The IXFN320N17T2 from Littelfuse is a MOSFET with Continous Drain Current 260 A, Drain Source Resistance 5.2 Milliohm, Drain Source Breakdown Voltage 170 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2.5 to 5 V. Tags: Chassis Mount. More details for IXFN320N17T2 can be seen below.