The IXFK52N100X from Littelfuse is a MOSFET with Continous Drain Current 52 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: Through Hole. More details for IXFK52N100X can be seen below.