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ID = 2454
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Triode, vacuum   Audio Frequency 
  Ca. 1925 up to 1945 rare.
Identical to A435
Similar Tubes
Normally replaceable-slightly different:
  407H ; 4AAF ; A430_Philips ; B25_Radiofotos ; D40 ; RO4135
Other characteristic (electr. data):
Heater different:
Other base:
First year 1927 Tube leaflet collection E.Erb Analysis by original leaflets
Predecessor Tubes A430_Philips  

Base Europe 4-Pin B4 + side contact (Codex=Eo) Top contact screw type.
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.06 Ampere / Direct / Battery =

HF amplification. The anode can be connected by the top screw cap (wire has to be removed), or by the anode pin (wire in place). Also made with UX4 base.

Dimensions (WHD)
incl. pins / tip
42 x 102 x mm / 1.65 x 4.02 x inch
Information source - - Manufacturers Literature   R306H 10-12-1927
L'ABCDaire des lampes de TSF des jeunes années   p. 21
-- Collector info (Sammler)
Taschenbuch zum Röhren-Codex 1948/49

euro_triode_cap.png A435: own design
Jacob Roschy

Just Qvigstad
A435: own collection
Peter den Boer

More ...
Usage in Models 1= 1927?? ; 3= 1927 ; 1= 1928? ; 1= 1928 ; 1= 1929?? ; 1= 1929 ; 2= 1930?? ; 1= 1930?

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):11

Collection of



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