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OA90

Information - Help 
ID = 33907
       
Country:
Germany
Brand: Valvo Radioröhrenfabrik GmbH; Hamburg
Tube type:  Solid-State-Diode   Detector 
Identical to OA90 = AA138 = D1_BRC = D12_BRC
Similar Tubes
Normally replaceable-slightly different:
  AA112 ; AA114 ; AA116 ; AA121 ; AA123 ; AA143 ; AAY21 ; AAY27 ; MR1_Diode ; OA160 ; OA70
First Source (s)
Mar.1958 : Valvo-Berichte
Predecessor Tubes OA70  

Base Wires
Filament Solid State
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
Literature - - Manufacturers Literature   Valvo-Handbuch 1968, KTT 1969/70
  oa90.gif
  OA90: Funktechnik 9/66
Egon Strampe
 
oa90_pic.jpg
OA90: o
Anonymous 15 Collector

 
do29_8.gif
OA90: TVT 1969 Verlag Nolde Dachau
Günther Stabe

 
d_valvo_oa90.png
OA90: Valvo_Dioden_Transistoren_1959
Thomas Günzel


Usage in Models 1= 1957 ; 1= 1958?? ; 27= 1958 ; 13= 1959 ; 4= 1960?? ; 8= 1960? ; 23= 1960 ; 2= 1961?? ; 9= 1961? ; 34= 1961 ; 8= 1962?? ; 3= 1962? ; 31= 1962 ; 7= 1963?? ; 6= 1963? ; 81= 1963 ; 22= 1964?? ; 7= 1964? ; 89= 1964 ; 20= 1965?? ; 5= 1965? ; 86= 1965 ; 13= 1966?? ; 8= 1966? ; 63= 1966 ; 2= 1967?? ; 8= 1967? ; 69= 1967 ; 22= 1968?? ; 12= 1968? ; 91= 1968 ; 7= 1969?? ; 23= 1969? ; 69= 1969 ; 20= 1970?? ; 6= 1970? ; 63= 1970 ; 4= 1971? ; 72= 1971 ; 3= 1972?? ; 25= 1972? ; 35= 1972 ; 2= 1973?? ; 6= 1973? ; 27= 1973 ; 1= 1974? ; 4= 1974 ; 5= 1975?? ; 1= 1975? ; 6= 1975 ; 2= 1976 ; 2= 1977?? ; 2= 1977 ; 1= 1978? ; 1= 1982 ; 3= 1985?? ; 8= 9999

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1173


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