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

Other (3,257 tube types), Pre (2,314 tube types), Power (1,030 tube types), Rectifier (740 tube types)
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Tube-number record

3BFP

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BrandAllen B. Du Mont Laboratories, Inc.
ClassCathode-Ray Tube
BaseCRT base (B12 family)
Filament6.3 V @ 600 mA

Construction

Primary TypeDisplay / CRT
Envelope3-inch Flat Face Glass
SectionsSingle

Filament / Heater

Absolute Maximum Ratings

Plate Voltage3500 V
Plate Dissipation6 W
Grid 2 Voltage1250 V
Grid 1 Voltage-200 V
H-C Voltage180 V

Audio Performance

Key Features
  • Linear post accelerator
  • Flat face
  • High deflection sensitivity
  • Compact transistorized equipment compatibility

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Typical Operation1500 V————

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