The SMG5C60D from SanRex is a Silicon Controlled Rectifier with Breakover Voltage 600 V, Breakover Current 80 to 88 A, Gate Trigger Voltage 1.4 V, Gate Trigger Current 10 mA, Temperature Operating Range -40 to 125 Degree C. Tags: Surface Mount. More details for SMG5C60D can be seen below.