And Fair Value Measurements [Line Items]
Interest Rate Cash Flow Hedge Derivative at Fair Value, Net		182
Prepaid Expenses And Other [Member] | Forward Contracts [Member]
Derivatives And Fair Value Measurements [Line Items]
Foreign Currency Contract, Asset, Fair Value Disclosure	0	1,512
Derivatives Designated As Hedging Instruments [Member] | Prepaid Expenses And Other [Member] | Forward Contracts [Member]
Derivatives And Fair Value Measurements [Line Items]
Foreign Currency Contract, Asset, Fair Value Disclosure	0	812
Derivatives Designated As Hedging Instruments [Member] | Current Liabilities - Other [Member] | Interest Rate Swaps [Member]
Derivatives And Fair Value Measurements [Line Items]
Interest Rate Cash Flow Hedge Derivative at Fair Value, Net	420	0
Derivatives Designated As Hedging Instruments [Member] | Current Liabilities - Other [Member] | Forward Contracts [Member]
Derivatives And Fair Value Measurements [Line Items]
Derivative liabilities designated as hedging instruments, Fair Value	$ 4,373	$ 0

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Inventories (Tables)

6 Months Ended

Apr. 04, 2015

Inventory, Net [Abstract]

Schedule Of Inventories

Inventories as of April 4, 2015 and September 27, 2014 consisted of (in thousands):

	April 4, 2015		September 27, 2014
Raw materials	$	392,553	$	371,641
Work-in-process	86,903		76,531
Finished goods	77,584		77,798
	$	557,040	$	525,970

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Business Segments(Tables)

6 Months Ended

Apr. 04, 2015

Segment Reporting [Abstract]

Schedule Of Financial Information About Company's Reportable Segments

Information about the Company’s three reportable segments for the three and six months ended April 4, 2015 and March 29, 2014, respectively, follows (in thousands):

	Three Months Ended						Six Months Ended
	April 4, 2015			March 29, 2014			April 4, 2015			March 29, 2014
Net sales:
AMER	$	328,753		$	279,271		$	664,015		$	544,280
APAC	319,156			265,582			652,533			535,733
EMEA	35,773			32,240			63,853			59,054
Elimination of inter-segment sales	(32,397		)	(19,477		)	(64,426		)	(47,546		)
	$	651,285		$	557,616		$	1,315,975		$	1,091,521
Operating income (loss):
AMER	$	15,714		$	14,868		$	35,466		$	31,924
APAC	40,989			34,312			82,770			66,254
EMEA	(1,793		)	(1,448		)	(5,624		)	(3,913		)
Corporate expenses and other costs	(25,458		)	(28,732		)	(54,378		)	(53,504		)
	$	29,452		$	19,000		$	58,234		$	40,761
Other income (expense):
Interest expense	$	(3,383	)	$	(3,082	)	$	(7,160	)	$	(5,896	)
Interest income	788			683			1,686			1,322
Miscellaneous	(60		)	671			78			911
Income before income taxes	$	26,797		$	17,272		$	52,838		$	37,098
	April 4, 2015			September 27, 2014
Total assets:
AMER	$	537,201		$	521,259
APAC	948,779			881,426
EMEA	112,068			135,841
Corporate and eliminations	58,101			70,500
	$	1,656,149		$	1,609,026

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Guarantees (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Apr. 04, 2015	Sep. 27, 2014
Product Warranty [Line Items]
Limited warranty liability, beginning balance	$ 6,803	$ 5,942
Accruals for warranties issued during the period	1,111	4,331
Settlements (in cash or in kind) during the period	(1,973)	(3,470)
Limited warranty liability, ending balance	$ 5,941	$ 6,803
Minimum [Member]
Product Warranty [Line Items]
Products warranty specifications period, months	12
Maximum [Member]
Product Warranty [Line Items]
Products warranty specifications period, months	24

