Tube-number record
8847
0 archive entries
8847 is a tube type in the TubeDatabase archive (class: High-Mu Planar Triode). Recorded specifications: brand EIMAC, year 1970, construction Triode, socket Coaxial, maximum plate voltage 2500 V, and maximum plate dissipation 150 W. The archive does not yet hold a photographed example of this type.
BrandEIMAC
ClassHigh-Mu Planar Triode
BaseCoaxial
Filament6.3 V @ 1300 mA
Construction
Primary TypeTriode
EnvelopeCeramic/Metal
Sections1
Filament / Heater
Heater NotesUnipotential, oxide-coated cathode
Absolute Maximum Ratings
Plate Voltage2500 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| General Performance | — | 38000 | — | 75 | 160 mA |
Application Notes
Can be conduction, convection, heat sink, or liquid cooled. Forced-air cooling requires external radiators.
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