The 2MBI1000XXB170-50 from Fuji Electric is a IGBT with Gate Emitter Voltage -20 to 20 V, Saturated Collector Emitter Voltage 1.65 to 2.15 V, DC Collector Current 1000 A, Peak Collector Current 2000 A, DC Forward Current 1000 A. More details for 2MBI1000XXB170-50 can be seen below.