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Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Apr. 04, 2015	Mar. 29, 2014
Cash flows from operating activities
Net income	$ 46,673	$ 36,179
Adjustments to reconcile net income to cash flows from operating activities:
Depreciation	24,602	23,345
Amortization of intangibles	0	603
Gain on sale of property, plant and equipment	(88)	(254)
Deferred income tax net expense (benefit)	108	(83)
Asset Impairment Charges	0	3,160
Stock-based compensation expense	7,095	5,907
Changes in operating assets and liabilities, excluding effects of acquisitions
Accounts receivable	(20,755)	3,679
Inventories	(34,473)	(58,381)
Other current and noncurrent assets	(5,701)	(3,533)
Accounts payable	9,436	37,422
Customer deposits	20,148	(25,448)
Other current and noncurrent liabilities	(6,331)	(2,901)
Cash flows provided by operating activities	40,714	19,695
Cash flows from investing activities
Payments for property, plant and equipment	(16,675)	(30,635)
Proceeds from sales of property, plant and equipment	103	356
Cash flows used in investing activities	(16,572)	(30,279)
Cash flows from financing activities
Proceeds from debt issuance	252,000	121,000
Payments on debt and capital lease obligations	(254,332)	(122,787)
Repurchases of common stock	(14,982)	(14,557)
Proceeds from exercise of stock options	3,946	10,833
Adjustments Related to Tax Withholding for Share-based Compensation	(2,712)	(1,567)
Cash flows used in financing activities	(16,080)	(7,078)
Effect of exchange rate changes on cash and cash equivalents	1,643	(508)
Net increase (decrease) in cash and cash equivalents	9,705	(18,170)
Cash and cash equivalents:
Beginning of period	346,591	341,865
End of period	$ 356,296	$ 323,695

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Derivatives And Fair Value Measurements

6 Months Ended

Apr. 04, 2015

Derivatives And Fair Value Measurements [Abstract]

Derivatives And Fair Value Measurements

All derivatives are recognized in the accompanying Condensed Consolidated Balance Sheets at their estimated fair value. The Company uses derivatives to manage the variability of foreign currency obligations and interest rates. The Company has cash flow hedges related to variable rate debt and forecasted foreign currency obligations, in addition to fair value hedges to manage foreign currency exposures associated with certain foreign currency denominated assets and liabilities. The Company does not enter into derivatives for speculative purposes. Changes in the fair value of the derivatives that qualify as cash flow hedges are recorded in “Accumulated other comprehensive income” in the accompanying Condensed Consolidated Balance Sheets until earnings are affected by the variability of the cash flows. Changes in the fair value of the derivatives related to recognized foreign currency denominated assets and liabilities are recorded in "Other income (expense)" in the accompanying Condensed Consolidated Statements of Comprehensive Income.

The Company enters into forward currency exchange contracts on a rolling basis. The Company had cash flow hedges outstanding with a notional value of $66.0 million as of April 4, 2015 and a notional value of $64.6 million as of September 27, 2014. These forward currency contracts fix the exchange rates for the settlement of future foreign currency obligations that have yet to be realized. The total fair value of the cash flow hedges was a $4.4 millionliability as of April 4, 2015 and a $0.8 millionasset as of September 27, 2014.

The Company had additional forward currency exchange contracts outstanding with a notional value of $4.8 million as of April 4, 2015 and a notional value of $37.9 million as of September 27, 2014. The Company has not designated these derivative instruments as hedging instruments. The net settlement amount (fair value) related to these contracts is recorded on the Condensed Consolidated Balance Sheets as either a current or long-term asset or liability, depending on the term, and as an element of other income (expense). The total fair value of these derivatives was less than a $0.1 million liability as of April 4, 2015 and a $1.5 million asset as of September 27, 2014.

On June 4, 2013, the Company entered into a $75.0 million notional amount interest rate swap contract which expires on May 5, 2017, related to $75.0 million of borrowings outstanding under its Credit Facility. This interest rate swap pays the Company variable interest at the one month LIBOR rate, and the Company pays the counterparty a fixed interest rate. The fixed interest rate for the contract is 0.875%. Based on the terms of the interest rate swap contract and the underlying borrowings outstanding under the Credit Facility, the interest rate contract was determined to be effective, and thus qualifies as a cash flow hedge. As such, any changes in the fair value of the interest rate swap are recorded in “Accumulated other comprehensive income” on the accompanying Condensed Consolidated Balance Sheets until earnings are affected by the variability of cash flows. The total fair value of the interest rate swap contract was a $0.4 million liability as of April 4, 2015 and a $0.2 million asset as of September 27, 2014. The notional amount of the Company’s interest rate swap was $75.0 million as of both April 4, 2015 and September 27, 2014.

