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3W4

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ID = 4394
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Vacuum Pentode   Power/Output 
Identical to 3W4 = 3S4SF
First year 11.Jun.1956 Electron Tube Registration List

Base Miniatur-7-Pin-Base B7G, USA 1940
Was used by Radio/TV-reception etc.
Filament Vf 2.8 Volts / If 0.025 Ampere / Direct / Battery =
Description

Heizdaten alternativ: Uf=1,4V; If=0,05A.

 
Literature Essential Characteristics, GE 1973   
 
pict0306.jpg
3W4: GH
Gerhard Hoffmann

 
3w4_sockel.png
3W4: Essential characteristics
Peter Hoddow

 
3w4_techdat.png
3W4: Essential characteristics
Peter Hoddow


Usage in Models 1= 1947

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

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