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TB 2,5/400

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ClassRF Power Triode
Basegiant 5p

Construction

Primary Typetriode
Envelopeglass
Sections1

Filament / Heater

Materialthoriated tungsten

Absolute Maximum Ratings

Plate Voltage3000 V
Plate Dissipation150 W
Grid 1 Voltage-300 V
Cathode Current255 mA

Audio Performance

Typical THD5%
Power Output700 W
Key Features
  • direct heating
  • high-frequency heating application
  • thoriated tungsten filament

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Typical Characteristics2500V2800-2560mA
RF Class C Telegraphy2500V---205mA
RF Class C Telegraphy2000V---205mA
RF Class B Telephony2500V---77mA

Application Notes

It is recommended to direct a low-velocity air flow on bottom and top seal if the tube is used at or near limiting values above 50 MHz.

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