Tube-number record
7801
0 archive entries
7801 is a tube type in the TubeDatabase archive (class: Beam Power Tube). Recorded specifications: brand RCA, year 1961, construction Beam tetrode / beam power, base Metal, socket Coaxial, and maximum plate voltage 750 V. The archive does not yet hold a photographed example of this type.
BrandRCA
ClassBeam Power Tube
BaseCoaxial
Filament12.6 V @ 500 mA
Construction
Primary TypeBeam tetrode / beam power
EnvelopeCeramic-Metal
Base MaterialMetal
SectionsSingle
Filament / Heater
Heater NotesUnipotential Cathode; 40 sec minimum heating time
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| RF Power Amplifier - Class C | 650 V | 7500 | — | 30 | 65 mA |
| Class C Plate-Modulated | 600 V | — | — | — | 50 mA |
Application Notes
The plate terminal must be thermally coupled to a constant temperature device (heat sink) to limit terminal temperature to 250 C.
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