This part is a kind of semiconductor called C3907.
Function of this product has 2SC3907.
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(I) package ·Complement to type 2SA1516 APPLICATIONS ·Audio and general purpose power amplifier applications ·Recommend for 80W high fidelity audio frequency amplifier output stage PINNING PIN DE 1 2 3 Base Collector;connected to mounting base Emitter SCRIPTION 2SC3907 Fig.1 s implified outline ( TO-3P(I)) and symbol Absolute maximum ratings (Ta=25 ) SYMBOL P VCBO VCEO VEBO IC IB PC Tj Tstg ARAMETER Collector-base voltage Collector-emitter voltage Emitter-base voltage Collector current Base current Collector power dissipation Junction temperature Storage temperature TC=25 CONDITIONS Open emitter Open base Open collector VALUE 180 180 5 12 1.2 130 150 -55~150 UNIT V [ ... ]