The 1MBI400HH-120L-50 from Fuji Electric is a IGBT with Gate Emitter Voltage -20 to 20 V, Saturated Collector Emitter Voltage 3.1 to 4.3 V, DC Collector Current 600 to 1200 A, DC Forward Current 400 to 800 A, Junction Temperature 150 Degree C. More details for 1MBI400HH-120L-50 can be seen below.