Tube-number record
EF 42
0 archive entries
EF 42 is a tube type in the TubeDatabase archive (class: R.F. PENTODE). Recorded specifications: brand PHILIPS, construction Pentode, socket Rimlock, maximum plate voltage 300 V, and maximum plate dissipation 3.5 W. The archive does not yet hold a photographed example of this type.
BrandPHILIPS
ClassR.F. PENTODE
BaseRimlock
Filament6.3 V @ 0.33 mA
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesIndirect by A.C. or D.C.; parallel supply
Absolute Maximum Ratings
Plate Voltage300 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Wide-band amplifier | 250 V | 9000 | 500000 | 85 | 10 mA |
Datasheets
Datasheet: EF42.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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