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OA72 Info
Country:  Germany      Brand:  Valvo Radioröhrenfabrik GmbH; Hamburg 
  Tube type:  Solid-State-Diode   Detector 
Tube ID = 34734
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Identical to OA72 = OA79
Similar Tubes AA113 (different maximum ratings)   AA119 (can normally be replaced - small diff'ce)   OA172 (can normally be replaced - small diff'ce)   SFD107 (can normally be replaced - small diff'ce)  
First Source (s) Mar.1957 : Valvo-Berichte

Base Wires
Was used by Radio/TV-reception etc.
Filament
Description Germanium contact point high-frequency diode, 60 degrees C max operating temperature.
Also made by the other Philips related manufacturers. 
Text in other languages (may differ)
Dimensions (WHD) 5 x 12 x mm / 0.20 x 0.47 x inch
Weight 1 g / 0.04 oz
Literature - - Manufacturers Literature   Valvo-Handbuch 1968, KTT 1969/70

  diode_oa72_schaltbild_1960.png
  Taschen-Lehrbuch "Bastelpraxis" von W. Diefenbach, Franzis Verlag, 1960
Jürgen Küting
diode_oa72.jpg
J.K.
Jürgen Küting

 
do29_27.gif
DVT 1971 ECA
Günther Stabe

 
d_valvo_oa72_1.png
Valvo_Dioden_Transistoren_1959
Thomas Günzel

Usage in Models   1= 1955 ;
Number of Models with this tube   1
No further Information for

OA72    

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