This part is a kind of semiconductor called BFG197.

Function of this product has NPN 7 GHz wideband transistor.

Manufacturers : NXP

Image and pinout :

Some of the text within the PDF file :

DISCRETE SEMICONDUCTORS DATA SHEET BFG197; BFG197/X; BFG197/XR NPN 7 GHz wideband transistor Product specification Supersedes data of November 1992 File under discrete semiconductors, SC14 1995 Sep 13 Philips Semiconductors Product specification NPN 7 GHz wideband transistor FEATURES • High power gain • Low noise figure • Gold metallization ensures excellent reliability. DESCRIPTION The BFG197 is a silicon NPN transistor in a 4-pin, dual-emitter plastic SOT143 envelope. It is primarily intended for wideband applications in the GHz range, such as satellite TV systems and repeater amplifiers in fibre-optic systems. PINNING PIN 1 2 3 4 1 2 3 4 1 2 3 4 DESCRIPTION collector base emitter emitter collector emitter base emitter collector emitter base emitter BFG197; BFG197/X; BFG197 [ ... ]

BFG197 PDF Datasheet Download