The IXTN40P50P from Littelfuse is a MOSFET with Continous Drain Current -40 A, Drain Source Resistance 230 milliohm, Drain Source Breakdown Voltage -500 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage -4.5 to -2 V. Tags: Chassis Mount. More details for IXTN40P50P can be seen below.