The MCR08MT1G from Littelfuse is a Silicon Controlled Rectifier with Breakover Voltage 600 V, Breakover Current 0.8 A, Gate Trigger Voltage 0.8 V, Gate Trigger Current 0.0002 A, Temperature Operating Range -40 to 110 Degree C. Tags: Surface Mount. More details for MCR08MT1G can be seen below.