The tables below present information regarding the fair values of derivative instruments (as defined in Note 1, "Basis of Presentation and Significant Accounting Policies") and the effects of derivative instruments on the Company’s Condensed Consolidated Financial Statements:

Fair Values of Derivative Instruments
In thousands of dollars
	Asset Derivatives					Liability Derivatives
		April 4, 2015		September 27, 2014			April 4, 2015		September 27, 2014
Derivatives designated as hedging instruments	Balance Sheet Classification	Fair Value		Fair Value		Balance Sheet Classification	Fair Value		Fair Value
Interest rate swaps	Prepaid expenses and other	$	—	$	182	Current liabilities – other	$	420	$	—
Forward contracts	Prepaid expenses and other	$	—	$	812	Current liabilities – other	$	4,373	$	—

Fair Values of Derivative Instruments
In thousands of dollars
	Asset Derivatives					Liability Derivatives
		April 4, 2015		September 27, 2014			April 4, 2015		September 27, 2014
Derivatives not designated as hedging instruments	Balance Sheet Classification	Fair Value		Fair Value		Balance Sheet Classification	Fair Value		Fair Value
Forward contracts	Prepaid expenses and other	$	—	$	1,512	Current liabilities – other	$	31	$	—

The Effect of Derivative Instruments on the Condensed Consolidated Statements of Comprehensive Income
for the Three Months Ended
In thousands of dollars
Derivatives in Cash Flow Hedging Relationships	Amount of Gain (Loss) Recognized in Other Comprehensive Income (“OCI”) on Derivative (Effective Portion)						Classification of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)						Classification of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)
	April 4, 2015			March 29, 2014				April 4, 2015			March 29, 2014				April 4, 2015		March 29, 2014
Interest rate swaps	$	(563	)	$	(77	)	Interest expense	$	(133	)	$	(133	)	Other income (expense)	$	—	$	—
Forward contracts	$	(1,922	)	$	643		Selling and administrative expenses	$	(1,115	)	$	(790	)	Other income (expense)	$	—	$	—
Treasury rate locks	$	—		$	—		Interest income	$	81		$	81		Other income (expense)	$	—	$	—
Income tax	$	—		$	—		Income tax (benefit) expense	$	(4	)	$	22		Income tax (benefit) expense	$	—	$	—

The Effect of Derivative Instruments on the Condensed Consolidated Statements of Comprehensive Income
for the Six Months Ended
In thousands of dollars
Derivatives in Cash Flow Hedging Relationships	Amount of Gain (Loss) Recognized in Other Comprehensive Income (“OCI”) on Derivative (Effective Portion)						Classification of  Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)						Classification of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded  from Effectiveness Testing)	Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)
	April 4, 2015			March 29, 2014				April 4, 2015			March 29, 2014				April 4, 2015		March 29, 2014
Interest rate swaps	$	(873	)	$	(108	)	Interest expense	$	(270	)	$	(265	)	Other income (expense)	$	—	$	—
Forward contracts	$	(6,178	)	$	(100	)	Selling and administrative expenses	$	(990	)	$	(1,040	)	Other income (expense)	$	—	$	—
Treasury rate locks	$	—		$	—		Interest income	$	167		$	160		Other income (expense)	$	—	$	—
Income tax	$	—		$	—		Income tax (benefit) expense	$	—		$	74		Income tax (benefit) expense	$	—	$	—

The following table lists the fair values of assets (liabilities) of the Company’s derivatives as of April 4, 2015 and September 27, 2014, by input level as defined in Note 1 (in thousands):

	Level 1		Level 2			Level 3		Total
April 4, 2015
Interest rate swaps	$	—	$	(420	)	$	—	$	(420	)
Foreign currency forward contracts	$	—	$	(4,404	)	$	—	$	(4,404	)
September 27, 2014
Interest rate swaps	$	—	$	182		$	—	$	182
Foreign currency forward contracts	$	—	$	2,324		$	—	$	2,324

The fair value of interest rate swaps and foreign currency forward contracts is determined using a market approach that includes obtaining directly or indirectly observable values from third parties active in the relevant markets. The primary input in the fair value of the interest rate swaps is the relevant LIBOR forward curve. Inputs in the fair value of the foreign currency forward contracts include prevailing forward and spot prices for currency and interest rate forward curves.

