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6SD7

Information - Help 
ID = 3902
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Vacuum Pentode   Controlling (mu) 
Identical to 6SD7 = 6SD7GT

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Uka)
Filament Vf 6.3 Volts / If 0.3 Ampere / Specified voltage AND current AC/DC
Description

According to the nomenclature, an octal tube 6SD7 without a suffix as -G, -GT, etc. would presume a metal version of this tube, which apparently does not exist, see under 6SD7GT.

 
Text in other languages (may differ)
Information source Taschenbuch zum Röhren-Codex 1948/49   

6sd7.png
6SD7: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Anonymous 10 Collector

368_2.png 6SD7: Telefunken Werkstattbuch
Wolfgang Bauer

More ...

Just Qvigstad
6sd7_dat.png
6SD7: elektron taschenbuch 1952
Heinz Höger

Usage in Models 1= 1940 ; 1= 1946?? ; 1= 1959?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):3
 

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