Note 14 Segment Information

9 Months Ended

Dec. 31, 2011

Operating Segment And Geographic Information [Abstract]

Segment Reporting Disclosure Text Block

14. Segment Information

We have a single operating segment. This operating segment is comprised of semiconductor products used primarily in power-related applications. While we have separate legal subsidiaries with discrete financial information, we have one chief operating decision maker with highly integrated businesses. Our net revenues by major geographic area (based on destination) were as follows (in thousands):

		Three Months Ended				Nine Months Ended
		December 31,				December 31,
			2011		2010	2011		2010
		(unaudited)				(unaudited)
United States		$	21,751	$	23,521	$	77,018	$	74,785
Europe and the Middle East
	France		1,936		1,972		5,882		5,085
	Germany		9,665		10,493		35,969		29,596
	United Kingdom		6,809		6,941		23,241		21,169
	Other		12,582		12,984		40,365		34,595
Asia Pacific
	China		13,328		18,770		48,864		50,829
	Japan		1,817		2,683		6,512		9,439
	Korea		2,523		2,238		9,472		7,312
	Singapore		2,324		3,177		7,909		8,455
	Taiwan		1,550		2,546		5,547		7,491
	Other		2,910		2,739		8,152		7,888
Rest of the World
	India		1,204		2,451		6,458		5,697
	Other		1,642		1,212		5,434		4,171
Total		$	80,041	$	91,727	$	280,823	$	266,512

The following table sets forth net revenues for each of our product groups for the three and nine months endedDecember 31,2011 and 2010 (in thousands):

	Three Months Ended December 31,				Nine Months Ended December 31,
		2011		2010		2011		2010
		(unaudited)				(unaudited)
Power semiconductors	$	60,101	$	63,563	$	211,296	$	182,074
Integrated circuits		13,653		20,267		48,713		64,742
Systems and RF power semiconductors		6,287		7,897		20,814		19,696
Total	$	80,041	$	91,727	$	280,823	$	266,512

For the three and nine months ended December 31, 2011, one distributor accounted for 11.3% and 12.0% of our net revenues, respectively. For the nine months ended December 31, 2011, another distributor accounted for 10.5% of our net revenues. For the three and nine months ended December 31, 2010, one distributor accounted for 12.7% and 12.3% of our net revenues, respectively, and another distributor accounted for 10.9% and 11.7% of our net revenues, respectively.