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ID = 15845
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Tube type:  Triode, vacuum   Power/Output 
Identical to F704
Similar Tubes
Normally replaceable-slightly different:
  25-450 ; GW402 ; P20 ; PH250 ; T730 ; W306_Marathon ; W704
Other base:
  F704_UX4 ; P25/450
Multiple differences or of other kind:
First year 1926 Tube leaflet collection E.Erb Analysis by original leaflets

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 7.5 Volts / If 1.2 Ampere / Direct / Specified voltage AC/DC

Va <450V; Pa <25W gm 2.1mA/V.
Designed as a modulator tube.

Dimensions (WHD)
incl. pins / tip
58 x 152 x mm / 2.28 x 5.98 x inch
Information source Taschenbuch zum Röhren-Codex 1948/49   

F704: ficha de valvulas
Getulio Jimenez-Gomez

f704_so.png F704: rtt
Anonymous 10 Collector

Just Qvigstad
F704: Philips Verstärkerröhren
Gerhard Heigl

Collection of



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