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7Y4

Information - Help 
ID = 3263
       
Country:
United States of America (USA)
Brand:
Tube type:  Full-Wave Vacuum Rectifier 
Identical to 7Y4 = CV901 = U149
Similar Tubes
Other base:
  6Z4 ; 6Z4/84 ; 84 ; 84/6Z4
Other base and data slightly different:
  1274
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)
Filament Vf 6.3 Volts / If 0.5 Ampere / Indirect / Parallel, (AC/DC) /
Tube prices 3 Tube prices (visible for members only)
Literature Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   
  7y4.png
  7Y4: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Michael Schlör
 
7y4brimarillumineeph1s.jpg
7Y4: Patrice ZEISSLOFF
Patrice Zeissloff

 
310.png
7Y4: Telefunken Werkstattbuch
Wolfgang Bauer

 
7y4_techdat01.png
7Y4: Sylvania Technical Manual
Peter Hoddow


Usage in Models 1= 1938 ; 2= 1939? ; 21= 1939 ; 5= 1940?? ; 26= 1940 ; 2= 1941? ; 31= 1941 ; 6= 1942 ; 1= 1943 ; 1= 1944? ; 2= 1945? ; 3= 1946?? ; 5= 1946? ; 11= 1946 ; 1= 1947?? ; 5= 1947? ; 7= 1947 ; 12= 1948?? ; 11= 1948? ; 23= 1948 ; 1= 1949?? ; 10= 1949? ; 10= 1949 ; 3= 1950?? ; 9= 1950? ; 15= 1950 ; 4= 1951?? ; 4= 1951? ; 4= 1951 ; 3= 1952? ; 7= 1952 ; 2= 1953?? ; 3= 1953? ; 4= 1953 ; 1= 1954?? ; 4= 1955?? ; 1= 1955? ; 1= 1955 ; 2= 1959? ; 1= 9999

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):265


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