The SKT 300/12E from Semikron Danfoss is a Silicon Controlled Rectifier with Breakover Voltage 1200 V, Breakover Current 10000 to 11000 A, Gate Trigger Voltage 3 V, Gate Trigger Current 200 mA, Temperature Operating Range -40 to 130 Degree C. Tags: Screw Mount. More details for SKT 300/12E can be seen below.