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

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Tube-number record

7B6

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BrandSylvania
ClassDUODIODE HIGH-MU TRIODE
BaseLoctal
Filament7 V @ 0.32 mA

Construction

Primary TypeTriode
EnvelopeT9
SectionsTriode, 2 Diodes

Filament / Heater

Heater NotesNominal ratings; Typical operation uses 6.3V

Absolute Maximum Ratings

Plate Voltage300 V
H-C Voltage90 V

Audio Performance

Key Features
  • Detector audio amplifier service
  • Common cathode structure
  • Independent diodes

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Triode Section100 V9001100001000.4 mA
Triode Section250 V1100910001000.9 mA

Application Notes

Suitable for detector audio amplifier service in AC or auto receivers. For AC-DC receivers, types 7C6 or 14B6 with lower heater current are recommended.

Datasheets

Datasheet: 7B6.pdf

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

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