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425A_WE

Information - Help 
ID = 35045
       
Country:
United States of America (USA)
Brand: Western Electric Company Inc.; New York (NY)
Tube type:  Thyratron Cold-cathode 
Identical to 425A_WE
Similar Tubes
Other characteristic (electr. data):
  426A_WE
Multiple differences or of other kind:
  411A_WE
Predecessor Tubes 333A  

Base Wires only.
Filament
Description Miniature, red lacquered bulb on molded base with flying leads. Cold cathode tetrode with separate cathode for starter electrode, so that the starter is isolated from the main circuit. 180V, 5mA. Intended as telephone ringer isolator. Replaces 333A 
Information source Tube Lore (I)   
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Collection of

 
20200803_194851.jpg

425A_WE
 

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