The MG800FXF1ZMS3 from Toshiba is a MOSFET with Continous Drain Current 800 A, Drain Source Resistance 2.75 ohm, Drain Source Breakdown Voltage 3300 V, Gate Source Voltage -10 to 25 V, Gate Source Threshold Voltage 4.8 V. Tags: Module. More details for MG800FXF1ZMS3 can be seen below.