The NTE5661 from NTE Electronics is a Triac with Breakover Voltage 50 V, Breakover Current 100 A, Gate Trigger Voltage 0.9 to 2 V, Gate Trigger Current 0.04 to 0.05 A, Temperature Operating Range -40 to 100 Degree C. Tags: Stud Mount. More details for NTE5661 can be seen below.