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1N40

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ID = 34560
       
Country:
United States of America (USA)
Brand: Sylvania (Hygrade, GTE, Nilco); Emporium (PA)
Tube type:  Solid-State-Diode 
Identical to 1N40
Similar Tubes
Other base:
  1N41
First Source (s)
Jan.1950 : Radio-Magazin (Das) mit Fernseh-Magazin Nr.1 1950 S.22
15.Aug.1947 : Electron Tube Registration List 597
Base Octal (Int.Octal, IO) K8A, USA 1935
Description Sylvania Varistor: it was a network of four selected and matched germanium diodes, intended for balanced modulator use.
Reverse voltage continuous = 25V
Forward current @ 1V drop = 12.75mA
Reverse current @ -10V = 40uA 
Text in other languages (may differ)
Information source - - Manufacturers Literature   
1n40_umgeb.gif
1N40: Das Radio-Magazin Nr.1 1950 S. 22
Günther Stabe † 19.8.20
1n40_ff_s_1.gif 1N40: Electronics 03.1951
Günther Stabe † 19.8.20

Just Qvigstad 		1n40_data.png
1N40: Sylvania Manual
Heinz Höger
Usage in Models 1= 1970?? ; 1= 1980??
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2

Collection of

Emilio Ciardiello (I)
 
us_ohmite_1n40_front.jpg

1N40
 
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