The DCR1710F18 from Dynex Semiconductor is a Silicon Controlled Rectifier with Breakover Voltage 1800 V, Breakover Current 25000 A, Gate Trigger Voltage 3.0 V, Gate Trigger Current 300 mA, Temperature Operating Range -40 to 140 Degree C. Tags: Disc. More details for DCR1710F18 can be seen below.