Tube-number record
3CX20,000H3
0 archive entries
3CX20,000H3 is a tube type in the TubeDatabase archive (class: Industrial Power Triode). Recorded specifications: brand EIMAC (Division of Varian), year 1971, construction Triode, base Flexible filament leads, socket Flexible / flying leads, maximum plate voltage 12000 V, and maximum plate dissipation 20000 W. The archive does not yet hold a photographed example of this type.
BrandEIMAC (Division of Varian)
ClassIndustrial Power Triode
BaseFlexible / flying leads
Construction
Primary TypeTriode
EnvelopeCeramic/Metal
Base MaterialFlexible filament leads
SectionsSingle
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class C Telegraphy / Industrial Oscillator (Set 1) | 7500 V | — | — | — | 8000 mA |
| Class C Telegraphy / Industrial Oscillator (Set 2) | 10000 V | — | — | — | 7900 mA |
| Class C Telephony (Plate Modulated) | 6500 V | — | — | — |
Application Notes
Specifically designed for industrial heating equipment (30 KHz to 90 MHz) and AM broadcast modulator or linear amplifier service. Features flexible filament leads for direct mounting without a socket.
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