The MCR25MHR from Digitron Semiconductors is a Silicon Controlled Rectifier with Breakover Voltage 600 V, Breakover Current 300 A, Gate Trigger Voltage 0.5 to 1.0 V, Gate Trigger Current 4.0 to 30 mA, Temperature Operating Range -40 to 125 Degree C. Tags: Through Hole. More details for MCR25MHR can be seen below.