This part is a kind of semiconductor called 2SC3866.

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 DESCRIPTION ·With TO-220Fa package ·High speed switching ·High voltage ·High reliability APPLICATIONS ·Switching regulators ·Ultrasonic generators ·High frequency inverters ·General purpose power amplifiers PINNING PIN 1 2 3 DESCRIPTION Base Collector Emitter 2SC3866 Fig.1 simplified outline (TO-220Fa) and symbol Absolute maximum ratings (Ta=25 ) SYMBOL VCBO VCEO VEBO IC IB PC Tj Tstg PARAMETER 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 900 800 10 3 1 40 150 -55~150 UNIT V V V A A W THERMAL CHARACT [ ... ]

2SC3866 PDF Datasheet Download