This part is a kind of semiconductor called BD941F.

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 BD941F DESCRIPTION ·With TO-220F package ·Low collector saturation voltage APPLICATIONS ·For power switching applications PINNING PIN 1 2 3 Base Collector;connected to mounting base Emitter Fig.1 simplified outline (TO-220F) and symbol DESCRIPTION Absolute maximum ratings(Ta=25 ) SYMBOL VCBO VCEO VEBO IC ICM PC Tj Tstg PARAMETER Collector-base voltage Collector-emitter voltage Emitter-base voltage Collector current Collector current-Peak Collector dissipation Junction temperature Storage temperature TC=25 Open emitter Open base Open collector CONDITIONS VALUE 140 140 7 3 6 14 150 -50~150 UNIT V V V A A W SavantIC Semiconductor Product Specification Silicon NPN Power Transistors CHARAC [ ... ]

BD941F PDF Datasheet Download