This part is a kind of semiconductor called 2SD2253.

Function of this product has SILICON POWER TRANSISTOR.

Manufacturers : SavantIC

Image and pinout :

Some of the text within the PDF file :

SavantIC Semiconductor Product Specification Silicon NPN Power Transistors 2SD2253 DESCRIPTION ·With TO-3P(H)IS package ·Built-in damper diode ·High voltage ,high speed APPLICATIONS ·Color TV horizontal output applications PINNING PIN 1 2 3 DESCRIPTION Base Collector Emitter Fig.1 simplified outline (TO-3P(H)IS) and symbol Absolute maximum ratings (Ta=25 ) SYMBOL VCBO VCEO VEBO IC ICM IB PC Tj Tstg PARAMETER Collector-base voltage Collector-emitter voltage Emitter-base voltage Collector current Collector current-peak Base current Collector power dissipation Junction temperature Storage temperature TC=25 CONDITIONS Open emitter Open base Open collector VALUE 1700 600 5 6 12 3 50 150 -55~150 UNIT V V V A A A W SavantIC Semiconductor Product Specification Sili [ ... ]

2SD2253 PDF Datasheet Download