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ID = 6851
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  High Voltage Half-Wave Mercury-Vapor Rec 
Identical to 266B
Similar Tubes
Normally replaceable-slightly different:
Other base:

Base Top contact with a cap.
Filament Vf 5 Volts / If 42 Ampere / Direct
Description 22KV PIV, 5A. Graphite anode.
Amperex, Federal, GE, WE.
Note: GE and WE claim 30A filament drain at 5V. 
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   
Tube Lore (I)

266b.png 266B: Western electric electron tubes
Miguel Angel Trujillo-Rodriguez


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