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

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Tube-number record

17DAP4/SF17

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BrandPHILCO
ClassTelevision Picture Tube
BaseCRT base (B7 family)
Filament2.68 V @ 450 mA

Construction

Primary TypeDisplay / CRT
EnvelopeGlass
Base MaterialGlass-button
Sections1

Filament / Heater

Heater NotesControlled warm-up time for series string application

Absolute Maximum Ratings

Plate Voltage17600 V
Grid 2 Voltage550 V
Grid 1 Voltage-155 V
H-C Voltage200 V

Audio Performance

Key Features
  • Extremely short overall length
  • Low heater power
  • Metal backed screen
  • Straight gun (no ion trap)
  • External conductive coating

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Grid Drive Service14000 V————
Cathode Drive Service14000 V————

Application Notes

X-ray radiation shielding may be necessary if operated at anode voltages higher than 16,000 volts.

Filters

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