This part is a kind of semiconductor called D325.

Function of this product has 2SD325.

Manufacturers : SavantIC

Image and pinout :

Some of the text within the PDF file :

SavantIC Semiconductor Product Specification Silicon NPN Power Transistors 2SD325 DESCRIPTION ·With TO-220C package ·Complement to type 2SB511 ·Low collector saturation voltage APPLICATIONS ·Designed for use in low frequency power amplifier applications PINNING PIN 1 2 3 Base Collector;connected to mounting base Emitter DESCRIPTION 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 dissipation TC=25 Tj Tstg Junction temperature Storage temperature 10 150 -50~150 Open emitter Open base Open collector CONDITIONS VALUE 35 35 5 1.5 3.0 1.75 W UNIT V V V A A SavantIC Semiconductor Product Specification Silicon NPN [ ... ]

D325 PDF Datasheet Download