Tube-number record
3CX20,000A3
0 archive entries
3CX20,000A3 is a tube type in the TubeDatabase archive (class: Industrial Triode). Recorded specifications: brand EIMAC (Varian), year 1971, construction Triode, base Coaxial, socket Special / none, maximum plate voltage 12000 V, and maximum plate dissipation 20000 W. The archive does not yet hold a photographed example of this type.
BrandEIMAC (Varian)
ClassIndustrial Triode
BaseSpecial / none
Construction
Primary TypeTriode
EnvelopeCeramic/Metal
Base MaterialCoaxial
SectionsSingle
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| RF Linear Amplifier Class AB2 | 7500 V | — | — | — | 7400 mA |
| RF Power Amplifier Class C Telegraphy | 10000 V | — | — | — | 7900 mA |
| Plate Modulated RF Power Amplifier Class C | 6500 V | — | — | — |
Application Notes
Recommended for Class C amplifier service, or Class B radio frequency and audio frequency amplifier use. Forced air cooling required (base-to-anode direction).
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