Tube-number record
DF 668
0 archive entries
DF 668 is a tube type in the TubeDatabase archive (class: HF-Pentode). Recorded specifications: brand VEB Funkwerk Erfurt, year 1956, construction Pentode, socket Subminiature, maximum plate voltage 110 V, and maximum plate dissipation 0.5 W. The archive does not yet hold a photographed example of this type.
BrandVEB Funkwerk Erfurt
ClassHF-Pentode
BaseSubminiature
Construction
Primary TypePentode
EnvelopeSubminiature
Sections1
Filament / Heater
Absolute Maximum Ratings
Plate Voltage110 V
Plate Dissipation0.5 W
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode | 90 V | 2300 | 350000 | 16 | 5.7 mA |
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