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Tube Database (7,341 tube types · 1,270 archive entries)

Pre (2,630 tube types), Other (2,603 tube types), Power (1,292 tube types), Rectifier (816 tube types)
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SR-50 vacuum tube outline illustration

Tube-number record

SR-50

0 archive entries

SR-50 is a tube type in the TubeDatabase archive (class: Phototube). Recorded specifications: brand Westinghouse, construction Vacuum, socket 4-pin, and maximum plate voltage 500 V. The archive does not yet hold a photographed example of this type.

BrandWestinghouse
ClassPhototube
Base4-pin

Construction

Primary TypeVacuum
EnvelopeGlass

Filament / Heater

Absolute Maximum Ratings

Plate Voltage500 V
Cathode Current0.02 mA

Audio Performance

Filters

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Manufacturers

Brands

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    Key Features
    • High instantaneous speed of response
    • Semi-cylindrical cathode
    • Axial wire anode