Geographic Information and Concentration of Risk

12 Months Ended

Jan. 27, 2013

Risks and Uncertainties [Abstract]

Geographic Information and Concentration of Risk

Geographic Information and Concentration of Risk

The Company operates exclusively in the semiconductor industry and primarily within the analog and mixed-signal sector.

The table below provides net sales activity by product line on a comparative basis for all periods. As a result of the acquisition of Gennum and Cycleo (see Note 3) in March 2012, the Company formed a separate Gennum product line while Cycleo is part of the Wireless and Sensing product line.

	Fiscal Year Ended
(in thousands, except percentages)	January 27, 2013				January 29, 2012				January 30, 2011
Advanced Communications	$	133,533	23	%	$	139,695	29	%	$	112,019	25	%
Wireless and Sensing	50,444		9	%	57,124		12	%	59,107		13	%
Power Management and High Reliability	66,427		12	%	74,056		15	%	87,693		19	%
Protection	198,866		34	%	209,726		44	%	195,683		43	%
Gennum	129,557		22	%	—		—	%	—		—	%
Total net sales	$	578,827	100	%	$	480,601	100	%	$	454,502	100	%

Net sales activity by geographic region is as follows:

	Fiscal Year Ended
(in thousands, except percentages)	January 27, 2013				January 29, 2012				January 30, 2011
North America	$	98,401	17	%	$	114,552	24	%	$	112,404	25	%
Asia-Pacific	405,179		70	%	298,477		62	%	272,079		60	%
Europe	75,247		13	%	67,572		14	%	70,019		15	%
Total net sales	$	578,827	100	%	$	480,601	100	%	$	454,502	100	%

The Company generally attributes sales to a country based on the ship-to address. The table below summarizes sales activity to countries that represented greater than 10% of total net sales for at least one of the periods indicated:

	Fiscal Year Ended
(percentage of total sales)	January 27, 2013		January 29, 2012		January 30, 2011
United States	17	%	20	%	23	%
China (including Hong Kong)	35	%	38	%	34	%
Japan	10	%	8	%	7	%
South Korea	7	%	8	%	10	%
Total net sales	69	%	74	%	74	%

The Company’s regional income (loss) from continuing operations before income taxes is as follows:

	Fiscal Year Ended
(in thousands)	January 27, 2013			January 29, 2012			January 30, 2011
Domestic	$	(19,867	)	$	(3,070	)	$	(12,540	)
Foreign	20,116			97,249			91,872
Total	$	249		$	94,179		$	79,332

Domestic (loss) from continuing operations includes amortization of acquired intangible assets, litigation related expenses and higher levels of stock-based compensation compared to foreign operations.

Long-lived Assets

Long-lived assets which consist of property, plant and equipment, net of accumulated depreciation are summarized as follows:

(in thousands)	January 27, 2013		January 29, 2012
Located within the United States	$	53,858	$	47,612
Located outside the United States	47,979		22,101
	$	101,837	$	69,713

Some of these assets are at locations owned or operated by the Company’s suppliers. The Company has consigned certain equipment to a foundry based in China to support its specialized processes run at the foundry. The Company has also installed its own equipment at some of its packaging and testing subcontractors in order to ensure a certain level of capacity, assuming the subcontractor has ample employees to operate the equipment.

The amount of equipment and machinery consigned to a foundry in China was $7.9 million and $9.4 million as of January 27, 2013 and January 29, 2012, respectively.

Significant Customers

Sales to the Company’s customers are generally made on open account, subject to credit limits the Company may impose, and the receivables are subject to the risk of being uncollectible.

Each of the following significant customers accounted for at least 10% of net sales for at least one of the periods indicated:

	Fiscal Year Ended
(percentage of net sales)	January 27, 2013		January 29, 2012		January 30, 2011
Samsung Electronics (and affiliates)	12	%	13	%	12	%
Huawei Technologies (and affiliates)	10	%	7	%	8	%
Frontek Technology Corp	6	%	10	%	11	%

The following table shows the list of customers that have an outstanding receivable balance that represents at least 10% of total net receivables for at least one of the periods indicated:

	Balance as of
(percentage of net accounts receivable)	January 27, 2013		January 29, 2012
Huawei Technologies (and affiliates)	14	%	11	%
Samsung Electronics (and affiliates)	12	%	14	%
Frontek Technology Corp	4	%	10	%
Dragon Technology	3	%	11	%

Outside Subcontractors and Suppliers

The Company relies on a limited number of outside subcontractors and suppliers for the production of silicon wafers, packaging and certain other tasks. Disruption or termination of supply sources or subcontractors, due to natural disasters such as an earthquake or other causes, could delay shipments and could have a material adverse effect on the Company. Although there are generally alternate sources for these materials and services, qualification of the alternate sources could cause delays sufficient to have a material adverse effect on the Company. Several of the Company’s outside subcontractors and suppliers, including third-party foundries that supply silicon wafers, are located in foreign countries, including China, Taiwan, Canada, Europe and Israel. The Company’s largest source of silicon wafers is an outside foundry located in China and a significant amount of the Company’s assembly and test operations are conducted by third-party contractors in China, Malaysia, Korea and the Philippines.