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7Y4 Info
Country:  United States of America (USA)      Brand:  Common type USA 
  Tube type:  Full-Wave Vacuum Rectifier 
Tube ID = 3263
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Identical to 7Y4 = CV901
Similar Tubes 84/6Z4 (other base)   6Z4/84 (other base)   6Z4 (other base)   84 (other base)   1274 (other base and data slightly different)  
First Source (s) 09.Dec.1938 : Electron Tube Registration List
Predecessor Tubes 84/6Z4   6ZY5G   6Z4/84   6Z4   84  
Successor Tubes 6X4  

Base Loctal-8, B8G (Sylvania, 1938) (Codex=W)
Was used by Radio/TV-reception etc.
Filament -: Indirect / -: Parallel, (AC/DC) / If: 0.5 Ampere / Vf 6.3 Volts /
Tube prices 0 Tube prices (visible for members only)
Literature Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   

  7y4.gif
  Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Michael Schlör
7y4_a.jpg
scc
Christian Schaufelberger

 
310.png
Telefunken Werkstattbuch
Wolfgang Bauer

 
7y4_techdat01.png
Sylvania Technical Manual
Peter Hoddow

Usage in Models   1= 1938 ; 1= 1939? ; 18= 1939 ; 21= 1940 ; 33= 1941 ; 4= 1942 ; 2= 1945? ; 1= 1945 ; 3= 1946? ; 4= 1946 ; 4= 1947? ; 2= 1947 ; 4= 1948?? ; 2= 1948? ; 20= 1948 ; 2= 1949?? ; 9= 1949? ; 7= 1949 ; 3= 1950?? ; 6= 1950? ; 17= 1950 ; 3= 1951?? ; 4= 1951? ; 1= 1951 ; 5= 1952? ; 3= 1952 ; 1= 1953?? ; 4= 1953 ; 1= 1954?? ; 4= 1955?? ; 1= 1959 ; 4= 9999 ;
Number of Models with this tube   195
No further Information for

7Y4    

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