The FF150R12KS4_B2 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 FF150R12KS4_B2 can be seen below.