Summary
Triode, manufactured by Philips, Holland, equivalent to UX201A but fitted with an European style base..
Physical Description
Conical bulb with European style 4 pin base with plated metal shell.
More Information
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Collecting Areas
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Manufacturer
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Inscriptions
On bulb: " C509 / Philips / Miniwatt / Sold for / amateur use only ", " 4.5-5.3V / 20-120V / Made in Holland / 139 "
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Classification
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Category
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Discipline
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Type of item
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Overall Dimensions
110 mm (Height), 45 mm (Outside Diameter)
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Keywords