RF Feedthrough Capacitor

For the design and manufacture of RF feedthrough capacitors, we offer a wide choice of high quality materials backed by longstanding applications experience. We deliver high performance products in standard and bespoke designs to meet individual project needs.

The high quality CLASS 1 ceramic dielectric materials selected for our RF feedthrough capacitors feature low or medium permittivity, high Q factor (low loss), high dielectric breakdown strength, low magnetic susceptibility and good capacitance-temperature stability.

The range includes units with diameters from 28 to 55mm and lengths from 88 to 165mm. All our RF feedthroughs feature a central conductor that facilitates passage of the high RF current. This open tubular design makes full use of convection currents to offer high load power ratings in a relatively compact unit and the low loss ceramic and noble metal electrodes ensure low self-heating.

Our RF feedthrough capacitors are made using low self-inductance construction, which allows them to be used at higher frequencies. They have a good capacitance-temperature stability (very low NPO / COG) for minimal frequency drift and are proven robust for long operational life.

RF feedthrough capacitors are ideal for industrial and high power applications including:

  • Radio broadcast transmitters
  • Induction and dielectric heating equipment
  • HF filter, by-pass and coupling and oscillating circuits
  • High power matching tuned circuits
  • Antenna coupling circuits
  • Plasma generators
  • High quality medical imaging systems (MRI)

RF feedthrough capacitors are available in a wide range of capacitance-voltage combinations and ratings. Bespoke units can also be produced to customers’ specifications including custom metalwork connections and resin-coated options.

For more information on standard or bespoke RF feedthrough capacitors for your project please contact us today.