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ID = 58088
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Voltage Regulator, single 
Identical to CV3987 = M8216 = 5644

Base Subminiatur-8, with space 1/8, B8D Wires only.
Was used by Industrial
Filament No heater
Description Special Quality Miniature Voltage Stabiliser Tube
Nominal burning Voltage: 90V
Operating current range: 5 to 25mA.
Voltage regulation over above current range: 5V
Maximumum regulation resistance: 250 ohms
Typical Voltage stability (% per 1000 hours): +2.0

Made by Philips and/or by Philips owned marks, as Amperex, Mullard, Valvo.


Information source - - Manufacturers Literature   Mullard 1957
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CV3987: Manufacturer's Literature
Emilio Ciardiello


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