The T6421NHR from Digitron Semiconductors is a Military-Grade Bidirectional Triode Thyristor that is ideal for high-reliability applications. It has a break-over voltage of up to 800 V and a break-over current of less than 300 A. This thyristor has a gate trigger voltage of 1.35 V and a gate trigger current of 20 mA. It is compliant with MIL-PRF-19500 military standards to ensure high-withstanding capability in harsh operating environments. This triac is available in a stud-mount package that measures 1.735 x 0.559 inches.