The T700103004BY from Powerex is a Silicon Controlled Rectifier with Breakover Voltage 1000 V, Breakover Current 8400 to 10000 A, Gate Trigger Voltage 3 V, Gate Trigger Current 0.15 A, Temperature Operating Range -40 to 125 Degree C. Tags: Screw Mount. More details for T700103004BY can be seen below.