The VS-25RIA20 from Vishay is a Medium Power Phase Control Thyristor. This thyristor has a peak off-state voltage of 200 V and a surge current of 440 A. It requires a gate trigger voltage of 2 V and a gate trigger current of less than 60 mA. This thyristor is designed with improved glass passivation for high reliability and stability at high temperatures. It offers high dI/dt and dV/dt capabilities and has low thermal resistance, making it suitable for industrial and consumer applications. This RoHS-compliant thyristor is available in a stud mount package that measures 40.9 mm in length and is suitable for medium power switching and phase control applications.