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ID = 28410
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Triode, vacuum   Universal 
  <1925 rare.
Identical to B-II = B2 = B-II_Ideezet
Similar Tubes
Other base:
First year Apr.1922 Saga of the Vacuum Tube, Tyne Seite 416
First Source (s)
26.Oct.1923 : Radio Wereld, The Netherlands
Production stop 1926

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Filament Vf 1.8 Volts / If 0.15 Ampere / Direct / Battery =

also with Telefunken 4 pin base. The B II and BVI were the first Philips Miniwatt tubes and the first with a getter. In 1923 and 1924 this tube was designated B II and in 1925 it was designated B2.

Dimensions (WHD)
incl. pins / tip
42 x 80 x mm / 1.65 x 3.15 x inch
Weight 35 g / 1.23 oz
B-II: Auction site Marktplaats.
John Koster

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Peter den Boer

B-II: own collection
Peter den Boer

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from Just Qvigstad

Usage in Models 1= 1924 ; 1= 1925

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):2

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