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12SJ7

Information - Help 
ID = 3714
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: RCA (RCA Victor Co. Inc.); New York (NY) 
Tube type:  Vacuum Pentode   Universal 
Identical to 12SJ7 = VT-162 = CV697
Similar Tubes
Other shape (e.g. bulb type):
  12SJ7GT
Heater different:
  6SJ7
First Source (s)
02.Feb.1939 : Electron Tube Registration List

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Uka)
Was used by Radio/TV-reception etc.
Filament Vf 12.6 Volts / If 0.15 Ampere / Indirect / Parallel / series AC/DC
Description

90 VDC max between heater and cathode, direct connection recommended: source GE datasheet.

 
Tube prices 3 Tube prices (visible for members only)
Literature Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   
  12sj7.png
  12SJ7: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
 
12sj7_494rm400s.jpg
12SJ7: Collection JR
Jacob Roschy

 
12sj7_so.png
12SJ7: RCA Reference Book 1968
Michael Schlör

 

Usage in Models 2= 1938?? ; 1= 1939?? ; 11= 1939 ; 2= 1940?? ; 1= 1940? ; 1= 1940 ; 12= 1941 ; 5= 1942?? ; 2= 1942? ; 2= 1943? ; 1= 1944? ; 1= 1944 ; 4= 1945? ; 4= 1945 ; 3= 1946?? ; 6= 1946? ; 22= 1946 ; 4= 1947?? ; 4= 1947? ; 24= 1947 ; 4= 1948?? ; 4= 1948? ; 3= 1948 ; 6= 1949?? ; 8= 1949? ; 9= 1949 ; 3= 1950?? ; 5= 1950 ; 3= 1951?? ; 2= 1951 ; 2= 1953?? ; 2= 1953? ; 2= 1954? ; 2= 1955?? ; 2= 1955? ; 1= 1955 ; 1= 1956??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):171


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