The MS T100S02UB from MS Power is a Silicon Controlled Rectifier with Breakover Voltage 200 V, Breakover Current 1800 to 1900 A, Gate Trigger Voltage 3.0 V, Gate Trigger Current 150 mA, Temperature Operating Range -40 to 125 Degree C. Tags: Stud Mount. More details for MS T100S02UB can be seen below.