This part is a kind of semiconductor called 12N80.

Function of this product has 800V N-CHANNEL POWER MOSFET.

Manufacturers : UTC

Image and pinout :

Some of the text within the PDF file :

UNISONIC TECHNOLOGIES CO., LTD 12N80 Preliminary Power MOSFET 12A, 800V N-CHANNEL POWER MOSFET „ DESCRIPTION 1 TO-220 The UTC 12N80 is an N-channel enhancement mode power MOSFET using UTC’s advanced technology to provide customers with planar stripe and DMOS technology. This technology is specialized in allowing a minimum on-state resistance and superior switching performance. It also can withstand high energy pulse in the avalanche and commutation mode. The UTC 12N80 is universally applied in high efficiency switch mode power supply. 1 TO-220F1 „ FEATURES * RDS(on) = 0.9Ω @VGS = 10 V * High switching speed * Improved dv/dt capability * 100% avalanche tested „ SYMBOL „ ORDERING INFORMATION Package TO-220 TO-220F1 Pin Assignment 1 2 3 G D S G D S Packing Tube Tube Order [ ... ]

12N80 PDF Datasheet Download