The MCR100G-4-T92-K from Unisonic Technologies is a Silicon Controlled Rectifier with Breakover Voltage 200 V, Breakover Current 10 A, Gate Trigger Voltage 0.8 to 1.2 V, Gate Trigger Current 100 uA, Temperature Operating Range -40 to 110 Degree C. Tags: Through Hole. More details for MCR100G-4-T92-K can be seen below.