PFC Device Inc., together with its subsidiaries, engages in the research and development, design, manufacture, and sale of power discrete semiconductors under the PFC brand name in China, Hong Kong, Taiwan, and other Asian countries. It offers rectifiers, MOSFETs, IGBTs, bridge rectifiers, and packaging products for general power, consumer, industrial, and automotive applications. The company also provides power supply products; package products for mobile phone charger; and power supply applications for network and communication. In addition, it engages in investment and trade mark holding activities.