The DCR2880B55 from Dynex Semiconductor is a Silicon Controlled Rectifier with Breakover Voltage 5500 V, Breakover Current 38900 A, Gate Trigger Voltage 1.5 V, Gate Trigger Current 400 mA, Temperature Operating Range -55 to 125 Degree C. Tags: Disc. More details for DCR2880B55 can be seen below.