Tube-number record
3CX3000A7/3CX3000F7
0 archive entries
3CX3000A7/3CX3000F7 is a tube type in the TubeDatabase archive (class: Power Triode). Recorded specifications: brand EIMAC, year 1975, construction Triode, base Metal/Ceramic, socket Flexible / flying leads, maximum plate voltage 5000 V, and maximum plate dissipation 4000 W. The archive does not yet hold a photographed example of this type.
BrandEIMAC
ClassPower Triode
BaseFlexible / flying leads
Construction
Primary TypeTriode
EnvelopeCeramic/Metal
Base MaterialMetal/Ceramic
Sections1
Filament / Heater
MaterialThoriated-tungsten
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class AB2 Cathode Driven | 4800 V | — | 1425 | 160 | 2000 mA |
| Class AB2 Grid Driven | 4000 V | — | 1750 | 160 | 740 mA |
| Class C Telegraphy Cathode Driven | 4800 V | — | — | 160 |
Application Notes
The tube provides relatively high power output as an amplifier, oscillator, or modulator at low plate voltages. Grounded-grid operation provides a power gain of over 20 times.
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