The MCR100-8-23 from FuxinSemi Semiconductor is a Silicon Controlled Rectifier with Breakover Voltage 600 V, Breakover Current 8 A, Gate Trigger Voltage 0.8 V, Gate Trigger Current 200 uA, Temperature Operating Range -40 to 125 Degree C. Tags: Surface Mount. More details for MCR100-8-23 can be seen below.