The IXTT4N150HV from Littelfuse is a MOSFET with Continous Drain Current 4 A, Drain Source Resistance 6000 Milliohm, Drain Source Breakdown Voltage 1500 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 2.5 to 5 V. Tags: Surface Mount. More details for IXTT4N150HV can be seen below.