Tube-number record
TD2-400A
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BrandMullard
ClassDisc seal triode
BasePlanar / disc seal
Construction
Primary TypeTriode
EnvelopeCeramic
SectionsSingle
Filament / Heater
MaterialThoriated tungsten
Absolute Maximum Ratings
Plate Voltage2200 V
Plate Dissipation400 W
Grid 1 Voltage-300 V
Cathode Current520 mA
Audio Performance
Power Output600 W
Key Features
- Disc seal
- Ceramic envelope
- Forced-air cooled
- Thoriated tungsten cathode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Characteristics | 2000 V | 10000 | 3300 | 33 | 200 mA |
| Class C Telegraphy Grounded Grid 470MHz | 2000 V | — | — | — | 400 mA |
Application Notes
R.F. oscillator, amplifier or frequency multiplier. For frequencies above 600Mc/s, filament voltage must be reduced to compensate for back bombardment heating.
Datasheets
Datasheet: TD2-400A.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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