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

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Tube-number record

F8081 P2

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BrandCSF - Groupement Tubes Electroniques
ClassCathode Ray Tube (CRT)
BaseDiheptal
Filament6.3 V @ 600 mA

Construction

Primary TypeElectrostatic deflection and focus
EnvelopeGlass
Base MaterialGlass/Metal
Sections1

Filament / Heater

Heater NotesTolerance ±10%

Absolute Maximum Ratings

Plate Voltage13200 V
Grid 2 Voltage2200 V
Grid 1 Voltage-220 V
H-C Voltage140 V

Audio Performance

Key Features
  • Aluminized screen
  • High writing speed
  • High sensitivity
  • Low interelectrode capacitance
  • Low distortion
  • Internal graticule (P2A version)

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Example Operation10000 V————

Application Notes

Orientation and mounting instructions provided for pin alignment with trace axes. Recommends mu-metal shielding and specific isolation for grid 7 (post-acceleration).

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