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Guarantees (Tables)

6 Months Ended

Apr. 04, 2015

Guarantees [Abstract]

Schedule Of Limited Warranty Liability

Below is a table summarizing the activity related to the Company’s limited warranty liability for fiscal 2014 and for the six months ended April 4, 2015 (in thousands):

Limited warranty liability, as of September 28, 2013	$	5,942
Accruals for warranties issued during the period	4,331
Settlements (in cash or in kind) during the period	(3,470		)
Limited warranty liability, as of September 27, 2014	6,803
Accruals for warranties issued during the period	1,111
Settlements (in cash or in kind) during the period	(1,973		)
Limited warranty liability, as of April 4, 2015	$	5,941

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Earnings Per Share (Schedule Of Reconciliation Of Amounts Utilized In Computation Of Basic And Diluted Earnings Per Share) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 04, 2015	Mar. 29, 2014	Apr. 04, 2015	Mar. 29, 2014
Earnings Per Share [Line Items]
Net income	$ 23,594	$ 18,516	$ 46,673	$ 36,179
Basic weighted average common shares outstanding	33,606,000	33,868,000	33,604,000	33,799,000
Dilutive effect of share-based awards outstanding	736,000	835,000	787,000	899,000
Diluted weighted average shares outstanding	34,342,000	34,703,000	34,391,000	34,698,000
Earnings per share, Basic	$ 0.70	$ 0.55	$ 1.39	$ 1.07
Earnings per share, Diluted	$ 0.69	$ 0.53	$ 1.36	$ 1.04
Stock Options [Member]
Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of diluted earnings per share	700,000	500,000	700,000	600,000

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Basis Of Presentation And Accounting Policies (Policy)

6 Months Ended

Apr. 04, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis Of Presentation

The accompanying Condensed Consolidated Financial Statements included herein have been prepared by Plexus Corp. and its subsidiaries (together “Plexus” or the “Company”) without audit and pursuant to the rules and regulations of the United States (“U.S.”) Securities and Exchange Commission (“SEC”). In the opinion of the Company, the accompanying Condensed Consolidated Financial Statements reflect all adjustments, which include normal recurring adjustments necessary for the fair statement of the consolidated financial position of the Company as of April 4, 2015 and September 27, 2014, and the results of operations for the three and six months ended April 4, 2015 and March 29, 2014, and the cash flows for the same six month periods.

Certain information and footnote disclosures, normally included in financial statements prepared in accordance with generally accepted accounting principles, have been condensed or omitted pursuant to the SEC’s rules and regulations dealing with interim financial statements. However, the Company believes that the disclosures made in the Condensed Consolidated Financial Statements included herein are adequate to make the information presented not misleading. It is suggested that these Condensed Consolidated Financial Statements be read in conjunction with the Consolidated Financial Statements and notes thereto included in the Company’s 2014 Annual Report on Form 10-K.

The Company’s reportable segments consist of the “Americas” (“AMER”) segment, “Asia-Pacific” (“APAC”) segment and “Europe, Middle East, and Africa” (“EMEA”) segment. Refer to Note 10, "Reportable Segments," for further details on reportable segments.

Cash And Cash Equivalents

Cash and cash equivalents include highly liquid investments with original maturities of three months or less at the time of purchase and are classified as Level 1 in the fair value hierarchy described below.

Fair Value Of Financial Instruments

The Company holds financial instruments consisting of cash and cash equivalents, accounts receivable, accounts payable, debt, derivatives, and capital lease obligations. The carrying values of cash and cash equivalents, accounts receivable, accounts payable, and capital lease obligations as reported in the Condensed Consolidated Financial Statements approximate fair value. Derivatives are recorded at fair value. Accounts receivable are reflected at net realizable value based on anticipated losses due to potentially uncollectible balances. Anticipated losses are based on management’s analysis of historical losses and changes in customers’ credit status. The fair value of the Company’s long-term debt was $251.7 million and $247.5 million as of April 4, 2015 and September 27, 2014, respectively. The carrying value of the Company’s long-term debt was $250.0 million as of both the periods ended April 4, 2015 and September 27, 2014. The Company uses quoted market prices when available or discounted cash flows to calculate the fair value of its debt. If measured at fair value in the financial statements, long-term debt (including the current portion) would be classified as Level 2 in the fair value hierarchy described below. Refer to Note 5, "Derivatives and Fair Value Measurements," for further details on derivatives.

Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (or exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. The accounting guidance establishes a fair value hierarchy based on three levels of inputs that may be used to measure fair value. The input levels are:

Level 1: Quoted (observable) market prices in active markets for identical assets or liabilities.

Level 2: Inputs other than Level 1 that are observable, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the asset or liability.

Level 3: Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the asset or liability.