The NTE5586 from NTE Electronics is a Silicon Controlled Rectifier with Breakover Voltage 600 V, Breakover Current 5970 A, Gate Trigger Voltage 1.2 to 3 V, Gate Trigger Current 0.04 to 0.18 A, Temperature Operating Range -40 to 125 Degree C. Tags: Screw Mount. More details for NTE5586 can be seen below.