The VS-40TPS12AP-S1 is a TRIACs ROHS manufactured by Vishay. It is a surface mount, three terminal, TO-247AC-3 package, low-power bidirectional AC switch. It is designed to control and domestic appliances, soft-start motor controls, and HVAC systems in industrial applications. It features an Everlight-enhanced avalanche capability, a turn- on time of less than 500 µs and a fast turn-off time of less than 15 µs, making it suitable for use in fast-switching applications. For safety and reliability, it has maximum ratings of 400V at 10A and IPM (Integrated Power Module) technology. The device is available in bulk or tube packaging and is RoHS compliant.