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

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EC70 vacuum tube outline illustration

Tube-number record

EC70

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EC70 is a tube type in the TubeDatabase archive (class: Subminiature U.H.F. Triode). Recorded specifications: construction Triode, socket Flexible / flying leads, maximum plate voltage 175 V, and maximum plate dissipation 3 W. The archive does not yet hold a photographed example of this type.

ClassSubminiature U.H.F. Triode
BaseFlexible / flying leads
Filament6.3 V @ 150 mA

Construction

Primary TypeTriode
EnvelopeGlass Subminiature
SectionsSingle

Filament / Heater

Heater NotesDirect heater

Absolute Maximum Ratings

Plate Voltage175 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Characteristics100 V550036002013 mA
Oscillator at 500 Mc/s175 V———20 mA

Application Notes

Valve may become very hot in operation and should be adequately cooled. A thermal clip to chassis is recommended to maintain bulb temperature around 100°C.

Datasheets

Datasheet: EC70.pdf

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

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    Plate Dissipation3 W
    Cathode Current22 mA
    H-C Voltage100 V

    Audio Performance

    Power Output0.75 W
    Key Features
    • Subminiature
    • U.H.F. Oscillator
    • Direct soldered connections