Rfsemi Technologies 

RFsemi Technologies, Inc. develops, manufactures, and sells semiconductor devices in South Korea and internationally. The company's products include ECM transistors/IC chips, MEMS microphones, ECM modules, transient voltage suppressor diodes, zener diodes, and schottky barrier diodes that are used in mobile phones, camcorders, notebooks, PDAs, headsets/ear phones, digital cameras, cordless phones, sound systems, MP3 players, PC mainboards, sound and graphic cards, accessory electrons, refrigerators, TVs, and air conditioners. It also offers LED lights, such as bulb, down, panel, spot, candle, tube, linear, high bay, ceiling, room, and street lights; and LED modules for high bay, panel and bulb type, street, down, and flood lights. RFsemi Technologies, Inc. was founded in 1999 and is headquartered in Daejeon, South Korea.