The IXFT400N075T2 from Littelfuse is a MOSFET with Continous Drain Current 400 A, Drain Source Resistance 2.3 Milliohm, Drain Source Breakdown Voltage 75 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for IXFT400N075T2 can be seen below.