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

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E84L vacuum tube outline illustration

Tube-number record

E84L

0 archive entries

E84L is a tube type in the TubeDatabase archive (class: Power Pentode). Recorded specifications: brand Siemens, construction Pentode, socket Noval (B9A), maximum plate voltage 450 V, and maximum plate dissipation 13.5 W. The archive does not yet hold a photographed example of this type.

BrandSiemens
ClassPower Pentode
BaseNoval (B9A)
Filament6.3 V @ 760 mA

Construction

Primary TypePentode
EnvelopeGlass
SectionsSingle

Filament / Heater

Heater NotesIndirect, AC or DC, Parallel supply

Absolute Maximum Ratings

Plate Voltage450 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Pentode250 V11300400001948 mA
Pentode Low Current250 V10400400001936 mA
Triode Connected250 V10200180018.534 mA

Application Notes

High transconductance power pentode suitable for audio and wideband amplifiers in single-ended or push-pull configurations, cathode followers, and series regulator tubes.

Datasheets

Datasheet: E84L.pdf

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

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    Plate Dissipation13.5 W
    Grid 2 Voltage450 V
    Grid 1 Voltage-100 V
    Cathode Current75 mA
    H-C Voltage100 V

    Audio Performance

    Typical THD10%
    Power Output6 W
    Key Features
    • Long service life
    • Shock and vibration resistance
    • Reliability
    • Special cathode free of intermediate layers
    • Heater-filament switching stability