The CPS053-2N5064 from Central Semiconductor is a Silicon Controlled Rectifier with Breakover Voltage 200 V, Breakover Current 0.8 A, Gate Trigger Voltage 0.8 V, Gate Trigger Current 0.0002 A, Temperature Operating Range -65 to 125 Degree C. Tags: Surface Mount. More details for CPS053-2N5064 can be seen below.