Tube-number record
7739
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BrandDuMont
ClassPlanar Triode
BasePlanar / disc seal
Filament6.1 V @ 1.18 mA
Construction
Primary TypeTriode
EnvelopePlanar
Sections1
Filament / Heater
MaterialUnipotential
Absolute Maximum Ratings
Plate Voltage350 V
Plate Dissipation7.2 W
Cathode Current325 mA
Audio Performance
Key Features
- Planar type triode
- Pulse oscillator
- Gold plated connections
- Unipotential cathode
- Any mounting position
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pulse Oscillator | 350 V | — | — | — | 250 mA |
Application Notes
Designed for use in pulse oscillator applications at frequencies in the order of 4,000 to 5,000 megacycles. Sufficient conduction and convection cooling should be provided to limit the grid and plate seal temperatures.
Datasheets
Datasheet: 7739.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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