This part is a kind of semiconductor called 2N4403.
Function of this product has PNP switching transistor.
Manufacturers : NXP
Image and pinout :

Some of the text within the PDF file :
DISCRETE SEMICONDUCTORS DATA SHEET book, halfpage M3D186 2N4403 PNP switching transistor Product specification Supersedes data of 1997 May 05 1999 Apr 23 Philips Semiconductors Product specification PNP switching transistor FEATURES • High current (max. 600 mA) • Low voltage (max. 40 V). APPLICATIONS • Industrial and consumer switching applications. DESCRIPTION PNP switching transistor in a TO-92; SOT54 plastic package. NPN complement: 2N4401. 1 handbook, halfpage 2N4403 PINNING PIN 1 2 3 collector base emitter DESCRIPTION 2 3 1 2 3 MAM280 Fig.1 Simplified outline (TO-92; SOT54) and symbol. LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL VCBO VCEO VEBO IC ICM IBM Ptot Tstg Tj Tamb PARAMETER collector-base voltage collector-emitte [ ... ]
2N4403 PDF Datasheet Download
