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B443N

Information - Help 
ID = 83721
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Tube type:  Vacuum Pentode   Power/Output 
Identical to B443N
Similar Tubes
Other shape (e.g. bulb type):
  B443
Other base:
  B443S_B4
Predecessor Tubes B443  

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.15 Ampere / Direct / Specified voltage AC/DC
Description

The original B443 one was on the market as from 1927, this kind of internal construction was discontinued in the later years.

On the other hand, there was still a need for replacement in the older radio sets. So Philips started a new production line, but with a more modern technique. The letter "N" was added which means new, although the electrical performance should be equal to the genuine B443.

 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
x 103 x 50 mm / x 4.06 x 1.97 inch
Information source Universal Vade-Mecum, Electron Valves and Semiconductor Devices   Section 204, p. 403


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