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

Other (3,257 tube types), Pre (2,314 tube types), Power (1,030 tube types), Rectifier (740 tube types)
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Tube-number record

PMU-426

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ClassPulse Modulator Triode
Filament26 V @ 3200 mA

Construction

Primary TypeTriode
Envelopemetal-ceramic
Sectionssingle

Filament / Heater

Materialoxide-coated
Warm-up Time3s
Heater NotesIndirectly heated cathode

Absolute Maximum Ratings

Plate Voltage30000 V
Plate Dissipation500 W
Grid 1 Voltage-600 V
Cathode Current33000 mA

Audio Performance

Key Features
  • Indirectly heated
  • Oxide-coated cathode
  • Metal-ceramic construction
  • Forced air cooling

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Pulse Modulator2500 V———30000 mA

Application Notes

Used for pulse power switching in pulse modulators in RF equipment.

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