The IXFH50N85X from Littelfuse is a MOSFET with Continous Drain Current 50 A, Drain Source Resistance 105 Milliohm, Drain Source Breakdown Voltage 850 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 3.5 to 5.5 V. Tags: Through Hole. More details for IXFH50N85X can be seen below.