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

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DAF91 vacuum tube outline illustration

Tube-number record

DAF91

0 archive entries

DAF91 is a tube type in the TubeDatabase archive (class: Diode-Pentode). Recorded specifications: brand Mazda Belvu, construction Multi-section, base Glass, socket Miniature 7-pin (B7G), and maximum plate voltage 90 V. The archive does not yet hold a photographed example of this type.

BrandMazda Belvu
ClassDiode-Pentode
BaseMiniature 7-pin (B7G)

Construction

Primary TypeMulti-section
EnvelopeA 19-2
Base MaterialGlass
Sections2

Filament / Heater

MaterialDirect

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Pentode Section67.5 V625600000—1.6 mA

Datasheets

Datasheet: DAF91.pdf

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

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    Plate Voltage
    90 V
    Grid 2 Voltage90 V
    Cathode Current4.5 mA

    Audio Performance

    Key Features
    • Direct heating
    • Series or parallel filament supply
    • Detecteur - Préamplificateur A.F.