This part is a kind of semiconductor called 2SC5280.

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 DESCRIPTION ·With TO-3P(H)IS package ·High voltage ·Low saturation voltage ·High speed ·Bult-in damper diode APPLICATIONS ·High speed switching applications ·Horizontal deflection output for medium resolution display,color TV PINNING PIN 1 2 3 Base Collector Emitter DESCRIPTION 2SC5280 Fig.1 simplified outline (TO-3P(H)IS) and symbol Maximum absolute ratings(Tc=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 1500 600 5 8 16 4 [ ... ]

2SC5280 PDF Datasheet Download