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

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Tube-number record

6/30L2

0 archive entries

6/30L2 is a tube type in the TubeDatabase archive (class: Television Twin Triode). Recorded specifications: brand Mazda, construction Dual triode, socket Noval (B9A), maximum plate voltage 250 V, and maximum plate dissipation 2 W. The archive does not yet hold a photographed example of this type.

BrandMazda
ClassTelevision Twin Triode
BaseNoval (B9A)
Filament6.3 V @ 0.3 mA

Construction

Primary TypeDual triode
EnvelopeGlass
Sections2

Filament / Heater

Heater NotesIndirectly heated—for series or parallel operation

Absolute Maximum Ratings

Plate Voltage250 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Each section200 V3400—1810 mA

Application Notes

The permissible anode dissipation rating is dependent on the grid-cathode resistance, and the circuit employed. For the values quoted, the grid-cathode resistance should not exceed 0.25 megohms with cathode self bias.

Filters

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Manufacturers

Brands

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    Plate Dissipation2 W
    H-C Voltage150 V

    Audio Performance

    Key Features
    • General Purpose
    • Internal shield
    • Suitable for A.C./D.C. operation