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

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Tube-number record

TRAVELING WAVE TUBE

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BrandEimac
ClassMicrowave Tube
BaseCoaxial
Filament6.3 V @ 0.6 mA

Construction

Primary TypeOther / special
EnvelopeCeramic and Metal
SectionsSingle

Filament / Heater

Heater NotesMinimum heating time: 60 seconds

Absolute Maximum Ratings

Plate Voltage3000 V
Grid 1 Voltage-40 V
Cathode Current25 mA

Audio Performance

Key Features
  • Periodic Permanent Magnet (PPM) focusing
  • Ceramic and metal construction
  • Integral heat sink/mounting flange
  • Passive cooling

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Saturated Power Output2900 V———23 mA

Application Notes

Wide bandwidth, high power output and high gain make the EM-1025 ideally suited for signal generators, power amplifier units or frequency-multiplier applications.

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