This part is a kind of semiconductor called G4PC40W.

Function of this product has IRG4PC40W.

Manufacturers : IRF

Image and pinout :

Some of the text within the PDF file :

PD -91656C IRG4PC40W INSULATED GATE BIPOLAR TRANSISTOR Features C • Designed expressly for Switch-Mode Power Supply and PFC (power factor correction) applications • Industry-benchmark switching losses improve efficiency of all power supply topologies • 50% reduction of Eoff parameter • Low IGBT conduction losses • Latest-generation IGBT design and construction offers tighter parameters distribution, exceptional reliability VCES = 600V G E VCE(on) typ. = 2.05V @VGE = 15V, IC = 20A n-channel Benefits • Lower switching losses allow more cost-effective operation than power MOSFETs up to 150 kHz ("hard switched" mode) • Of particular benefit to single-ended converters and boost PFC topologies 150W and higher • Low conduction losses and minimal minority- [ ... ]

G4PC40W PDF Datasheet Download