This part is a kind of semiconductor called 2SC3157.
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 2SC3157 DESCRIPTION ·With TO-220 package ·High switching speed ·Low collector saturation voltage ·Complement to type 2SA1261 APPLICATIONS ·For high voltage ,high speed and power switching applications PINNING PIN 1 2 3 Base Collector Emitter DESCRIPTION Absolute maximum ratings(Ta=25 ) SYMBOL VCBO VCEO VEBO IC ICM IB PARAMETER Collector-base voltage Collector-emitter voltage Emitter-base voltage Collector current Collector current-Peak Base current Ta=25 PT Total power dissipation TC=25 Tj Tstg Junction temperature Storage temperature 60 150 -55~150 CONDITIONS Open emitter Open base Open collector VALUE 150 100 7 10 20 3.5 1.5 W UNIT V V V A A A SavantIC Semiconductor www.c [ ... ]