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2N990

Information - Help 
ID = 55477
       
Country:
United States of America (USA)
Brand: Amperex; New York
Tube type:  Transistor   RF/IF-Stage 
Identical to 2N990
Similar Tubes
Normally replaceable-slightly different:
  2N1525 ; 2SA134 ; 2SA135 ; AF125
Other base and data slightly different:
  2N2089 ; 2SA470

Base Wires
Filament Solid State
Description PNP germanium mesa high-frequency transistor.>br /> - 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
6 x 6 x 6 mm / 0.24 x 0.24 x 0.24 inch
Weight 1 g / 0.04 oz
Information source - - -   
- - -   TTT Steidle 1981, KTT 1969/70
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to-72_ebcs.gif
2N990
Günther Stabe † 19.8.20

 

Usage in Models 1= 1965? ; 1= 1966?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2

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