Tube-number record
E 447
0 archive entries
E 447 is a tube type in the TubeDatabase archive (class: Variable-mu HF Pentode). Recorded specifications: brand Philips Miniwatt, construction Pentode, socket O-base, maximum plate voltage 400 V, and maximum plate dissipation 1.5 W. The archive does not yet hold a photographed example of this type.
BrandPhilips Miniwatt
ClassVariable-mu HF Pentode
BaseO-base
Filament4 V @ 1100 mA
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage400 V
Plate Dissipation1.5 W
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Normal Operation | 200 V | 2000 | 1000000 | 2000 | 4.5 mA |
| Cut-off / Reduced Gain | 200 V | 5 | 10000000 | — | 0.01 mA |
Application Notes
Designed for H.F. (High Frequency) and I.F. (Intermediate Frequency) amplification.
Datasheets
Datasheet: E447.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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