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S4VB

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ID = 2574
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
Identical to S4VB = E452T
Similar Tubes
Normally replaceable-slightly different:
  4YSGAC ; TE524
Other characteristic (electr. data):
  S4VA
Predecessor Tubes S4V   S4VA  

Base Europe 5-Pin (O5A, B5) (Codex=Fc) Top contact screw type
Filament Vf 4 Volts / If 1 Ampere / Indirect / Parallel, (AC/DC)
Description Ra = 257k ohms. gm 3.5mA/V at Va=150, Vs=75 and Vg=-1

Lower impedance than the S4VA 

Literature Taschenbuch zum Röhren-Codex 1948/49   
 
s4vb_mullard_2.jpg
S4VB: Sammlung KHB
Karl - Heinz Bossan

 
9_47.png
S4VB: Telefunken Werkstattbuch
Wolfgang Bauer

 

Usage in Models 3= 1929 ; 1= 1930 ; 7= 1931? ; 8= 1931 ; 2= 1932? ; 13= 1932 ; 4= 1933? ; 5= 1933 ; 6= 1934? ; 1= 1934

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):50


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