Tube-number record
DF33
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BrandMullard
ClassRF Pentode
BaseOctal
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
MaterialDirectly heated
Absolute Maximum Ratings
Plate Voltage110 V
Grid 2 Voltage110 V
Audio Performance
Key Features
- Variable-mu
- Low filament consumption
- Controlled r.f. or i.f. amplifier
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| RF/IF Amplifier | 90 V | 750 | 1500000 | — | 1.2 mA |
Application Notes
Variable-mu r.f. pentode for use as a controlled r.f. or i.f. amplifier. Suitable for d.c. operation only.
Datasheets
Datasheet: DF33.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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