This part is a kind of semiconductor called D1453.

Function of this product has 2SD1453.

Manufacturers : SavantIC

Image and pinout :

Some of the text within the PDF file :

SavantIC Semiconductor Product Specification Silicon NPN Power Transistors 2SD1453 www.datasheet4u.com DESCRIPTION ·With TO-3PN package ·High voltage,high speed ·Built-in damper diode APPLICATIONS ·For TV horizontal deflection output applications PINNING PIN 1 2 3 Base Collector;connected to mounting base Emitter Fig.1 simplified outline (TO-3PN) and symbol DESCRIPTION Absolute maximum ratings (Ta=25 ) SYMBOL VCBO VEBO IC ICM PC Tj Tstg PARAMETER Collector-base voltage Emitter-base voltage Collector current (DC) Collector current-Peak Collector power dissipation Junction temperature Storage temperature TC=25 CONDITIONS Open emitter Open collector VALUE 1500 6 3 3.5 50 150 -45~150 UNIT V V A A W SavantIC Semiconductor Product Specification Silicon NPN Power Transistors CHARACTE [ ... ]

D1453 PDF Datasheet Download