Vacuum capacitors for high voltage and high frequency applications offer long, maintenance-free service life and the ability to withstand transients that destroy other types of capacitors. Vacuum assures oxidation-free surfaces and a dielectric that is self-healing when subject to transient over-voltage conditions.
This series of fixed vacuum capacitors offers capacitances of 25 to 2,000 pF, withstanding working voltages at 50/60 Hz in the range of 4.5 to 33 kV. In addition to this working voltage, a value for AC test voltage is quoted in this series’ product specifications. The maximum operating current for vacuum capacitors is limited by temperature rise and working voltage. A current vs. frequency chart is provided for each capacitor.
If none of our standard catalog models meet your needs, our supplier`s engineers are happy to work with you to design a custom solution that meets your specific requirements.
Capacitance Tolerance: Fixed capacitors with a nominal capacitance above 50 pF shall be within ±5%. Capacitors with a nominal capacitance of 50 pF or less shall be within ±10%, or 0.5 pF, whichever is greater.
Testing Standards: All capacitors are factory tested for dielectric strength on a 100% basis prior to shipment, using a low current, high potential source at 60 Hz voltage. Upon customer request, certified test reports will be made available.
High Voltage Rating
High RF Current Ratings for normal convection cooling in ambient temperature of +25 °C (unless otherwise specified)
Maximum Allowable Temperature: +125 °C
High Altitude Operation
Mounting Position: Any
Typical Applications: Broadcast Radio Transmitters; Semiconductor Manufacturing Equipment; Plasma Generating Equipment; Industrial Dielectric Heating Equipment; Power Switching and Interrupting; Avionic and Mobile Radio Systems; Radar Antenna Switching; MRI and NMR; High Voltage Capacitor Banks