The GD50HHU120C5S from StarPower is a IGBT with Gate Emitter Voltage -20 to 20 V, Saturated Collector Emitter Voltage 2.9 to 3.6 V, DC Collector Current 77 A, Junction Temperature 150 Degree C, Gate Emitter Leakage Current 0.4 uA. More details for GD50HHU120C5S can be seen below.