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4631

Information - Help 
ID = 13617
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Tube type:  TRIODE (Detail uncertain)   Power/Output 
  Ca. 1925 up to 1945 very rare. ***
Identical to 4631 = R87 = CV1311 = CV1664 = 4020A
Similar Tubes
Other shape (e.g. bulb type):
  3A/108A

Base UV-Base (4 Pins+Bayonet, USA 1914 WE) (Codex=Bo)
Was used by Telephony
Filament Vf 2 Volts / If 0.25 Ampere / Direct
Dimensions (WHD)
incl. pins / tip
52 x 106 x mm / 2.05 x 4.17 x inch
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   
 
4631.jpg
4631: AH eigene Sammlung
Alexander Hofer

 
4631_so.png
4631: ARRL Handbook 1972
Michael Schlör

 
4631_dat.png
4631: Röhrenhandbuch Franzis Verlag
Heinz Höger


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