The NTE5470 from NTE Electronics is a Silicon Controlled Rectifier with Breakover Voltage 50 V, Breakover Current 100 A, Gate Trigger Voltage 0.2 to 2.5 V, Gate Trigger Current 0.01 to 0.06 A, Temperature Operating Range -40 to 100 Degree C. Tags: Stud Mount. More details for NTE5470 can be seen below.