The 4MBI400VF-120R-50 from Fuji Electric is a IGBT with Gate Emitter Voltage -20 to 20 V, Saturated Collector Emitter Voltage 2 to 2.6 V, DC Collector Current 400 to 800 A, Junction Temperature 150 Degree C, Gate Emitter Leakage Current 0.4 uA. More details for 4MBI400VF-120R-50 can be seen below.