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

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Tube-number record

3BDP-

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BrandDu Mont
ClassCathode-Ray Tube
BaseCRT base (B12 family)
Filament6.3 V @ 600 mA

Construction

Primary TypeDisplay / CRT
EnvelopeGlass
Base MaterialPlastic
Sections1

Filament / Heater

Heater NotesHeater current 0.6 A at 6.3 V

Absolute Maximum Ratings

Plate Voltage2750 V
Plate Dissipation6 W
Grid 2 Voltage1100 V
Grid 1 Voltage-200 V
H-C Voltage125 V

Audio Performance

Key Features
  • 3 x 1 1/2-Inch rectangular face
  • Electrostatic deflection
  • Electrostatic focus
  • Rigid gun structure
  • Pressed faceplate

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Typical Operation (1000V Accelerator)1000 V————
Typical Operation (2000V Accelerator)2000 V————

Application Notes

Designed for small, light weight oscillograph applications. Replacement for the 3SP-.

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