The GD300HFX65C8SN from StarPower is a IGBT with Gate Emitter Voltage -20 to 20 V, Saturated Collector Emitter Voltage 1.45 to 1.9 V, DC Collector Current 343 A, Junction Temperature 175 Degree C, Gate Emitter Leakage Current 0.4 uA. More details for GD300HFX65C8SN can be seen below.