The IXFT120N30X3HV 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: Surface Mount. More details for IXFT120N30X3HV can be seen below.