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ID = 48428
Soviet Union
Brand: Common type USSR (SU) tube/semicond.
Tube type:  Half-Wave Vacuum Rectifier   Power-supply 
Identical to В1-0,1/40 = W1-0,1/40

Base Top contact with a cap.
Filament Vf 5 Volts / If 6 Ampere / Direct / Specified voltage AC/DC
Description Pa <75W; Va <40kV peak 12kV rms; Ia <2A peak 100mA mean

NOTE that this tube is also marked and marketed in Poland as the W1-0,1/40 on account of the different transcription of the Russian alphabet. 

Dimensions (WHD)
incl. pins / tip
53 x 205 x mm / 2.09 x 8.07 x inch
Information source - - -   
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В1-0,1/40: A. Buller archive
Andrzej Buller

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В1-0,1/40: Z. E. "Lamina" - original datasheet
Andrzej Buller

В1-0,1/40: Z. E. "Lamina" - original datasheet
Andrzej Buller

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