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

Pre (2,630 tube types), Other (2,603 tube types), Power (1,292 tube types), Rectifier (816 tube types)
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Tube-number record

18550

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BrandPHILIPS
ClassRadiation Counter Tube

Construction

Primary TypeOther / special
EnvelopeThin wall metal/glass
Base Material28% chromium, 72% iron
Sections1

Filament / Heater

Absolute Maximum Ratings

Plate Voltage700 V

Audio Performance

Key Features
  • Thin wall halogen quenched
  • Beta radiation detection
  • Gamma radiation detection
  • Short dead time

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Radiation Counting600 V—5000000——

Application Notes

In order to prevent leakage the tube should be kept dry and well cleaned. Because of the small thickness of the cathode wall, the tube should be handled with utmost care.

Datasheets

Datasheet: 18550.pdf

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

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