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217-C

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BrandRadio Corporation of America
ClassHalf-wave vacuum rectifier
BaseMedium-Metal-Shell Jumbo 4-Pin, Bayonet

Construction

Primary Typevacuum
Rectifier Typehalf-wave
EnvelopeT-18
Base MaterialMetal
Sections1

Filament / Heater

MaterialThoriated Tungsten

Absolute Maximum Ratings

Cathode Current150 mA

Audio Performance

Key Features
  • Not recommended for new equipment design
  • Thoriated Tungsten Filament

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