Tube-number record
TH 326
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BrandThomson-CSF
ClassTriode
Filament5 V @ 2000 mA
Construction
Primary TypeTriode
EnvelopeCeramic-metal
SectionsSingle
Filament / Heater
MaterialOxide coated
Warm-up Time180s
Heater NotesIndirect heating. Heater voltage must be reduced in HF operation to compensate for cathode back bombardment.
Absolute Maximum Ratings
Plate Voltage2000 V
Plate Dissipation270 W
Grid 1 Voltage-50 V
Cathode Current250 mA
Audio Performance
Key Features
- Forced air cooled
- Ceramic-metal high gain triode
- Planar structure
- Operates without grid current in TV translators
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Linear Amplifier for TV Translator | 1800 V | 80000 | 3125 | 250 | 140 mA |
Application Notes
Cooling airflow must be established before electrode voltage and maintained for at least 3 minutes after heater removal.
Datasheets
Datasheet: TH326.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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