Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 27733
Brand: Tungsram; Budapest (see also British T.)
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Vacuum Pentode   Power/Output 
Identical to APP4120_B5+1
Similar Tubes
Other base:
  APP4120 ; APP4120_B-6pin

Base Europe B5+1Pin (seldom, Eu U)
Filament Vf 4 Volts / If 1.2 Ampere / Indirect / Specified voltage AC/DC

This is the 4 volts AC version of the former B2043 / RENS1823d DC-mains tube. Simultaneously it was the first indirectly heated output tube for AC- mains operation in continental Europe. It was available in 3 base versions. [2003-01-22]

Text in other languages (may differ)
Information source Taschenbuch zum Röhren-Codex 1948/49   
APP4120_B5+1: g.h.
Gerhard Heigl

More ...
APP4120_B5+1: Telefunken Werkstattbuch
Wolfgang Bauer


You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]