The MS T1535C03 from MS Power is a Silicon Controlled Rectifier with Breakover Voltage 300 V, Breakover Current 20000 to 21000 A, Gate Trigger Voltage 3.0 V, Gate Trigger Current 200 mA, Temperature Operating Range -40 to 140 Degree C. Tags: Disc. More details for MS T1535C03 can be seen below.