This part is a kind of semiconductor called G50H603.

Function of this product has IGW50N60H3.

Manufacturers : Infineon Technologies

Image and pinout :

Some of the text within the PDF file :

IGBT HighspeedIGBTinTrenchandFieldstoptechnology IGW50N60H3 600Vhighspeedswitchingseriesthirdgeneration Datasheet IndustrialPowerControl IGW50N60H3 Highspeedswitchingseriesthirdgeneration HighspeedIGBTinTrenchandFieldstoptechnology  Features: TRENCHSTOPTMtechnologyoffering •verylowVCEsat •lowEMI •Verysoft,fastrecoveryanti-paralleldiode •maximumjunctiontemperature175°C •qualifiedaccordingtoJEDECfortargetapplications •Pb-freeleadplating;RoHScompliant •completeproductspectrumandPSpiceModels: http://www.infineon.com/igbt/ Applications: •uninterruptiblepowersupplies •weldingconverters •converterswithhighswitchingfrequency G G C E C E KeyPerformanceandPackageParameters Type VCE IC VCEsat,T [ ... ]

G50H603 PDF Datasheet Download