Introduction: Westcode Semiconductor is a global manufacturer of high-performance power semiconductor products. The company is located in Chippenham, UK and has a long history of producing semiconductor devices. It began producing copper oxide rectifiers in the 1920s and released the first generation of silicon power devices in 1957. The company currently has the world's most advanced equipment for producing silicon power devices, using solid-state diffusion technology to produce a series of silicon power devices, including thyristors, diodes, power transistors, GTOs, and corresponding heat dissipation devices. The product is applied to AC/DC drivers, rectifier power supplies UPS、 Welding equipment, induction heating, and railway traction, etc. Many countries around the world have adopted the company's power devices for their electric locomotive equipment.