The IXFB150N65X2 from Littelfuse is a MOSFET with Continous Drain Current 150 A, Drain Source Resistance 17 Milliohm, Drain Source Breakdown Voltage 650 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 3.5 to 5 V. Tags: Surface Mount. More details for IXFB150N65X2 can be seen below.