The IXFN52N100X from Littelfuse is a MOSFET with Continous Drain Current 44 A, Drain Source Resistance 125 Milliohm, Drain Source Breakdown Voltage 1000 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 3.5 to 6 V. Tags: Chassis Mount. More details for IXFN52N100X can be seen below.