Antique radios, Old Time Radios

AA138

ID = 34223

Country:

Germany

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:

OA160

First Source (s)

Mar.1962 : -- Collector info (Sammler)

Base

Wires

Description

Material/Aufbau: Germanium Punktkontakt;
Form/Case: Allglas, ähnlich DO-29;
Daten/electr.data: 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: DVT 1971 ECA Günther Stabe † 19.8.20		AA138: Telefunken Handbuch Halbleiter 66/67 Anonymous 10 Collector More ...

Usage in Models

4= 1965? ; 2= 1967?? ; 1= 1967? ; 4= 1967 ; 1= 1968 ; 3= 1969?? ; 5= 1969? ; 5= 1969 ; 1= 1970?? ; 1= 1970? ; 1= 1970 ; 1= 1971?? ; 7= 1971? ; 3= 1971 ; 2= 1972?? ; 3= 1972

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):44

Collection of

Jürgen Küting (D)

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