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

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Tube-number record

342A

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BrandBell Telephone Laboratories
ClassWater Cooled Triode

Construction

Primary TypeTriode
EnvelopeWater Cooled
SectionsSingle

Filament / Heater

MaterialTungsten

Absolute Maximum Ratings

Plate Voltage20000 V
Plate Dissipation25000 W
Cathode Current2500 mA

Audio Performance

Power Output30000 W
Key Features
  • Water cooled
  • Tungsten filament
  • High power output

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Average Characteristics15000 V—6800401300 mA
Class B Audio Amplifier15000 V—2400—1600 mA
Class B Radio-Frequency Amplifier18000 V———

Application Notes

Used in Class B audio, Class B RF, and Class C RF power applications. Recommended driving power for audio stages is 1,000 watts.

Datasheets

Datasheet: 342A.pdf

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Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.

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    1400 mA
    Class C RF Oscillator/Power Amplifier18000 V———2500 mA
    Class C RF Amplifier - Plate Modulated12500 V———1200 mA