Gate to source voltage is ±20V The IRF540 has a 100V Gate-Source voltage and 33A continuous output current. To see the functions and functions of the IRF540 IRF Series MOSFET in more detail... Transistor Polarity:N Channel Continuous Drain Current Id:33A Drain Source Voltage Vds:100V On Resistance Rds(on):0., 044ohm Rds(on) Test Voltage Vgs:10V Threshold Voltage Vgs:4V No. TRANSISTOR IRF540 ORIGINAL N-Channel MOSFET TO-220 Package TO-220 Power Transistor 10pcs MOSFET Bundle Bridgold 10pcs IRF540 IRF540N TO-220 N Channel, 33 A Mosfet Transistor 33A Drain Current MOSFET Continuous drain current Id of 33A at Vgs 10V and 25°C Transistor MOSFET Canal N IRF540N 100V 33A (TO-220 On resistance Rds(on) of 44mohm at Vgs of 10V of Pins:3Pins Operating Temperature Max:175°C Package include: 10pcs*IRF540