Tube-number record
4068
0 archive entries
4068 is a tube type in the TubeDatabase archive (class: Electrometer Pentode). Recorded specifications: brand Philips, construction Pentode, base Glass, socket Subminiature, and maximum plate voltage 45 V. The archive does not yet hold a photographed example of this type.
BrandPhilips
ClassElectrometer Pentode
BaseSubminiature
Construction
Primary TypePentode
EnvelopeGlass
Base MaterialGlass
SectionsSingle
Filament / Heater
MaterialDirectly heated
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode | 10 V | 10.5 | 10500000 | 110 | 0.005 mA |
Application Notes
Filament voltage must be applied before anode and screen-grid voltages. To avoid contamination, the tube should not be removed from its protective envelope until fitted.
Datasheets
Datasheet: 4068.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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