The STGWT20IH125DF from STMicroelectronics is a IGBT with Gate Emitter Voltage -20 to 20 V, Saturated Collector Emitter Voltage 2 to 2.5 V, DC Collector Current 20 to 40 A, DC Forward Current 20 to 40 A, Junction Temperature -55 to 175 Degree C. More details for STGWT20IH125DF can be seen below.