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

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6BF6 vacuum tube outline illustration

Tube-number record

6BF6

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6BF6 is a tube type in the TubeDatabase archive (class: Miniature Twin Diode - Medium Mu Triode). Recorded specifications: brand Sylvania, construction Triode, base Glass, socket Miniature 7-pin (B7G), maximum plate voltage 300 V, and maximum plate dissipation 2.5 W. The archive does not yet hold a photographed example of this type.

BrandSylvania
ClassMiniature Twin Diode - Medium Mu Triode
BaseMiniature 7-pin (B7G)
Filament6.3 V @ 300 mA

Construction

Primary TypeTriode
EnvelopeMiniature
Base MaterialGlass
Sections3 (Triode + 2 Diodes)

Filament / Heater

Heater NotesPeak Heater-Cathode Voltage: 90V Max

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class A Amplifier250 V19008500169.5 mA

Application Notes

Electrically, the Type 6BF6 is similar to the Type 6SR7.

Datasheets

Datasheet: 6BF6.pdf

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

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    Plate Voltage300 V
    Plate Dissipation2.5 W
    H-C Voltage90 V

    Audio Performance

    Typical THD6.5%
    Power Output0.3 W
    Key Features
    • Combined Detector
    • Amplifier
    • Automatic Volume Control