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ID = 15065
United States of America (USA)
Developer: Westinghouse El. & Mfg. Co. - see also Canadian W. 
Tube type:  Triode, vacuum   Universal 
Identical to WD12 = C12_Triode = Junior_Concertmaster = 112_WD12 = U12_Ureco = D_Amplion = 2959 = 012 = MD12 = V.T.12 = 412_Royaltron = D12
Similar Tubes
Normally replaceable-slightly different:
  CT12 ; Dry-Battery ; M12 ; OH12 ; dry_cell-Murdon
Other base:
  11 ; 12_UX ; CX12 ; SLD12 ; WD11 ; WX12
First year 1923 Saga of the Vacuum Tube, Tyne page 313
Production stop 1926
Predecessor Tubes WD11  
Successor Tubes 1925   WX12   CX12  

Base UV-Base (4 Pins+Bayonet, USA 1914 WE) (Codex=Bo)
Was used by Radio/TV-reception etc.
Filament Vf 1.1 Volts / If 0.25 Ampere / Direct / Battery =

The WD12 was introduced in 1923 but discontinued in 1926. It was made by several US manufacturers. It is a WD11 with UV base. The original WD12 was ungettered. Next in line of production was a bakelite based tube, also ungettered. Gettering was introduced in the next tube. The tip was discontinued in the ast WD12. It as re3placed by the WX12

Text in other languages (may differ)
Tube prices 14 Tube prices (visible for members only)
Information source Saga of the Vacuum Tube, Tyne   p. 313
- - Manufacturers Literature   
Taschenbuch zum Röhren-Codex 1948/49
Tube Lore (II)

uvsockel_1.png WD12: KoBi
Konrad Birkner † 12.08.2014

Just Qvigstad
WD12: KoBi
Konrad Birkner † 12.08.2014

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Usage in Models 2= 1923? ; 23= 1923 ; 3= 1924? ; 21= 1924 ; 3= 1925? ; 4= 1925

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):56

Collection of




Bakelit base. Two lime getter. Glass has 26 mm diameter.

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