Tube-number record
8239/3CX3000F1
0 archive entries
8239/3CX3000F1 is a tube type in the TubeDatabase archive (class: Triode). Recorded specifications: brand Eimac, year 1967, construction Triode, socket Flexible / flying leads, maximum plate voltage 6000 V, and maximum plate dissipation 3000 W. The archive does not yet hold a photographed example of this type.
BrandEimac
ClassTriode
BaseFlexible / flying leads
Construction
Primary TypeTriode
EnvelopeMetal-Ceramic
SectionsSingle
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage6000 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class AB1 Audio (Point 1) | 4000 V | 11000 | — | 5.6 | 2750 mA |
| Class AB1 Audio (Point 2) | 5500 V | 11000 | — | 5.6 | 2200 mA |
Application Notes
Intended for use as an audio amplifier or modulator. Cooling air flow must be started when filament power is applied.
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