Sanken Electric

In 1937, as part of the 50th anniversary project of the former Toho Electric Power Co., Ltd., the Toho Industrial Research Institute was invited by the late Yasuzaemon Matsunaga, president of the company at the time, to develop industries that would actually benefit society. It was created with the intention of doing In 1946, the late Tetsuji Kotani, chief of the semiconductor research laboratory at the same research institute, established Toho Sanken Denki Co., Ltd., taking over the engineers and equipment of the research institute, which was dissolved after the end of the war. In 1962, the company name was changed to the current name, Sanken Electric Co., Ltd.

Founded a factory specializing in semiconductors with the results of cuprous oxide and selenium rectifiers that have continued since the laboratory days. In 1958, we succeeded in making prototypes of thermal diffusion silicon diodes, which were groundbreaking in the world at the time, followed by silicon power transistors. Since then, we have grown together with the electronics industry, established a solid position as a manufacturer in the power electronics field, and grasped the changes of the times. We have provided solutions.

We have been and will continue to supply unique and advanced products and strive to be a prominent innovator in the field of power electronics.