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4NU72

Information - Help 
ID = 47443
       
Country:
Czechoslovakia
Brand: Tesla; Praha, Bratislava etc.
Tube type:  Transistor   Power/Output 
Identical to 4NU72
Similar Tubes
Normally replaceable-slightly different:
  GD180 ; OC30

Base Wires
Filament Solid State
Description PNP germanium alloy transistor intended as AF power amplifier / switch.

Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
26 x 8 x 19 mm / 1.02 x 0.31 x 0.75 inch
Weight 6 g / 0.21 oz
Literature -- Original-techn. papers.   Tesla Katalog
 
4nu72.jpg
4NU72: Eigene Sammlung
Egon Strampe

 
sot9_m_52.gif
4NU72: KTT 1969/70
Günther Stabe

 

Usage in Models 1= 1965?? ; 1= 1967??

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


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