Alpha and Omega Semiconductor Limited, together with its subsidiaries, designs, develops, and supplies a portfolio of power semiconductors for consumer, computing, communications, and industrial markets primarily in the United States, Hong Kong, Macau, China, Taiwan, South Korea, and Japan. It offers various power discrete products, including low, medium, and high voltage power metal-oxide-semiconductor field-effect transistors (MOSFETs); and SRFETs, XSFET, electrostatic discharges, protected MOSFETs, and insulated gate bipolar transistors, which are used for routing current and switching voltages in power control circuits. The company also provides power IC products comprising devices that are used for power management and power delivery; and analog power devices that are used for circuit protection and signal switching. Its power discrete products are used in applications, such as notebooks, ultrabooks, desktop and tablet PC's, servers, flat panel displays, TVs, graphics cards, game boxes, chargers, battery packs, AC adapters, power supplies, e-bikes, motor control, smart phones and other portable devices, white goods and industrial motor drives, UPS systems, wind turbines, solar inverters, and industrial welding; and power ICs have applications in flat panel displays, TVs, notebooks, ultrabooks, servers, DVD/Blu-Ray players, set-top boxes, and networking equipments, as well as desktop PCs tablets, smartphones, and portable electronic devices. The company markets its products directly, as well as through distributors and original design manufacturers to original equipment manufacturers. Alpha and Omega Semiconductor Limited were incorporated 2000 and is headquartered in Sunnyvale, California.