Tube-number record
7204/4CX250F
0 archive entries
7204/4CX250F is a tube type in the TubeDatabase archive (class: Beam Power Tube). Recorded specifications: brand RCA, year 1962, construction Beam tetrode / beam power, socket Special / none, maximum plate voltage 2000 V, and maximum plate dissipation 250 W. The archive does not yet hold a photographed example of this type.
BrandRCA
ClassBeam Power Tube
BaseSpecial / none
Filament26.5 V @ 580 mA
Construction
Primary TypeBeam tetrode / beam power
EnvelopeCeramic-Metal
Sections1
Filament / Heater
Warm-up Time30s
Heater NotesUnipotential cathode. Heater voltage should be reduced at higher frequencies to compensate for back bombardment.
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| RF Amplifier Note 3 | 1000 V | — | — | — | 150 mA |
| RF Amplifier Note 6 (475 Mc) | 2000 V | — | — | — | — |
Application Notes
For use at frequencies up to 500 Mc. Bilaterally interchangeable with the 4CX250F.
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