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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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3X100A5 vacuum tube outline illustration

Tube-number record

3X100A5

0 archive entries

3X100A5 is a tube type in the TubeDatabase archive (class: High-Mu Transmitting Triode). Recorded specifications: brand Eitel-McCullough, Inc. (Eimac), year 1958, construction Triode, base Metal, socket Coaxial, maximum plate voltage 1000 V, and maximum plate dissipation 100 W. The archive does not yet hold a photographed example of this type.

BrandEitel-McCullough, Inc. (Eimac)
ClassHigh-Mu Transmitting Triode
BaseCoaxial
Filament6.3 V @ 1025 mA

Construction

Primary TypeTriode
EnvelopePlanar Metal-to-Glass
Base MaterialMetal
Sections1

Filament / Heater

MaterialOxide-Coated
Warm-up Time60s

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
RF Power Amplifier (500 Mc)600 V25000—10080 mA
RF Oscillator (2500 Mc)900 V———90 mA
Plate-Modulated RF Amplifier (500 Mc)600 V———

Application Notes

Physically and electrically identical to the Eimac 2C39A but with additional production tests for long-pulse cathode evaluation.

Filters

0 tubes found

Manufacturers

Brands

    0 results
    Heater Notes
    Heater voltage depends on frequency; varies from 6.3V (up to 400 Mc) down to 4.5V (2000 Mc and above).

    Absolute Maximum Ratings

    Plate Voltage1000 V
    Plate Dissipation100 W
    Grid 1 Voltage-400 V
    Cathode Current125 mA

    Audio Performance

    Key Features
    • Planar construction
    • VHF/UHF range
    • Forced air cooling
    • High-mu
    65 mA