The TIC108M from Comset Semiconductors is a Silicon Controlled Rectifier with Breakover Voltage 600 V, Breakover Current 20 A, Gate Trigger Voltage 0.2 to 1.2 V, Gate Trigger Current 0.2 to 200 µA, Temperature Operating Range -40 to 110 Degree C. Tags: Through Hole. More details for TIC108M can be seen below.