Tube-number record
F-5680
0 archive entries
F-5680 is a tube type in the TubeDatabase archive (class: Power Triode). Recorded specifications: brand Federal, year 1950, construction Triode, maximum plate voltage 6000 V, and maximum plate dissipation 2500 W. The archive does not yet hold a photographed example of this type.
BrandFederal
ClassPower Triode
Construction
Primary TypeTriode
EnvelopeGlass
Sections1
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage6000 V
Plate Dissipation2500 W
Grid 1 Voltage-2000 V
Audio Performance
Power Output7200 W
Key Features
- Air-cooled anode
- Thoriated tungsten cathode
- Wide spacing between elements
- Lack of internal insulators
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Radio-Frequency Power Amplifier and Oscillator-Class C Telegraphy | 6000 V | — | — | 25 | 1400 mA |
| Audio-Frequency Power Amplifier and Modulator-Class B | 5000 V | — | 4000 | 25 | 2250 mA |
| Pulsed Operation | 15500 V | — | — | 25 | 200 mA |
Application Notes
Especially suitable for high voltage pulse applications due to wide element spacing and lack of internal insulators. Maximum ratings apply up to 30 megacycles.
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