The IRFPG40 from Vishay is a MOSFET with Continous Drain Current 4.3 A, Drain Source Resistance 3500 milliohm, Drain Source Breakdown Voltage 1000 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Through Hole. More details for IRFPG40 can be seen below.