Tube-number record
3CX2500A3
0 archive entries
3CX2500A3 is a tube type in the TubeDatabase archive (class: Medium-Mu Triode). Recorded specifications: brand EIMAC, year 1967, construction Triode, base Metal, socket Special / none, maximum plate voltage 6000 V, and maximum plate dissipation 2500 W. The archive does not yet hold a photographed example of this type.
BrandEIMAC
ClassMedium-Mu Triode
BaseSpecial / none
Construction
Primary TypeTriode
EnvelopeCeramic and Metal
Base MaterialMetal
SectionsSingle
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| RF Power Amplifier or Oscillator | 4000 V | 20000 | — | 22.5 | 2500 mA |
| RF Power Amplifier or Oscillator | 6000 V | 20000 | — | 22.5 | 2080 mA |
| AF Power Amplifier or Modulator | 6000 V | — | — | 22.5 |
Application Notes
Forced-air cooling must be provided to hold the ceramic-to-metal seals and anode core temperature below 250°C. Filament voltage should be 7.5V with max allowable variations of 7.12 to 7.87V.
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