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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

8243 / 3W5000F3

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BrandEimac
ClassPower Triode
BaseFlexible / flying leads

Construction

Primary TypeTriode
EnvelopeMetal-Glass / Water Cooled
Base MaterialFlexible grid and filament leads
SectionsSingle

Filament / Heater

MaterialThoriated tungsten

Absolute Maximum Ratings

Plate Voltage6000 V
Plate Dissipation5000 W
Cathode Current2500 mA

Audio Performance

Power Output13000 W
Key Features
  • Water cooled
  • Medium-mu
  • Flexible grid and filament leads
  • High output at low plate voltages

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class-C RF Power Amplifier (CW)4000 V200001000202500 mA
Class-C RF Power Amplifier (CW)5000 V200001000202500 mA
Class-C RF Power Amplifier (CW)6000 V200001000202080 mA
Plate Modulated RF Amplifier4000 V200001000201670 mA

Application Notes

Intended for amplifier, oscillator or modulator service below 30 Mc. Water cooling preferred for industrial applications where reserve anode dissipation is required.

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