radiomuseum.org
Please click your language flag. Bitte Sprachflagge klicken.

OA70

Information - Help 
ID = 33694
       
Country:
Europe
Brand: Common type Europe tube/semicond.
Tube type:  Solid-State-Diode   Detector 
Identical to OA70 = AA138
Similar Tubes
Normally replaceable-slightly different:
  17P1 ; 1K34A ; 1N60 ; 1N87G ; 1NN41 ; 1S188 ; 1T23 ; 2AK1 ; 2AP ; 2AP9 ; 36D22 ; 40P1 ; 41P1 ; AA116 ; AAY27 ; DOG52 ; GEX34 ; MA51 ; MA51A ; MA80 ; OA160 ; OA73 ; OA90 ; RL31 ; RL41 ; SFD104 ; SFD110 ; WN5457
First year 11.Jan.1955 Valvo-Berichte Germanium-Dioden in Allglas-Technik OA70 - OA74
First Source (s)
Jan.1955 : Radio-Magazin (Das) mit Fernseh-Magazin Rückwärtiges Deckblatt im Att.
Successor Tubes OA90  
Base Wires
Was used by Radio/TV-reception etc.
Description

Germanium contact point high-frequency diode, intended for use as detector in AM receivers. 75 degrees C max operating temperature.
Also made by the other Philips related manufacturers.

 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip		 5 x 12 x mm / 0.20 x 0.47 x inch
Weight 1 g / 0.04 oz
Information source - - Manufacturers Literature   Valvo-Handbuch 1968, KTT 1969/70
oa70_umg.gif
OA70: Grundig Micro Transistor Boy 59
Günther Stabe † 19.8.20
do29_1.gif OA70: DVT 1971 - Dioden-Vergleichs-Tabelle
Günther Stabe † 19.8.20
oa70_kennl1.png
OA70: Valvo Handbuch 1968
Günther Stabe † 19.8.20
More ...
Usage in Models 1= 1955?? ; 4= 1955? ; 5= 1955 ; 4= 1956?? ; 5= 1956? ; 18= 1956 ; 4= 1957?? ; 2= 1957? ; 63= 1957 ; 13= 1958?? ; 39= 1958? ; 130= 1958 ; 10= 1959?? ; 17= 1959? ; 98= 1959 ; 55= 1960?? ; 38= 1960? ; 104= 1960 ; 13= 1961?? ; 34= 1961? ; 71= 1961 ; 22= 1962?? ; 41= 1962? ; 61= 1962 ; 20= 1963?? ; 23= 1963? ; 52= 1963 ; 20= 1964?? ; 12= 1964? ; 49= 1964 ; 37= 1965?? ; 15= 1965? ; 60= 1965 ; 31= 1966?? ; 12= 1966? ; 31= 1966 ; 6= 1967?? ; 20= 1967? ; 35= 1967 ; 17= 1968?? ; 12= 1968? ; 11= 1968 ; 16= 1969?? ; 2= 1969? ; 12= 1969 ; 21= 1970?? ; 2= 1970? ; 4= 1970 ; 4= 1971?? ; 2= 1971? ; 2= 1971 ; 2= 1972?? ; 1= 1972 ; 1= 1973?? ; 1= 9999
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1385

Collection of

Günter Kudicke (D)
Collection of a member from D
Collection of a member from FIN
Museum Roggenhofer (A)
Michael Gnaedig-Fischer (MEX)
Christian Weber (D)
Peter Steffen (CH)
Marcello Astolfi (I)
Peter Pfeiffer (D)
Jürgen Küting (D)
Wolfgang Bauer (A)
Karlheinz Fischer (D)
Wilfried Hofmüller (A)
Reinhard Zwirner (D)
 
oa70_3.jpg

OA70
 
You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]
  
Data Compliance More Information