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Tube Database (7,341 tube types · 1,270 archive entries)

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Tube-number record

3CX2500F3

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BrandEIMAC
ClassTransmitting Triode
BaseFlexible / flying leads

Construction

Primary TypeTriode
EnvelopeCeramic and Metal
Base MaterialMetal
Sections1

Filament / Heater

MaterialThoriated Tungsten

Absolute Maximum Ratings

Plate Voltage6000 V
Plate Dissipation2500 W
Cathode Current2500 mA

Audio Performance

Power Output13000 W
Key Features
  • Forced-air cooled
  • External anode
  • All ceramic and metal construction
  • Flexible leads

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
RF Power Amplifier or Oscillator4000 V20000—22.52500 mA
RF Power Amplifier or Oscillator5000 V20000—22.52500 mA
RF Power Amplifier or Oscillator6000 V20000—22.5

Application Notes

The 3CX2500F3 is designed for use as an amplifier, oscillator, or modulator at frequencies below 30 MHz. It provides a greater margin of safety for operating temperatures compared to glass equivalents.

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Manufacturers

Brands

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    2080 mA
    Plate-Modulated RF Power Amplifier4000 V———1670 mA
    Plate-Modulated RF Power Amplifier5000 V———1250 mA
    Audio Frequency Amplifier or Modulator4000 V—2200—4000 mA
    Audio Frequency Amplifier or Modulator6000 V—4650—3000 mA