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ID = 13684
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Triode, vacuum   Detector 
  Ca. 1925 up to 1945 rare.
Identical to A109
Similar Tubes
Normally replaceable-slightly different:
  A106 ; A110
Other base:
First year 1925 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
1924 : Saga of the Vacuum Tube, Tyne p.421
Feb.1926 : Radio Luistergids, The Netherlands still advertised

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 1 Volts / If 0.06 Ampere / Direct / Battery =

Detector and first LF. Also with UX4 base. Also listed in L'ABCDes Lampes de TSF

Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
41 x 98 x 31 mm / 1.61 x 3.86 x 1.22 inch
Weight 39 g / 1.38 oz
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   R38H 1-12-1925
Babani, International Radio Tube Encyclopaedia
Taschenbuch zum Röhren-Codex 1948/49

s_0_g_5.gif A109: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20

More ...

Just Qvigstad
A109: own collection
Peter den Boer

More ...

Collection of

Collection of a member from FIN
Collection of a member from D


Forum contributions about this tube
Threads: 1 | Posts: 2
Hits: 3375     Replies: 1
A109 (A109) Röhre und IC
Egon Strampe

Gleiche Bezeichnung haben Röhre und IC. IC - A109 in Halbleiter-Bauelemente 1978.


Günther Stabe † 19.8.20

 Der "Fall" wird per E-Mail geklärt...


End of forum contributions about this tube

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