The IRF540 from First Silicon is a MOSFET with Continous Drain Current 27 A, Drain Source Resistance 34 to 44 milli-ohm, Drain Source Breakdown Voltage 100 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2.0 to 4.0 V. Tags: Through Hole. More details for IRF540 can be seen below.