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12SA7

Information - Help 
ID = 2634
       
Country:
United States of America (USA)
Brand:
Developer: RCA (RCA Victor Co. Inc.); New York (NY) 
Tube type:  Pentagrid-Converter (Heptode)   Pentagrid (new)   Controlling (mu) 
Identical to 12SA7 = VT-161 = CV537
Similar Tubes
Other shape (e.g. bulb type):
  12SA7G ; 12SA7GT ; CH-1_Japan
Other class quality (otherwise equal):
  12SA7Y
Different maximum ratings:
  12SY7
Heater different:
  6SA7
Other base:
  14Q7
First year 1939 -- Collector info (Sammler)
First Source (s)
02.Feb.1939 : Electron Tube Registration List
Predecessor Tubes 12A8G  
Successor Tubes 12BE6   12BA7  

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Ud)
Was used by Radio/TV-reception etc.
Filament Vf 12.6 Volts / If 0.15 Ampere / Indirect / Specified voltage AND current AC/DC
Tube prices 4 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   

12sa7.png
12SA7: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †

12sa7basediagram.png 12SA7: 12SA7 RCA Data Sheet 1947
Vitor Oliveira

More ...

Just Qvigstad
12sa7_techdat01.png
12SA7: SEL Handbuch 1964
Peter Hoddow

Usage in Models 10= 1939?? ; 63= 1939? ; 200= 1939 ; 38= 1940?? ; 78= 1940? ; 218= 1940 ; 80= 1941?? ; 86= 1941? ; 276= 1941 ; 48= 1942?? ; 104= 1942? ; 81= 1942 ; 2= 1943?? ; 7= 1943? ; 4= 1943 ; 3= 1944 ; 13= 1945?? ; 17= 1945? ; 48= 1945 ; 24= 1946?? ; 86= 1946? ; 515= 1946 ; 63= 1947?? ; 50= 1947? ; 251= 1947 ; 51= 1948?? ; 34= 1948? ; 214= 1948 ; 59= 1949?? ; 46= 1949? ; 92= 1949 ; 76= 1950?? ; 30= 1950? ; 50= 1950 ; 52= 1951?? ; 36= 1951? ; 52= 1951 ; 27= 1952?? ; 37= 1952? ; 44= 1952 ; 15= 1953?? ; 13= 1953? ; 12= 1953 ; 17= 1954?? ; 10= 1954? ; 7= 1954 ; 11= 1955?? ; 17= 1955? ; 1= 1955 ; 11= 1956? ; 1= 1957?? ; 1= 1958?? ; 4= 1958? ; 2= 1959? ; 2= 1960?? ; 1= 1963 ; 1= 1967?? ; 1= 2020 ; 1= 9999? ; 21= 9999

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):3414

Collection of

 
12sa7_877_rm400s.jpg

12SA7
 

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