Vishay Irf830Bpbf.
MOSFET, N-CH, 500V, 5.3A, TO-220AB; Transistor Polarity:N Channel; Drain Source Voltage Vds:500V; Continuous Drain Current Id:5.3A; On Resistance Rds(on):1.2ohm; Transistor Mounting:Through Hole; Rds(on) Test Voltage Vgs:10V; MSL:-