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

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6HL8 vacuum tube outline illustration

Tube-number record

6HL8

0 archive entries

6HL8 is a tube type in the TubeDatabase archive (class: Triode-Pentode). Recorded specifications: brand Sylvania, construction Pentode, socket Noval (B9A), maximum plate voltage 330 V, and maximum plate dissipation 2.5 W. The archive does not yet hold a photographed example of this type.

BrandSylvania
ClassTriode-Pentode
BaseNoval (B9A)
Filament6.3 V @ 600 mA

Construction

Primary TypePentode
EnvelopeT-6 1/2
Sections2

Filament / Heater

Heater NotesHeater warm-up time 11 seconds

Absolute Maximum Ratings

Plate Voltage330 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Triode Section125 V700050004012.5 mA
Pentode Section125 V10000150000—12 mA

Application Notes

The triode is designed for sync separator, voltage amplifier or general purpose use. The pentode can be used as a video IF amp., AGC amp. and reactance tube.

Datasheets

Datasheet: 6HL8.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 Dissipation2.5 W
    Grid 2 Voltage330 V
    H-C Voltage200 V

    Audio Performance

    Key Features
    • Medium mu triode
    • High Gm pentode
    • Coated Unipotential Cathode