The TISP7290F3 from Bourns is a Silicon Controlled Rectifier with Breakover Voltage 290 V, Breakover Current 0.8 A, Gate Trigger Voltage 220 V, Gate Trigger Current 4.3 A, Temperature Operating Range 0 to 70 Degree C. Tags: Surface Mount. More details for TISP7290F3 can be seen below.