The SKT 1200/18 E from Semikron Danfoss is a Silicon Controlled Rectifier with Breakover Voltage 1800 V, Breakover Current 25500 to 30000 A, Gate Trigger Voltage 3 V, Gate Trigger Current 250 mA, Temperature Operating Range -40 to 125 Degree C. Tags: Disc. More details for SKT 1200/18 E can be seen below.