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ID = 31637
Great Britain (UK)
Brand: Lissen Ltd.; London and Richmond, Surrey
Tube type:  Half-Wave Vacuum Rectifier   Power-supply 
Identical to U625

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 6 Volts / If 0.5 Ampere / Direct
Dimensions (WHD)
incl. pins / tip
43 x 112 x mm / 1.69 x 4.41 x inch
Weight 45 g / 1.59 oz
Information source -- Collector info (Sammler)   
History of the British Radio Valve to 1940   p. 147

Just Qvigstad
Usage in Models 1= 1930??

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):1

Collection of



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