The IXTN400N20X4 from Littelfuse is a MOSFET with Continous Drain Current 340 A, Drain Source Resistance 3 ohm, Drain Source Breakdown Voltage 200 V, Gate Charge 348 nC, Power Dissipation 830 W. Tags: Screw Mount. More details for IXTN400N20X4 can be seen below.