The IXFH120N30X3 from Littelfuse is a MOSFET with Continous Drain Current 120 A, Drain Source Resistance 11 Milliohm, Drain Source Breakdown Voltage 300 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2.5 to 4.5 V. Tags: Through Hole. More details for IXFH120N30X3 can be seen below.