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ID = 35395
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Thyratron 
Identical to 287A
Similar Tubes
Heater different:
  722A ; CE-722A

Base UY-Base, 5 Pins (USA, April 1927) Top contact with a cap.
Filament Vf 2.5 Volts / If 7 Ampere / Direct
Description Mercury thyratron. Oxide coated filament; 2.5KV PIV, 640mA.
Continental, Hytron and WE known manufacturers. Replaces 277A. 
Information source Tube Lore (I)   
- - Manufacturers Literature   

5au_2.png 287A
Emilio Ciardiello

Just Qvigstad
287A: own collection
Peter den Boer

More ...

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