The MG600Q2YMS3 from Toshiba is a MOSFET with Continous Drain Current 600 A, Drain Source Breakdown Voltage 1200 V, Gate Source Voltage -10 to 25 V, Gate Source Threshold Voltage 3.6 to 5.6 V, Power Dissipation 2000 W. Tags: Surface Mount. More details for MG600Q2YMS3 can be seen below.