The G38KAC from Greegoo Electric is a Silicon Controlled Rectifier with Breakover Voltage 800 to 1100 V, Breakover Current 4800 A, Gate Trigger Voltage 0.8 to 3.0 V, Gate Trigger Current 30 to 250 mA, Temperature Operating Range -40 to 115 Degree C. Tags: Disc. More details for G38KAC can be seen below.