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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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C30 vacuum tube outline illustration

Tube-number record

C30

0 archive entries

C30 is a tube type in the TubeDatabase archive (class: Pentode). Recorded specifications: brand Siemens, construction Pentode, socket Special / none, maximum plate voltage 300 V, and maximum plate dissipation 4 W. The archive does not yet hold a photographed example of this type.

BrandSiemens
ClassPentode
BaseSpecial / none
Filament6.3 V @ 400 mA

Construction

Primary TypePentode
EnvelopeGlass
SectionsSingle

Filament / Heater

Heater NotesIndirect heating; suitable for parallel or series supply.

Absolute Maximum Ratings

Plate Voltage300 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Pentode220 V65002500001916 mA
Triode (g2 and g3 to plate)220 V720025001818.5 mA

Application Notes

Universal pentode for wideband communication systems, suitable for LF, IF, and HF amplifiers in pre- and power stages, oscillators, mixers, and control amplifiers.

Filters

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Manufacturers

Brands

    0 results
    Plate Dissipation4 W
    Grid 2 Voltage300 V
    Cathode Current30 mA
    H-C Voltage120 V

    Audio Performance

    Typical THD10%
    Power Output1.5 W
    Key Features
    • Long life (> 10,000 hrs)
    • High reliability
    • Tight tolerances
    • Special cathode without interface layer