Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 34223
Brand: Telefunken Deutschland (TFK), (Gesellschaft für drahtlose Telegraphie Telefunken mbH
Tube type:  Solid-State-Diode   Detector 
Identical to AA138 = OA70 = OA90
Similar Tubes
Normally replaceable-slightly different:
  1S80 ; MA51 ; MA51A ; MA80
Different maximum ratings:
First Source (s)
Mar.1962 : -- Collector info (Sammler)

Base Wires
Filament Solid State
Description Material/Aufbau: Germanium Punktkontakt;
Form/Case: Allglas, ähnlich DO-29;
Daten/ I F: 10 mA; U F: 0.9 V; I sp: 18 µA; U sp: 10 V; Imax: 25 mA; Umax: 15 V; tmax: 100 °C.
Dimensions (WHD)
incl. pins / tip
5 x 10 x mm / 0.20 x 0.39 x inch
Weight 1 g / 0.04 oz
Information source -- Collector info (Sammler)   KTT 1969/70
  AA138: Telefunken Laborbuch Band V
Heinz Höger
AA138: J.K.
Jürgen Küting

AA138: DVT 1971 ECA
Günther Stabe † 19.8.20

AA138: Telefunken Handbuch Halbleiter 66/67
Michael Schlör

Usage in Models 3= 1967 ; 3= 1969 ; 2= 1970?? ; 1= 1971?? ; 1= 1972

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):10

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]