Tube-number record
9C25
0 archive entries
9C25 is a tube type in the TubeDatabase archive (class: Power Triode). Recorded specifications: brand RCA, construction Triode, base Metal, socket Special / none, maximum plate voltage 11500 V, and maximum plate dissipation 17500 W. The archive does not yet hold a photographed example of this type.
BrandRCA
ClassPower Triode
BaseSpecial / none
Construction
Primary TypeTriode
EnvelopeForced-Air Cooled Metal-Glass
Base MaterialMetal
SectionsSingle
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| AF Power Amplifier & Modulator - Class B (2 tubes) | 10500 V | — | — | 32 | 3500 mA |
| RF Power Amplifier - Class B Telephony (Grounded-Filament) | 10000 V | — | — | 32 | 2050 mA |
| RF Power Amplifier & Oscillator - Class C Telegraphy | 11000 V | — | — |
Application Notes
Designed for communication and industrial service. Effectively isolates the filament from the plate circuit in grounded-grid circuits, generally making neutralization unnecessary.
Datasheets
Datasheet: 9C25.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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