The F4-150R12KS4 from Infineon Technologies is a IGBT with Gate Emitter Voltage -20 to 20 V, Saturated Collector Emitter Voltage 3.20 to 3.85 V, DC Collector Current 150 A, Peak Collector Current 300 A, DC Forward Current 150 A. More details for F4-150R12KS4 can be seen below.