The VS-40TPS08-M3 with SCRs New Input Thyristor - TO-247-e3 is a high-speed switching device manufactured by Vishay. It is designed for operation in power supplies, AC and DC motor control, relay and fan control, temperature control, and other similar applications. This device features an extremely low firing angle of 4.4º, maximum off-state voltage of 600V, blocking voltage of 800V, on-state current of 40A, and a maximum repetitive peak off-state current of 40A. It also features four Gate-triggering lead pins for gate protection. This device is very efficient and is protected against excessive temperature.