The IRFI9640G from Vishay is a MOSFET with Continous Drain Current -6.1 A, Drain Source Resistance 500 milliohm, Drain Source Breakdown Voltage -200 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage -2 to -4 V. Tags: Through Hole. More details for IRFI9640G can be seen below.