This part is a kind of semiconductor called K40T120.
Function of this product has IGBT.
Manufacturers : Infineon
Image and pinout :
Some of the text within the PDF file :
FDP52N20 / FDPF52N20T N-Channel MOSFET October 2007 UniFETTM FDP52N20 / FDPF52N20T N-Channel MOSFET 200V, 52A, 0.049Ω Features • RDS(on) = 0.041Ω ( Typ.)@ VGS = 10V, ID = 26A • Low gate charge ( Typ. 49nC) • Low Crss ( Typ. 66pF) • Fast switching • 100% avalanche tested • Improve dv/dt capability • RoHS compliant tm Description These N-Channel enhancement mode power field effect transistors are produced using Fairchild’s proprietary, planar stripe, DMOS technology. This advance technology has been especially tailored to minimize on-state resistance, provide superior switching performance, and withstand high energy pulse in the avalanche and commutation mode. These devices are well suited for high efficient switching mode power supplies and active power factor correct [ ... ]