The GT30J122A from Toshiba is a IGBT with Gate Emitter Voltage 25 V, Saturated Collector Emitter Voltage 1.7 to 2.8 V, DC Collector Current 30 A, Junction Temperature 150 Degree C, Gate Emitter Leakage Current 0.1 uA. More details for GT30J122A can be seen below.