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

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Tube-number record

C21AF

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BrandBRIMAR
ClassTelevision Tube (CRT)
BaseCRT base (B8H)
Filament4 V @ 300 mA

Construction

Primary TypeOther / special
EnvelopeGrey glass faceplate, aluminized screen
SectionsTripotential electrostatic focus

Filament / Heater

Heater Notes0.3 amp nominal

Absolute Maximum Ratings

Plate Voltage16000 V
Grid 2 Voltage750 V
Grid 1 Voltage-150 V
H-C Voltage200 V

Audio Performance

Key Features
  • Tripotential electrostatic focus
  • Aluminized screen
  • External conductive coating
  • Rectangular 110° deflection

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Typical Operation16000 V———0.15 mA

Application Notes

No harmful X-ray radiation is produced by this tube when operated at final anode voltages below 16 kV. At voltages above 16 kV, some shielding may be necessary.

Datasheets

Datasheet: C21AF.pdf

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

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