Tube-number record
7638
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BrandMullard
ClassTraveling Wave Tube
BaseSpecial / none
Filament6.3 V @ 500 mA
Construction
Primary TypeOther / special
EnvelopeGlass
Sections1
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage1500 V
Plate Dissipation0.9 W
Grid 2 Voltage400 V
Grid 1 Voltage200 V
Cathode Current0.6 mA
H-C Voltage50 V
Audio Performance
Power Output0.006 W
Key Features
- Broadband low power amplifier
- Unpackaged construction
- Mounting position: Any
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Input amplifier | 1350 V | — | — | — | 0.55 mA |
Application Notes
Designed for use in the 7 to 11.5 Gc/s band as an input amplifier using a periodic permanent magnet system.
Datasheets
Datasheet: 7638.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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