This part is a kind of semiconductor called C3170.
Function of this product has 2SC3170.
Manufacturers : Savantic
Image and pinout :
Some of the text within the PDF file :
SavantIC Semiconductor Product Specification Silicon NPN Power Transistors 2SC3170 www.datasheet4u.com DESCRIPTION ·With TO-220Fa package ·Low collector saturation voltage ·High breakdown voltge APPLICATIONS ·For high speed switching applications PINNING PIN 1 2 3 DESCRIPTION Base Collector Emitter Absolute maximum ratings (Ta=25 ) SYMBOL VCBO VCEO VEBO IC ICM PARAMETER Collector-base voltage Collector-emitter voltage Emitter-base voltage Collector current Collector current-peak Ta=25 PC Collector power dissipation TC=25 Tj Tstg Junction temperature Storage temperature 40 150 -55~150 CONDITIONS Open emitter Open base Open collector VALUE 500 400 7 7 15 2 W UNIT V V V A A SavantIC Semiconductor Product Specification Silicon NPN Power Transistors CHARACTERISTICS Tj=25 unless oth [ ... ]