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7C4

Information - Help 
ID = 5128
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Signal Diode - one single system   UHF 
Identical to 7C4 = 1203_Sylvania = 1203A = VT-243
First Source (s)
26.Mar.1943 : Tube Lore (I)
26.Mar.1943 : Electron Tube Registration List

Base Loctal-8, B8G (Sylvania, 1938) (Codex=Wh)
Filament Vf 6.3 Volts / If 0.15 Ampere / Indirect / Parallel / series AC/DC
Description

420V PIV at 9mA.

 
Tube prices 3 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   
  7c4.png
  7C4: Internet
Miguel Angel Trujillo-Rodriguez
 
7c4frent.jpg
7C4: Colección propia
Marcelino Iniesta Fernandez

 
lo101_g.gif
7C4: RTT Schwandt
Günther Stabe

 
7c4_techdat01.png
7C4: Sylvania Technical Manual
Peter Hoddow


from Just Qvigstad

Usage in Models 1= 1948 ; 1= 1950

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2


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