The QJ4008VH4TP from Littelfuse is a Triac with Breakover Voltage 400 V, Breakover Current 8 A, Gate Trigger Voltage 1.5 V, Gate Trigger Current 0.035 A, Temperature Operating Range -40 to 150 Degree C. Tags: Surface Mount. More details for QJ4008VH4TP can be seen below.