IXYS Corporation is an integrated semiconductor company. It specializes in the development, manufacture and marketing power semiconductors, advanced mixed-signal integrated circuits (ICs), application specific integrated circuits (ASICs), microcontrollers, systems and radio frequency (RF), and power semiconductors. The Company's power semiconductor products have two primary categories: power MOS, or metal-oxide-silicon, and power bipolar products. During the fiscal year ended March 31, 2012 (fiscal 2012), power semiconductors constituted approximately 75.5% of the Company�s revenues, which included 26.1% of revenues from power MOS transistors and 49.4% of revenues from bipolar products. It designs and sells ICs that has applications in telecommunications, display, power management, security systems and appliances. In fiscal 2012, ICs constituted approximately 17.3% of its revenues. In fiscal 2012, system and RF semiconductors constituted approximately 7.2% of the Company's revenues.