Sanken Electric Co., Ltd. engages in the manufacture, sale and purchase of electric equipment and apparatus. It operates through the following segments: Semiconductor Devices, Power Modules, and Power Systems. The Semiconductor Devices segment provides power integrated circuits, bipolar transistors, rectifier diodes, and light-emitting diodes. The Power Modules segment produces switching power supplies and transformers. The Power Systems segment offers direct current power supplies, aircraft warning lights, uninterruptible power supplies, and general purpose inverters for industrial motors. It also provides electronic works, telecommunication works and other construction works. The company was founded by Tetsuji Kotani on September 5, 1946 and is headquartered in Niiza, Japan.