Alpha & Omega Semiconductor Ltd. engages in the construction and operation of power semiconductor packaging, testing, and wafer fabrication facilities. The company is headquartered in Sunnyvale, California. The company went IPO on 2010-04-29. Its portfolio of products targets high-volume applications, including personal computers, graphic cards, game consoles, flat panel televisions (TV), home appliances, power tools, smart phones, battery packs, consumer and industrial motor controls and power supplies for TVs, computers, servers and telecommunications equipment. Its product portfolio consists of two categories: power discrete and power ICs that serve the large and diverse analog market for power semiconductors. Its power discrete products consist of low, medium and high voltage power MOSFETs. Its power ICs deliver power and control and regulate the power management variables, such as the flow of current and level of voltage. Its portfolio of power semiconductors includes approximately 2,700 products. The company conducts its operations in the United States of America, Hong Kong, China, and South Korea.