The IXFN44N80P from Littelfuse is a MOSFET with Continous Drain Current 39 A, Drain Source Resistance 190 Milliohm, Drain Source Breakdown Voltage 800 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 3 to 5 V. Tags: Chassis Mount. More details for IXFN44N80P can be seen below.