The TIC126S from Comset Semiconductors is a Silicon Controlled Rectifier with Breakover Voltage 700 V, Breakover Current 100 A, Gate Trigger Voltage 0.2 to 2.5 V, Gate Trigger Current 5 to 20 mA, Temperature Operating Range -40 to 110 Degree C. Tags: Through Hole. More details for TIC126S can be seen below.