This part is a kind of semiconductor called BD538.

Function of this product has (BD534 - BD538) SILICON POWER TRANSISTOR.

Manufacturers : SavantIC

Image and pinout :

Some of the text within the PDF file :

SavantIC Semiconductor Product Specification Silicon PNP Power Transistors BD534/536/538 DESCRIPTION ·With TO-220C package ·Complement to type BD533/535/537 ·Low saturation voltage APPLICATIONS ·For medium power linear and switching applications PINNING PIN 1 2 3 DESCRIPTION Emitter Collector;connected to mounting base Base Absolute maximum ratings (Ta=25 ) SYMBOL PARAMETER BD534 VCBO Collector-base voltage BD536 BD538 BD534 VCEO Collector-emitter voltage BD536 BD538 VEBO IC IE IB PC Tj Tstg Emitter-base voltage Collector current Emitter current Base current Collector power dissipation Junction temperature Storage temperature TC=25 Open collector Open base Open emitterCONDITIONS VALUE -45 -60 -80 -45 -60 -80 -5 -8 -8 -1 50 150 -65~150 V A A A W V V UNIT Savan [ ... ]

BD538 PDF Datasheet Download