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

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Tube-number record

3R/252E

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BrandSTC
ClassIndustrial Triode

Construction

Primary TypeTriode
EnvelopeIntegral Water Jacket
Sections1

Filament / Heater

MaterialThoriated tungsten

Absolute Maximum Ratings

Plate Voltage13000 V
Plate Dissipation24000 W
Grid 1 Voltage-1500 V
Cathode Current6000 mA

Audio Performance

Key Features
  • Water-cooled
  • Integral water jacket
  • High mutual conductance
  • High efficiency
  • Thoriated tungsten filament

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class C Industrial Heating Oscillator12000 V60000—245000 mA

Application Notes

Specifically designed for industrial heating applications. Capable of operation at frequencies up to 100 Mc/s. Large safety factor for variable-load conditions.

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