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D3a

Information - Help 
ID = 19218
       
Country:
Europe
Brand: Common type Europe tube/semicond.
Developer: Siemens; D (S.& Halske / S. Electrogeräte) 
Tube type:  Vacuum Pentode   RF/IF-Stage 
Identical to D3a

Base Noval, B9A
Was used by Telephony
Filament Vf 6.3 Volts / If 0.315 Ampere / Indirect / Parallel, (AC/DC)
Description

Designed for a life of >10,000 hours in rf broadband telecommunications equipment.
Capable of maintaining characteristics even under cut-off conditions. (GEC/MOV data 1964)

 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
22 x 62 x mm / 0.87 x 2.44 x inch
Weight 16 g / 0.56 oz
Tube prices 7 Tube prices (visible for members only)
Information source - - Manufacturers Literature   
  d3a.png
  D3a: P.ST
Peter Steffen
 
d3a~~1.jpg
D3a: scc
Christian Schaufelberger

 
d3a_so.png
D3a: Telefunken, Spezialröhren 1962/63
Michael Schlör

 
d3a_02.png
D3a: Manufacturer's Literature
Emilio Ciardiello


from Just Qvigstad

Usage in Models 1= 1958 ; 1= 1961 ; 1= 1962?? ; 1= 1964 ; 1= 1965?? ; 1= 1966

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):6


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