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

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Tube-number record

30D5

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BrandEdiswan Mazda
ClassCathode Ray Tube
BaseOctal
Filament4 V @ 750 mA

Construction

Primary TypeDisplay / CRT
Envelope9 inch diameter
SectionsSingle

Filament / Heater

Heater NotesIndirectly heated

Absolute Maximum Ratings

Plate Voltage9000 V
Grid 2 Voltage1700 V

Audio Performance

Key Features
  • Special long-afterglow screen
  • Suitable for P.P.I display
  • Double layer type screen
  • Blue flash with a yellow afterglow
  • Electrostatic focusing
  • Magnetic deflection

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Typical Operation (P.P.I display)8000 V————

Application Notes

The 1st anode must always be at least 60 volts positive with respect to the 2nd anode. All maximum ratings are Absolute values not Design Centres.

Datasheets

Datasheet: 30D5.pdf

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

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