The DCR5900A22 from Dynex Semiconductor is a Silicon Controlled Rectifier with Breakover Voltage 2200 V, Breakover Current 80000 A, Gate Trigger Voltage 3.0 V, Gate Trigger Current 300 mA, Temperature Operating Range -40 to 140 Degree C. Tags: Disc. More details for DCR5900A22 can be seen below.