This part is a kind of semiconductor called 2SD2499.

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 2SD2499 DESCRIPTION ·With TO-3P(H)IS package ·High voltage;high speed ·Low saturation voltage ·Bult-in damper diode APPLICATIONS ·Horizontal deflection output for color TV PINNING PIN 1 2 3 Base Collector Emitter Fig.1 simplified outline (TO-3P(H)IS) and symbol DESCRIPTION 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 Total power dissipation Junction temperature Storage temperature TC=25 CONDITIONS Open emitter Open base Open collector VALUE 1500 600 5 6 12 3 50 150 -55~150 UNIT V V V A A A W SavantIC Semiconductor Product [ ... ]

2SD2499 PDF Datasheet Download