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P440N

Information - Help 
ID = 11424
       
Country:
Austria
Brand: Triotron (tubes) = Brand of Schrack, Austria
Tube type:  Vacuum Pentode   Power/Output 
Identical to P440N = APP4100 = L4150D = RENS1374d = E453
Similar Tubes
Normally replaceable-slightly different:
  APP4120
Other base:
  P440N_B-6pin ; P440N_B5+1

Base Europe 5-Pin , B5 + side contact (Codex=Fdo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1.1 Ampere / Indirect / Specified voltage AC/DC
Description

Laut Triotron-Liste wurde diese Röhre auch mit der Anode an der Seitenschraube hergestellt, was sehr wahrscheinlich fehlerhaft ist.

 
Information source Babani, International Radio Tube Encyclopaedia   p. 126 & 127
- - Manufacturers Literature   1935
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49

e453_sock~~2.png P440N: Telefunken Werkstattbuch
Anonymous 15 Collector

More ...

Just Qvigstad
p440ndata.png
P440N: own collection
Peter den Boer

Collection of

 
p440_2.jpeg

P440N
 

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