4CX1000A/8168 Tubes For Sale: 4CX1000A Tube Specs, Data Sheet & Substitute Info
4CX1000A tubes for sale
Single or multiple 8168/4CX1000A tubes for sale: Available quantities:
If you are looking for a 4CX1000A tube for sale, we can help you confirm whether 8168/4CX1000A is the correct match for your amplifier or system. A 4CX1000A replacement is typically selected by confirming the tube marking and ensuring the installation requirements line up with your existing setup.
4CX1000A tube specs
Below is a general 4CX1000A tube specs reference table for quick comparison and pre-order checks. This model is part of the tetrode vacuum tube family, so the most important “fit” variables typically include socket/base style, cooling/airflow path, and how the tube is driven in your specific amplifier or generator.
| Specification | Details |
|---|---|
| Tube type | Ceramic/metal radial-beam power tetrode (4CX1000A / 8168) |
| Plate (anode) dissipation (max) | 1,000 W |
| Screen dissipation (max) | 12 W |
| Control grid dissipation (max) | 0 W |
| Frequency for max rated power (CW) | 110 MHz |
| Amplification factor (Mu) | N/A (see data sheet) |
| Filament/cathode type | Oxide coated, unipotential |
| Filament voltage | 6.0 V |
| Filament current | 9.0 A |
| Interelectrode capacitance (grounded cathode): input | 81.0 pF |
| Interelectrode capacitance (grounded cathode): output | 11.8 pF |
| Interelectrode capacitance (grounded cathode): feedthrough | 0.01 pF |
| Interelectrode capacitance (grounded grid): input | 35.5 pF |
| Interelectrode capacitance (grounded grid): output | 12.0 pF |
| Interelectrode capacitance (grounded grid): feedthrough | 0.00 pF |
| Cooling method | Forced air |
| Base type | Special, breechblock terminal surfaces |
| Recommended air socket | SK-800 series (commonly SK-800B) |
| Recommended air chimney | SK-806 series |
| Overall length | 4.80 in (122 mm) |
| Overall diameter | 3.37 in (85.5 mm) |
| Weight | 27 oz (768 g) |
| Operating position | Any |
4CX1000A tube data sheet download
Use the data sheet as your final reference for ratings, cooling expectations, and mechanical details before ordering. If the data sheet file is not unique to Pentalabs, it should be allowed to be crawled but set to noindex (not disallowed) so it remains accessible to users without competing in search results.
4CX1000A tube substitute & equivalent information
This tube is commonly sourced for RF power amplification service where the surrounding hardware is designed around the same socket and cooling approach. When comparing interchange options, confirm the mechanical interface first (socket/base, chimney/ducting, clearances), then validate operating conditions (typical drive level, duty cycle, and how hard the tube is run in practice).
In many installations, this can serve as an Eimac 4CX1000A tube equivalent and may be used as a direct replacement for 4CX1000A Eimac tubes when the system requirements match. If you are replacing a legacy brand-marked tube, always compare the full installation context rather than relying on the model number alone.
As a trusted vacuum tube manufacturer, we can help with compatibility confirmation if you share your existing tube marking plus your amplifier/generator model and cooling setup. If your project is more audio-focused, you may also want to browse related audio tubes for sale for other amplification designs.
For RF transmit applications, 4CX1000A is a tube ham radio enthusiasts might need for a high-power 4CX1000A amplifier build or an existing amplifier that is designed around this tube family.
Be the First to Know. Sign up to newsletter today.