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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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Tube-number record

RD300S

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BrandTesla
ClassTransmitting triode
Base5-pin

Construction

Primary TypeTriode
Envelopeall-glass
Base Materialsintered glass
Sectionssingle

Filament / Heater

Materialthoriated tungsten

Absolute Maximum Ratings

Plate Voltage4000 V
Plate Dissipation300 W
Cathode Current450 mA

Audio Performance

Key Features
  • Directly heated cathode
  • Thoriated tungsten cathode
  • Zirconium-coated graphite anode
  • Anode top cap
  • All-glass design

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
RF power amplifier or oscillator2000 V6000400024150 mA

Application Notes

Intended for use as an RF power amplifier or oscillator at frequencies up to 200 MHz, or as an AF amplifier.

Datasheets

Datasheet: RD300S.pdf

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Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.

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