This part is a kind of semiconductor called 20N50.

Function of this product has N-CHANNEL POWER MOSFET.

Manufacturers : UTC

Image and pinout :

Some of the text within the PDF file :

UNISONIC TECHNOLOGIES CO., LTD 20N50 20A, 500V N-CHANNEL POWER MOSFET  DESCRIPTION The UTC 20N50 is an N-channel MOSFET, it uses UTC’s advanced technology to provide the customers with a minimum on-state resistance, high switching speed and low leakage current, etc. The UTC 20N50 is suitable for switching regulator application, etc.  FEATURES * RDS(on) < 0.27Ω @ VGS=10V, ID=10A * High switching speed * Low leakage current  SYMBOL 2.Drain Power MOSFET 1.Gate 3.Source  ORDERING INFORMATION Ordering Number Lead Free Halogen Free 20N50L-T3P-T 20N50G-T3P-T 20N50L-T47-T 20N50G-T47-T Note: Pin Assignment: G: Gate D: Drain S: Source Package TO-3P TO-247 Pin Assignment 123 GD S GD S Packing Tube Tube  MARKING www.unisonic.com.tw Copyright © 2016 Unisonic Tech [ ... ]

20N50 PDF Datasheet Download