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4247

Information - Help 
ID = 39319
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Transistor   Power/Output 
Identical to 4247
Similar Tubes
Normally replaceable-slightly different:
  2N257

Base SPECIAL TUBEBASE in general
Filament Solid State
Description PNP germanium alloy transistor intended as AF power amplifier; similar to => 2N257.

Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
38 x 10 x 27 mm / 1.50 x 0.39 x 1.06 inch
Weight 14 g / 0.49 oz
Information source -- Schematic   
 
to3_153.gif
4247: TVT 1969 Verlag Nolde Dachau
Günther Stabe † 19.8.20

 

Usage in Models 1= 1959?

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

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