This part is a kind of semiconductor called PBSS4240T.

Function of this product has transistor.

Manufacturers : NXP

Image and pinout :

Some of the text within the PDF file :

DISCRETE SEMICONDUCTORS DATA SHEET PBSS4240T 40 V; 2 A NPN low VCEsat (BISS) transistor Product data sheet Supersedes data of 2001 Jul 13 2004 Jan 09 NXP Semiconductors 40 V; 2 A NPN low VCEsat (BISS) transistor Product data sheet PBSS4240T FEATURES • Low collector-emitter saturation voltage • High current capability • Improved device reliability due to reduced heat generation • Replacement for SOT89/SOT223 standard packaged transistors. APPLICATIONS • Supply line switching circuits • Battery management applications • DC/DC converter applications • Strobe flash units • Heavy duty battery powered equipment (motor and lamp drivers). DESCRIPTION NPN low VCEsat transistor in a SOT23 plastic package. PNP complement: PBSS5240T. MARKING TYPE NUMBER PBSS4240T MARKING CO [ ... ]

PBSS4240T PDF Datasheet Download