Tube-number record
TOP 1289
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BrandThomson-CSF
ClassTraveling Wave Tube
BaseFlexible / flying leads
Filament6.3 V @ 300 mA
Construction
Primary TypeOther / special
EnvelopeRugged Metal
Base MaterialP.P.M focusing
SectionsSingle
Filament / Heater
Warm-up Time3s
Heater NotesHeater voltage range: 6.0 to 6.6 V; Heater surge current max: 550 mA.
Absolute Maximum Ratings
Plate Voltage1300 V
Plate Dissipation70 W
Grid 2 Voltage1300 V
Cathode Current60 mA
Audio Performance
Key Features
- Broadband amplifier
- Integral P.P.M focusing
- Natural convection and conduction cooling
- Rugged construction for airborne and mobile applications
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Saturated amplifier at 3 GHz | 1200 V | — | — | — | 45 mA |
Application Notes
The Wehnelt must be connected to the heater-cathode terminal. Designed for radar, communications equipment, and laboratory measurements.
Datasheets
Datasheet: TOP1289.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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