The FZ1800R45HL4 from Infineon Technologies is a IGBT with Gate Emitter Voltage -20 to 20 V, Saturated Collector Emitter Voltage 2.35 to 3.50 V, DC Collector Current 1800 A, Peak Collector Current 3600 A, DC Forward Current 1800 A. More details for FZ1800R45HL4 can be seen below.