This part is a kind of semiconductor called AUIRG4PC40S-E.

Function of this product has Insulated Gate Bipolar Transistor.

Manufacturers : International Rectifier

Image and pinout :

Some of the text within the PDF file :

AUTOMOTIVE GRADE Insulated Gate Bipolar Transistor Features  Standard: Optimized for minimum saturation voltage and low operating frequencies ( < 1kHz)  Generation 4 IGBT design provides tighter parameter distribution and higher efficiency than Generation 3  Industry standard TO-247AD package  Lead-Free  Automotive Qualified* C G E n-channel C AUIRG4PC40S-E VCES = 600V VCE(ON) typ. = 1.32V @ VGE = 15V, IC = 31A Benefits  Generation 4 IGBT's offer highest efficiency available  IGBT's optimized for specified application conditions  Designed to be a "drop-in" replacement for equivalent industry-standard Generation 3 IR IGBT's G Gate GCE AUIRG4PC40S‐E TO‐247AD C Collector E Emitter Base part number AUIRG4PC40S-E [ ... ]

AUIRG4PC40S-E PDF Datasheet Download