The GD1200SGL170C3S from StarPower is a IGBT with Gate Emitter Voltage -20 to 20 V, Saturated Collector Emitter Voltage 2.5 to 3 V, DC Collector Current 1800 A, Junction Temperature 175 Degree C, Gate Emitter Leakage Current 0.4 uA. More details for GD1200SGL170C3S can be seen below.