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OA90

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ID = 33907
       
Country:
Germany
Brand: Valvo GmbH, Radioröhrenfabrik; 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
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
oa90.gif
OA90: Funktechnik 9/66
Egon Strampe
do29_8.gif OA90: TVT 1969 Verlag Nolde Dachau
Günther Stabe † 19.8.20
d_valvo_oa90.png
OA90: Valvo_Dioden_Transistoren_1959
Thomas Günzel † 1.8.22
Usage in Models 1= 1957 ; 1= 1958?? ; 1= 1958? ; 29= 1958 ; 1= 1959? ; 19= 1959 ; 10= 1960?? ; 9= 1960? ; 30= 1960 ; 3= 1961?? ; 11= 1961? ; 41= 1961 ; 13= 1962?? ; 5= 1962? ; 44= 1962 ; 14= 1963?? ; 4= 1963? ; 95= 1963 ; 24= 1964?? ; 14= 1964? ; 108= 1964 ; 27= 1965?? ; 6= 1965? ; 108= 1965 ; 23= 1966?? ; 14= 1966? ; 81= 1966 ; 5= 1967?? ; 19= 1967? ; 98= 1967 ; 35= 1968?? ; 22= 1968? ; 102= 1968 ; 34= 1969?? ; 34= 1969? ; 94= 1969 ; 64= 1970?? ; 11= 1970? ; 76= 1970 ; 26= 1971?? ; 11= 1971? ; 82= 1971 ; 9= 1972?? ; 48= 1972? ; 43= 1972 ; 7= 1973?? ; 20= 1973? ; 33= 1973 ; 2= 1974?? ; 3= 1974? ; 7= 1974 ; 8= 1975?? ; 11= 1975? ; 7= 1975 ; 1= 1976? ; 3= 1976 ; 2= 1977?? ; 5= 1977? ; 2= 1977 ; 2= 1978? ; 2= 1978 ; 1= 1980?? ; 1= 1980? ; 2= 1980 ; 1= 1982 ; 1= 1983?? ; 3= 1985?? ; 1= 1986?? ; 8= 9999
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1682

Collection of

Marcello Astolfi (I)
Wilfried Hofmüller (A)
Jacky Parmentier (F)
Oskar Elm (D)
Michael Mischke (D)
Collection of a member from D
 
oa90_pic.jpg

OA90
 
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