
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
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| RF Power Amplifier (500 Mc) | 600 V | 25000 | — | 100 | 80 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.
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