This part is a kind of semiconductor called 2SC1027.

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 2SC1027 DESCRIPTION ·With TO-3 package ·High power dissipation ·Low collector saturation voltage APPLICATIONS ·Switching regulators ·DC-DC convertor ·General purpose power amplifiers PINNING(see Fig.2) PIN 1 2 3 Base Emitter Collector Fig.1 simplified outline (TO-3) and symbol DESCRIPTION Absolute maximum ratings(Ta=? ) SYMBOL VCBO VCEO VEBO IC PC Tj Tstg PARAMETER Collector-base voltage Collector-emitter voltage Emitter-base voltage Collector current Collector power dissipation Junction temperature Storage temperature TC=25? CONDITIONS Open emitter Open base Open collector VALUE 250 80 5 6 50 150 -55~150 UNIT V V V A W ? ? SavantIC Semiconductor Product Specification Silicon NPN Po [ ... ]

2SC1027 PDF Datasheet Download