This part is a kind of semiconductor called A1941.

Function of this product has 2SA1941.

Manufacturers : SavantIC

Image and pinout :

Some of the text within the PDF file :

SavantIC Semiconductor Silicon PNP Power Transistors Product Specification 2SA1941 DESCRIPTION ·With TO-3P(I) package ·Complement to type 2SC5198 APPLICATIONS ·Power amplifier applications ·Recommend for 70W high fidelity audio frequency amplifier output stage PINNING PIN 1 2 3 DESCRIPTION Base Collector;connected to mounting base Emitter Fig.1 simplified outline (TO-3P(I)) and symbol Absolute maximum ratings(Tc=25 ) SYMBOL PARAMETER VCBO VCEO VEBO IC Collector-base voltage Collector-emitter voltage Emitter-base voltage Collector current IB Base current PC Collector power dissipation Tj Junction temperature Tstg Storage temperature CONDITIONS Open emitter Open base Open collector TC=25 VALUE -140 -140 -5 -10 -1 100 150 -55~150 UNIT V V V A A W SavantIC Semiconductor Sil [ ... ]

A1941 PDF Datasheet Download