The IRFI540G from Vishay is a MOSFET with Continous Drain Current 17 A, Drain Source Resistance 77 milliohm, Drain Source Breakdown Voltage 100 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Through Hole. More details for IRFI540G can be seen below.