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

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E81CC vacuum tube outline illustration

Tube-number record

E81CC

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E81CC is a tube type in the TubeDatabase archive (class: Double Triode). Recorded specifications: brand Siemens, construction Dual triode, base Glass, socket Noval (B9A), maximum plate voltage 330 V, and maximum plate dissipation 2.8 W. The archive does not yet hold a photographed example of this type.

BrandSiemens
ClassDouble Triode
BaseNoval (B9A)
Filament6.3 V @ 300 mA

Construction

Primary TypeDual triode
EnvelopeGlass
Base MaterialGlass
Sections2

Filament / Heater

Heater NotesIndirectly heated; parallel or series supply.

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Amplifier250 V5500109006010 mA

Application Notes

Particularly suitable for HF and AF amplifiers, mixers up to 300 MHz, oscillators, and pulse stages with long anode-current-free periods.

Datasheets

Datasheet: E81CC.pdf

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

Filters

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Manufacturers

Brands

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    Plate Voltage330 V
    Plate Dissipation2.8 W
    Grid 1 Voltage-55 V
    Cathode Current18 mA
    H-C Voltage90 V

    Audio Performance

    Typical THD5%
    Key Features
    • Long life
    • High reliability
    • Shock and vibration resistant
    • Interface-layer free cathode