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ID = 30390
Great Britain (UK)
Brand: Standard Telephones and Cables Ltd. (STC); London, Foots Cray
Tube type:  Saturation diode   Power-supply 
Identical to 2A/230D = 29C1 = CV430

Base Octal (Int.Octal, IO) K8A, USA 1935
Filament Direct

Saturated diode intended as controlling element for stabiliser circuits.

  • Va 100 V typical, 250 V max ; Ia 3 mA max.
  • Anode current controlled from 0.2 mA to 2.2 mA for filament voltage from 3 to 4V
  • Corresponding filament current ranges from 0.7 to 0.8 A approx
  • Ia / Vf slope 6.5 mA/V typical
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
x 80 x 32 mm / x 3.15 x 1.26 inch
Weight 36 g / 1.27 oz
Information source - - Manufacturers Literature   Ediswan and Mazda data sheets dated December 1948

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