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ID = 2895
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Tube type:  Vacuum Pentode   Power/Output 
Identical to F443 = L495D
Similar Tubes
Normally replaceable-slightly different:
  4650 ; 822 ; F443N ; L497D ; P440 ; P460_Triotron ; PM24D
Other base:
First year 1930 - - Manufacturers Literature Zerdik-Information 1930 für den NF-Verstärker KV8.
First Source (s)
Jul.1930 : -- Original-techn. papers.
Oct.1932 : Philips Bulletin #D3
Successor Tubes 1933   4650   F443N  

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Foo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 2 Ampere / Direct / Specified voltage AC/DC

The F443 is the first series produced 25 watts output-pentode, thus it is the ancester of the later EL34. At 550 Vp and 250 Vg2 the F443N is capable of 41 watts output power in push-pull. [Jacob Roschÿ, 2003-03-17]

Text in other languages (may differ)
Information source Babani, International Radio Tube Encyclopaedia   p. 106 & 107
Universal Vade-Mecum, Electron Valves and Semiconductor Devices   Section 209, p. 410
- - Manufacturers Literature
Taschenbuch zum Röhren-Codex 1948/49

4_11.png F443: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad
F443: Philips Verstärkerröhren
Gerhard Heigl

More ...
Usage in Models 1= 1930 ; 1= 1931 ; 3= 1932

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):5

Collection of



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