This part is a kind of semiconductor called A634.

Function of this product has 2SA634.

Manufacturers : Quanzhou Jinmei Electronic

Image and pinout :

Some of the text within the PDF file :

www.net Power Transistors www.jmnic.com 2SA634 Silicon PNP Transistors BCE Features ©q With TO-220 package Absolute Maximum Ratings Tc=25 SYMBOL VCBO VCEO VEBO IB IC PC Tj Tstg PARAMETER Collector to base voltage Collector to emitter voltage Emitter to base voltage Base collector current Collector current Collector power dissipation Junction temperature Storage temperature 3.0 10 150 -55~+150 RATING 40 40 5.0 UNIT V V V A A W TO-220 Electrical Characteristics Tc=25 SYMBOL ICBO IEBO ICEO VCBO VCEO(SUS) VEBO VCE(sat-1) VCE(sat-2) hFE-1 hFE-2 hFE-3 VBE(sat)1 VBE(sat)1 fT Cob PARAMETER Collector-base cut-off current Emitter-base cut-off current Collector-emitter cut-off current Collector-base breakdown voltage Collector-emitter sustaining voltage Emitter-base breakdown vol [ ... ]

A634 PDF Datasheet Download