Tube-number record
DF66
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DF66 is a tube type in the TubeDatabase archive (class: Subminiature A.F. Voltage Amplifying Pentode). Recorded specifications: brand Mullard, construction Pentode, socket B5 family, and maximum plate voltage 45 V. The archive does not yet hold a photographed example of this type.
BrandMullard
ClassSubminiature A.F. Voltage Amplifying Pentode
BaseB5 family
Construction
Primary TypePentode
EnvelopeSubminiature
Filament / Heater
MaterialDirectly heated
Absolute Maximum Ratings
Plate Voltage45 V
Grid 2 Voltage45 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Characteristics | 22.5 V | 100 | 2000000 | 11.5 | 0.05 mA |
Application Notes
Subminiature voltage amplifying pentode primarily intended for use with an H.T. battery supply of 22.5 volts in hearing-aids. Direct soldered connections to the leads must be at least 5 mm from the seal.
Datasheets
Datasheet: DF66.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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