Tube-number record
TH 308
0 archive entries
BrandThomson-CSF
ClassHigh Gain Triode
BaseCoaxial
Filament6.3 V @ 5500 mA
Construction
Primary TypeTriode
EnvelopeCeramic Metal
SectionsSingle
Filament / Heater
MaterialOxide coated
Warm-up Time3s
Heater NotesIndirectly heated. 6.3V nominal; reduced to 5.7V for high frequency operation to compensate for back bombardment.
Absolute Maximum Ratings
Plate Voltage2200 V
Plate Dissipation700 W
Grid 1 Voltage-200 V
Cathode Current600 mA
Audio Performance
Key Features
- Forced air cooled
- Ceramic-metal construction
- Planar structure
- High gain
- Linear amplifier for TV translators
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Linear TV Translator (Vision and Sound) | 1800 V | 45000 | 1777.78 | 80 | 200 mA |
Application Notes
Specifically designed for highly linear amplifier operating up to 1000 MHz without grid current in TV translators handling both sound and vision signals.
Datasheets
Datasheet: TH308.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
0 results