The DIM800XSM45-TF001 from Dynex Semiconductor is a IGBT with Gate Emitter Voltage -20 to 20 V, Saturated Collector Emitter Voltage 3.5 to 4.4 V, DC Collector Current 800 A, Peak Collector Current 1600 A, DC Forward Current 800 A. More details for DIM800XSM45-TF001 can be seen below.