This part is a kind of semiconductor called NCE85H21T.

Function of this product has NCE N-Channel Enhancement Mode Power MOSFET.

Manufacturers : NCE Power

Image and pinout :

Some of the text within the PDF file :

http://www.ncepower.com Pb Free Product NCE85H21T NCE N-Channel Enhancement Mode Power MOSFET Description The NCE85H21T uses advanced trench technology and design to provide excellent RDS(ON) with low gate charge. It can be used in automotive applications and a wide variety of other applications. General Features ● VDSS =85V,ID =210A RDS(ON) < 4.5mΩ @ VGS=10V Schematic diagram ● Good stability and uniformity with high EAS ● Special process technology for high ESD capability ● High density cell design for ultra low Rdson ● Fully characterized avalanche voltage and current ● Excellent package for good heat dissipation Application ● Automotive applications ● Hard switched and high frequency circuits ● Uninterruptible power supply Marking and pin assignment 100% UIS [ ... ]

NCE85H21T PDF Datasheet Download