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2B21

Information - Help 
ID = 35462
       
 
   
Tube type:  High-vacuum Rectifier 
Identical to 2B21
Similar Tubes
Normally replaceable-slightly different:
  2X2

Base UX-Base (4 Pins (2 thick, USA 1924, UX) Top contact with a cap.
Filament Vf 2.5 Volts / If 1.75 Ampere / Direct
Description HV rectifier. Improved version of 2X2. 
Information source Tube Lore (I)   
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4ab_2.png 2B21
Emilio Ciardiello


Just Qvigstad
 

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