The FS300R12OE4_B81 from Infineon Technologies is a IGBT with Gate Emitter Voltage -20 to 20 V, Saturated Collector Emitter Voltage 1.76 to 2.10 V, DC Collector Current 300 A, Peak Collector Current 1200 A, DC Forward Current 300 A. More details for FS300R12OE4_B81 can be seen below.