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3B21

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ID = 17432
       
 
   
Tube type:  Full-Wave Rectifier inert gas filled   Power-supply 
Identical to 3B21 = 38401 = CV2959 = EL302.5
Similar Tubes
Different maximum ratings:
  3B22
First Source (s)
28.Oct.1942 : Electron Tube Registration List rec. 308

Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Filament Vf 2.5 Volts / If 5.5 Ampere / Direct
Description Graphite anode, argon filled rectifier. 500V peak, 1A. 
Information source Taschenbuch zum Röhren-Codex 1948/49   
Tube Lore (I)   

el1c_1.png 3B21: Manufacturer's Literature
Emilio Ciardiello


Just Qvigstad
3b21_1_3.png
3B21: Manufacturer's Literature
Emilio Ciardiello

 

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