MOSFET, N, TO-220; Transistor Polarity:N Channel; Continuous Drain Current Id:8A; Drain Source Voltage Vds:500V; On Resistance Rds(on):650mohm; Rds(on) Test Voltage Vgs:10V; Threshold Voltage Vgs Typ:4V; Power Dissipation Pd:134W; Transistor Case Style:TO-220; No. of Pins:3; SVHC:No SVHC (20-Jun-2011); Current Id Max:8A; Current Temperature:25°C; Device Marking:IRF840B; External Length / Height:4.83mm; External Width:10.67mm; Full Power Rating Temperature:25°C; No. of Transistors:1; On State Resistance Max:800mohm; Package / Case:TO-220; Power Dissipation Pd:134W; Power Dissipation Pd:134W; Pulse Current Idm:32A; Termination Type:Through Hole; Voltage Vds Typ:500V; Voltage Vgs Max:4V; Voltage Vgs Rds on Measurement:10V; Voltage Vgs th Max:4V