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2A257

Information - Help 
ID = 64692
       
Country:
Argentina
Brand: Texas Instruments Argentina; Don Torcuato
Tube type:  Transistor   Audio Frequency 
Identical to 2A257
Similar Tubes
Normally replaceable-slightly different:
  BC257

Base Wires
Filament Solid State
Description

PNP silicon planar transistor intended as AF pre-amplifier

 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
5 x 5 x 4 mm / 0.20 x 0.20 x 0.16 inch
Weight 1 g / 0.04 oz
Information source - - Manufacturers Literature   
 
2a257_texas_instruments_ra.jpg
2A257: Jorge Juan Stark
Jorge Juan Stark

 
to_92_ebc~~21.png
2A257: TVT 1969 Verlag Nolde Dachau
Günther Stabe

 
2a257_data1.png
2A257: Texas Instruments RA
Jorge Juan Stark


Usage in Models 1= 1976?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1


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