This part is a kind of semiconductor called BC141.

Function of this product has NPN medium power transistors.

Manufacturers : Philipss

Image and pinout :

Some of the text within the PDF file :

DISCRETE SEMICONDUCTORS DATA SHEET M3D110 BC140; BC141 NPN medium power transistors Product specification Supersedes data of September 1994 File under Discrete Semiconductors, SC04 1997 May 12 Philips Semiconductors Product specification NPN medium power transistors FEATURES • High current (max. 1 A) • Low voltage (max. 60 V). APPLICATIONS • General purpose switching and amplification. DESCRIPTION NPN medium power transistor in a TO-39 metal package. PNP complements: BC160 and BC161. 3 BC140; BC141 PINNING PIN 1 2 3 emitter base collector, connected to case DESCRIPTION 1 handbook, halfpage 2 2 3 MAM317 1 Fig.1 Simplified outline (TO-39) and symbol. QUICK REFERENCE DATA SYMBOL VCBO PARAMETER collector-base voltage BC140 BC141 VCEO collector-emitter voltage BC140 BC141 I [ ... ]

BC141 PDF Datasheet Download