Tube-number record
880
0 archive entries
880 is a tube type in the TubeDatabase archive (class: Power Triode). Recorded specifications: brand RCA, year 1950, construction Triode, base Metal terminals, socket Special / none, maximum plate voltage 10500 V, and maximum plate dissipation 20000 W. The archive does not yet hold a photographed example of this type.
BrandRCA
ClassPower Triode
BaseSpecial / none
Construction
Primary TypeTriode
EnvelopeGlass and Water-Cooled Plate
Base MaterialMetal terminals
Sections1
Filament / Heater
MaterialTungsten
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| AF Power Amplifier & Modulator - Class B (Values for 2 tubes) | 10000 V | — | 3100 | 20 | 7000 mA |
| RF Power Amplifier - Class B Telephony | 10000 V | — | — | 20 | 2750 mA |
| RF Power Amplifier & Oscillator - Class C Telegraphy | 10000 V | — | — |
Application Notes
The filament current should never exceed 480 amperes, even momentarily. Water flow must start before application of any voltages.
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