This part is a kind of semiconductor called 2SC1398.

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 2SC1398 2SC1398A DESCRIPTION ·With TO-220 package ·2SC1398 is complement to type 2SA748 ·Large collector power dissipation APPLICATIONS ·For medium power amplifier applicattions PINNING PIN 1 2 3 Base Collector;connected to mounting base Emitter Fig.1 simplified outline (TO-220) and symbol DESCRIPTION Absolute maximum ratings(Ta=25 ) SYMBOL VCBO PARAMETER Collector-base voltage 2SC1398 VCEO Collector-emitter voltage 2SC1398A VEBO IC ICM PC Tj Tstg Emitter-base voltage Collector current Collector current-peak Collector power dissipation Junction temperature Storage temperature TC=25 Open collector Open base 70 5 2 3 15 150 -55~150 V A A W CONDITIONS Open emitter VALUE 70 50 V UNIT V Sava [ ... ]

2SC1398 PDF Datasheet Download