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

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E 280 F vacuum tube outline illustration

Tube-number record

E 280 F

0 archive entries

E 280 F is a tube type in the TubeDatabase archive (class: Breitband-Pentode). Recorded specifications: brand Siemens, construction Pentode, socket Noval (B9A), maximum plate voltage 220 V, and maximum plate dissipation 4 W. The archive does not yet hold a photographed example of this type.

BrandSiemens
ClassBreitband-Pentode
BaseNoval (B9A)
Filament6.3 V @ 315 mA

Construction

Primary TypePentode
EnvelopeDIN 41539, Form A, Nenngröße 45
SectionsSingle

Filament / Heater

Heater NotesIndirekt durch Wechsel- oder Gleichstrom, Parallelspeisung

Absolute Maximum Ratings

Plate Voltage220 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Pentode Operation190 V260004000006020 mA
Triode Operation160 V3300018006024 mA

Application Notes

Particularly suitable for LF, IF and HF amplifiers in pre- and output stages, cathode followers, mixers, oscillators and frequency multipliers up to 300 MHz.

Datasheets

Datasheet: E280F.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 Dissipation4 W
    Grid 2 Voltage180 V
    Grid 1 Voltage-50 V
    Cathode Current30 mA
    H-C Voltage60 V

    Audio Performance

    Key Features
    • Long life (> 10,000 hours)
    • Reliability (p = 1.5 per 1000 hrs)
    • Tight tolerances
    • Shock and vibration resistance
    • Special cathode without interface layer
    • Heater-filament switching stability