Tube-number record
6F25
0 archive entries
6F25 is a tube type in the TubeDatabase archive (class: Screened Variable Mu H.F. Pentode). Recorded specifications: brand Ediswan Mazda, construction Pentode, socket Noval (B9A), maximum plate voltage 250 V, and maximum plate dissipation 2.5 W. The archive does not yet hold a photographed example of this type.
BrandEdiswan Mazda
ClassScreened Variable Mu H.F. Pentode
BaseNoval (B9A)
Filament6.3 V @ 300 mA
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated—for series or parallel operation
Absolute Maximum Ratings
Plate Voltage250 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| H.F. Pentode | 170 V | 12500 | — | 35 | 11.5 mA |
Application Notes
Very suitable for use as the common I.F. amplifier in AC or AC/DC television receivers.
Datasheets
Datasheet: 6F25.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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