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

Pre (2,630 tube types), Other (2,603 tube types), Power (1,292 tube types), Rectifier (816 tube types)
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Tube-number record

7898

0 archive entries

7898 is a tube type in the TubeDatabase archive (class: High-Mu Twin Triode). Recorded specifications: brand RCA, year 1962, construction Triode, base Small-Button Noval, socket Noval (B9A), maximum plate voltage 330 V, and maximum plate dissipation 2.75 W. The archive does not yet hold a photographed example of this type.

BrandRCA
ClassHigh-Mu Twin Triode
BaseNoval (B9A)
Filament13.5 V @ 0.15 mA

Construction

Primary TypeTriode
EnvelopeT6-1/2
Base MaterialSmall-Button Noval
Sections2

Filament / Heater

Heater NotesHeater will withstand momentary excursions from 11.0 to 16.0 volts.

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class A1 Amplifier250 V5500110006010 mA

Filters

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Manufacturers

Brands

    0 results
    Plate Voltage330 V
    Plate Dissipation2.75 W
    Grid 1 Voltage-55 V
    H-C Voltage100 V

    Audio Performance

    Key Features
    • 9-Pin Miniature
    • Mobile-Communications Equipment
    • 6-Cell Storage-Battery Systems
    • High-Mu