Tube-number record
UF85
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UF85 is a tube type in the TubeDatabase archive (class: R.F. Pentode). Recorded specifications: brand Philips, 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.
BrandPhilips
ClassR.F. Pentode
BaseNoval (B9A)
Filament19 V @ 100 mA
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesIndirect by A.C. or D.C.; series supply
Absolute Maximum Ratings
Plate Voltage250 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| R.F. or I.F. amplifier (Mode 1) | 100 V | 5000 | 250000 | — | 5.5 mA |
| R.F. or I.F. amplifier (Mode 2) | 170 V | 5900 | 300000 | — | 9.7 mA |
| R.F. or I.F. amplifier (Mode 3) | 200 V | 6100 | 350000 | — |
Application Notes
Designed for use as I.F. amplifier in A.M. receivers and as R.F. or I.F. amplifier in F.M. receivers or broadband amplifiers.
Datasheets
Datasheet: UF85.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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