The GT20N135SRA from Toshiba is a IGBT with Gate Emitter Voltage 25 V, Saturated Collector Emitter Voltage 1.60 to 2.40 V, DC Collector Current 20 to 40 A, DC Forward Current 20 to 40 A, Junction Temperature 175 Degree C. More details for GT20N135SRA can be seen below.