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ID = 16657
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Tube type:  Thyratron 
Identical to 4686
Similar Tubes
Multiple differences or of other kind:
First Source (s)
Jul.1936 : Philips Bulletin # D 38
Successor Tubes 1939   EC50  

Base Europe side contact P8A (Au P, 8SC) (Codex=Sa) Top contact with a cap.
Filament Vf 4 Volts / If 1.2 Ampere / Indirect / Specified voltage AC/DC
Dimensions (WHD)
incl. pins / tip
37 x 100 x mm / 1.46 x 3.94 x inch
Information source Taschenbuch zum Röhren-Codex 1948/49   

4686: Internet
Miguel Angel Trujillo-Rodriguez
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4686_so.png 4686: rtt
Anonymous 10 Collector

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Just Qvigstad
4686: Die Glimmröhre in der Technik - Nentwig
Gerhard Eisenbarth

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Usage in Models 1= 1935 ; 1= 1939?? ; 2= 1943??

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):4

Collection of



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