The NTE5448 from NTE Electronics is a Silicon Controlled Rectifier with Breakover Voltage 600 V, Breakover Current 80 A, Gate Trigger Voltage 0.2 to 2.5 V, Gate Trigger Current 0.007 to 0.06 A, Temperature Operating Range -40 to 100 Degree C. Tags: Through Hole. More details for NTE5448 can be seen below.