Tube-number record
DF63
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BrandMullard
ClassPentode
BaseSubminiature
Construction
Primary TypePentode
EnvelopeSubminiature
Base MaterialGlass
Sections1
Filament / Heater
MaterialDirectly heated
Absolute Maximum Ratings
Plate Voltage90 V
Grid 2 Voltage67.5 V
Cathode Current2.5 mA
Audio Performance
Key Features
- Subminiature
- Variable-mu
- Battery operated
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode operation | 67.5 V | 850 | 1600000 | — | 1.7 mA |
Application Notes
Direct soldered connections to the leads must be at least 5mm from the seal and any bending of the valve leads must be at least 1.5mm from the seal.
Datasheets
Datasheet: DF63.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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