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

Other (3,257 tube types), Pre (2,314 tube types), Power (1,030 tube types), Rectifier (740 tube types)
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Tube-number record

6C9D

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ClassHigh-frequency triode
BaseOctal
Filament6.3 V @ 575 mA

Construction

Primary TypeTriode
Envelopeglass
Sections1

Filament / Heater

Heater NotesIndirectly heated

Absolute Maximum Ratings

Plate Voltage300 V
Plate Dissipation5.5 W
Cathode Current25 mA
H-C Voltage100 V

Audio Performance

Power Output1 W
Key Features
  • Disc seals
  • Indirectly heated oxide-coated cathode
  • Resistant to high humidity
  • Power amplification at UHF

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Self-bias250 V10400—5015 mA

Application Notes

Designed for power amplification over a wave band from 33 cm. Resistant to ambient temperature from -60 to +70°C.

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