This part is a kind of semiconductor called BF422.

Function of this product has NPN high-voltage transistors.

Manufacturers : NXP

Image and pinout :

Some of the text within the PDF file :

DISCRETE SEMICONDUCTORS DATA SHEET book, halfpage M3D186 BF420; BF422 NPN high-voltage transistors Product specification Supersedes data of September 1994 File under Discrete Semiconductors, SC04 1996 Dec 09 Philips Semiconductors Product specification NPN high-voltage transistors FEATURES • Low feedback capacitance. APPLICATIONS • Class-B video output stages in colour television and professional monitor equipment. DESCRIPTION NPN transistors in a TO-92 plastic package. PNP complements: BF421 and BF423. 1 handbook, halfpage 2 3 BF420; BF422 PINNING PIN 1 2 3 base collector emitter DESCRIPTION 2 1 3 MAM259 Fig.1 Simplified outline (TO-92) and symbol. QUICK REFERENCE DATA SYMBOL VCBO PARAMETER collector-base voltage BF420 BF422 VCEO collector-emitter voltage BF420 BF422 ICM [ ... ]

BF422 PDF Datasheet Download