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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

7BP7-B

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BrandGeneral Electric
ClassCathode-Ray Tube
BaseOctal
Filament6.3 V @ 600 mA

Construction

Primary TypeDisplay / CRT
EnvelopeGlass
Base MaterialLong Medium-shell Octal 8-Pin
SectionsSingle

Filament / Heater

Heater NotesAC or DC

Absolute Maximum Ratings

Plate Voltage8000 V
Grid 2 Voltage700 V
Grid 1 Voltage-180 V
H-C Voltage180 V

Audio Performance

Key Features
  • High-resolution electron gun
  • Small spot size
  • Improved spot shape
  • Long persistence
  • Depth of focus

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Standard Operation7000 V———0.2 mA

Application Notes

The 7BP7-B is a direct-view glass cathode-ray tube for oscilloscope and radar applications requiring long persistence. Anode voltage should not be less than 4000 volts for adequate brightness.

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