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280A

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ID = 25400
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Half-Wave Mercury-Vapor Rectifier 
Identical to 280A
Similar Tubes
Other base:
  253A

Base UX-Base (4 Pins (2 thick, USA 1924, UX) Top contact with a cap.
Filament Vf 2.5 Volts / If 3 Ampere / Direct / Specified voltage AC/DC
Information source -- Collector info (Sammler)   W.E.Greybar catalog 1933

280as.gif 280A: KoBi
Konrad Birkner † 12.08.2014


Just Qvigstad
280ad.png
280A: KoBi
Konrad Birkner † 12.08.2014

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