The 2N5442HR from Digitron Semiconductors is a Triac with Breakover Voltage 400 V, Breakover Current 265 to 300 A, Gate Trigger Voltage 0.2 to 3.4 V, Gate Trigger Current 15 to 240 mA, Temperature Operating Range -65 to 110 Degree C. Tags: Stud Mount. More details for 2N5442HR can be seen below.