This part is a kind of semiconductor called D1406.

Function of this product has 2SD1406.

Manufacturers : SavantIC

Image and pinout :

Some of the text within the PDF file :

SavantIC Semiconductor Product Specification Silicon NPN Power Transistors 2SD1406 · www.datasheet4u.com DESCRIPTION ·With TO-220Fa package ·Collector power dissipation :PC=25W@TC=25 ·Low collector saturation voltage ·Complement to type 2SB1015 APPLICATIONS ·For audio frequency power amplifier applications PINNING PIN 1 2 3 Base Collector DESCRIPTION Fig.1 simplified outline (TO-220Fa) and symbol Emitter Absolute maximum ratings(Ta=25 ) SYMBOL VCBO VCEO VEBO IC IB PARAMETER Collector-base voltage Collector -emitter voltage Emitter-base voltage Collector current Base current Ta=25 PC Collector power dissipation TC=25 Tj Tstg Junction temperature Storage temperature 25 150 -55~150 CONDITIONS Open emitter Open base Open collector VALUE 60 60 7 3 0.5 2.0 W UNIT V V V A A Free Dat [ ... ]

D1406 PDF Datasheet Download