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25A6

Information - Help 
ID = 3691
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Vacuum Pentode   Power/Output 
Identical to 25A6
Similar Tubes
Other shape (e.g. bulb type):
  25A6G ; 25A6GT
Other class quality (otherwise equal):
  CV549
Other base:
  43
First year 09.Dec.1935 Electron Tube Registration List
Predecessor Tubes 43  
Successor Tubes 25L6   25L6GT   25L6G  

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Udo)
Was used by Radio/TV-reception etc.
Filament Vf 25 Volts / If 0.3 Ampere / Indirect / Series, AC/DC
Tube prices 1 Tube prices (visible for members only)
Literature Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   
  25a6.png
  25A6: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
 
25a6_898_1k5.jpg
25A6: Collection JR
Jacob Roschy

 
365_3.png
25A6: Telefunken Werkstattbuch
Wolfgang Bauer

 
25a6_rca_data_01.png
25A6: Original data sheet
Michael Poll


Usage in Models 3= 1935?? ; 2= 1935? ; 2= 1936?? ; 1= 1936? ; 75= 1936 ; 6= 1937?? ; 4= 1937? ; 28= 1937 ; 2= 1938? ; 6= 1938 ; 2= 1939?? ; 1= 1939? ; 2= 1939 ; 10= 1940?? ; 1= 1940? ; 2= 1940 ; 3= 1941?? ; 1= 1942? ; 1= 1945?? ; 1= 1945 ; 2= 1946?? ; 1= 1947?? ; 2= 1948?? ; 1= 1948 ; 1= 1949 ; 12= 1950??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):172


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