The TYN50-800T from WeEN Semiconductors is a Silicon Controlled Rectifier with Breakover Voltage 800 V, Breakover Current 500 A, Gate Trigger Voltage 0.25 to 1.2 V, Gate Trigger Current 0.015 A, Temperature Operating Range -40 to 150 Degree C. Tags: Through Hole. More details for TYN50-800T can be seen below.