This part is a kind of semiconductor called 6N90.

Function of this product has 900 Volts N-CHANNEL POWER MOSFET.

Manufacturers : Unisonic Technologies

Image and pinout :

Some of the text within the PDF file :

www.DataSheet.co.kr UNISONIC TECHNOLOGIES CO., LTD 6N90 Preliminary Power MOSFET 6.2 Amps, 900 Volts N-CHANNEL POWER MOSFET „ DESCRIPTION 1 TO-220 The UTC 6N90 is an N-channel enhancement mode Power FET using UTC’s advanced technology to provide costumers with planar stripe and DMOS technology. This technology allows a minimum on-state resistance and superior switching performance. It also can withstand high energy pulse in the avalanche and commutation mode. The UTC 6N90 is generally applied in high efficiency switch mode power supplies. 1 TO-220F 1 TO-220F1 „ FEATURES * 6.2A, 900V, RDS(on) = 2.3Ω @VGS = 10 V * Fast switching * 100% avalanche tested * Improved dv/dt capability * Halogen Free „ SYMBOL 2.Drain 1.Gate 3.Source „ ORDERING INFORMATION Package TO-220 TO [ ... ]

6N90 PDF Datasheet Download