This part is a kind of semiconductor called K40H603.

Function of this product has 600V DuoPack IGBT and Diode.

Manufacturers : Infineon

Image and pinout :

Some of the text within the PDF file :

IGBT HighspeedDuoPackIGBTinTrenchandFieldstoptechnologywithsoft,fastrecovery anti-paralleldiode IKW40N60H3 600VDuoPackIGBTandDiode Highspeedswitchingseriesthirdgeneration Datasheet IndustrialPowerControl http://www.Datasheet4U.com IKW40N60H3 Highspeedswitchingseriesthirdgeneration HighspeedDuoPack:IGBTinTrenchandFieldstoptechnologywithsoft,fast recoveryanti-paralleldiode  Features: TRENCHSTOPTMtechnologyoffering •verylowVCEsat •lowEMI •Verysoft,fastrecoveryanti-paralleldiode •maximumjunctiontemperature175°C •qualifiedaccordingtoJEDECfortargetapplications •Pb-freeleadplating;RoHScompliant •completeproductspectrumandPSpiceModels: http://www.infineon.com/igbt/ Applications: •uninterruptiblep [ ... ]

K40H603 PDF Datasheet Download