The 2MBI450XNB170-50 from Fuji Electric is a IGBT with Gate Emitter Voltage -20 to 20 V, Saturated Collector Emitter Voltage 1.6 to 2.55 V, DC Collector Current 450 A, Peak Collector Current 900 A, DC Forward Current 450 A. More details for 2MBI450XNB170-50 can be seen below.