Segment Information

6 Months Ended

Sep. 30, 2011

Operating Segment And Geographic Information Abstract

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				Six Months Ended
		September 30,				September 30,
			2011		2010	2011		2010

		(unaudited)				(unaudited)
United States		$	27,562	$	26,754	$	55,267	$	51,263
Europe and the Middle East
	France		1,915		1,606		3,946		3,113
	Germany		12,888		9,903		26,304		19,103
	United Kingdom		8,430		7,916		16,432		14,229
	Other		13,643		11,329		27,783		21,610
Asia Pacific
	China		16,971		15,404		35,536		32,059
	Japan		2,607		3,312		4,695		6,757
	Korea		3,004		2,646		6,949		5,074
	Singapore		3,101		2,803		5,585		5,278
	Taiwan		1,765		2,629		3,997		4,945
	Other		2,753		2,738		5,242		5,149
Rest of the World
	India		2,425		1,710		5,254		3,246
	Other		1,940		1,160		3,792		2,959
Total		$	99,004	$	89,910	$	200,782	$	174,785

The following table sets forth net revenues for each of our product groups for the three and six months ended September 30, 2011 and 2010 (in thousands):

	Three Months Ended September 30,				Six Months Ended September 30,
		2011		2010		2011		2010

		(unaudited)				(unaudited)
Power semiconductors	$	74,731	$	61,243	$	151,195	$	118,511
Integrated circuits		16,949		22,295		35,060		44,475
Systems and RF power semiconductors		7,324		6,372		14,527		11,799
Total	$	99,004	$	89,910	$	200,782	$	174,785

For the three and six months ended September 30, 2011, one distributor accounted for 11.8% and 12.3% of our net revenues, respectively, and another distributor accounted for 11.2% and 11.1% of our net revenues, respectively. For the three and six months ended September 30, 2010, one distributor accounted for 12.9% and 13.4% of our net revenues, respectively, and another distributor accounted for 10.4% and 10.8% of our net revenues, respectively.