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Capacitors: High Voltage

  • Film Capacitors

    SeriesCapacitanceVoltageT° RangeToleranceDielectricNotes

    HT 72

    100pF to 4.7µF630V to 25000VComposite

    HT 77

    470pF to 0.33µF1000V to 5000VComposite
  • Mica Capacitors

    SeriesCapacitanceVoltageT° RangeToleranceDielectricNotes

    HP 86

    100pF to 2.2µF1500V to 20000VReconstituted Mica

    HT 78

    330pF to 1.5µF630V to 10000VReconstituted Mica

    HT 78 P

    330pF to 1.5µF630V to 10000VReconstituted Mica

    HT 86 P

    100pF to 2.2µF1500V to 20000VReconstituted Mica

    HT 96

    1000pF to 0.12µF3000V to 10000VReconstituted Mica

    HT 97

    100pF to 2.2µF1500V to 20000VReconstituted Mica

    HT 97 P

    100pF to 2.2µF1500V to 20000VReconstituted Mica
  • High Voltage Capacitors

    Dearborn Electronics, Inc., an Exxelia company has more than 25 years experience in providing high voltage capacitors to various industries. Several dielectrics, such as plastic; plastic + paper; reconstituted mica and ceramic are used for manufacturing high voltage capacitors. Many are impregnated with solid thermo-setting resins such as epoxy, polyester or silicone to prevent corona.

    This technology provides very high stability of mechanical and electrical characteristics with temperature capabilities of -55°C to as high as +200°C without voltage de-rating, using the appropriate dielectrics. Rated voltages range from 1kV to as high as 20kV with capacitance ranges spanning from 100pF to as high as 30µF with stored energy capability of 150 joules

  • High Voltage versus Traditional Capacitors

    Our high voltage capacitors are specifically designed to be able to withstand a larger amount of electrical charge than other types of capacitors can offer. They use two main mechanisms to store the energy that is being transmitted, which is contrary to the conventional dielectric method that is used with other types of capacitors. The first main method used to store electricity is called double layer capacitance, while the second is called pseudo capacitance. These methods are electrostatic and electrochemical in origin, respectively, which allows high voltage capacitors to combine the energy storing methods of normal capacitors with the methods used during the operation of a normal battery.

  • How do Capacitor Materials differ?

    High voltage capacitors can be made from a few different types of material. High voltage ceramics capacitors and metalized polyester film capacitors are just two of the main types. They are notable for a few different characteristics:

    Charge time – Even though different types of technology are at work with regards to the way high voltage types of capacitors operate, they still have both discharge and charge times that are very comparable to those of regular capacitors. These charge times are possible due to the low internal resistance in the materials at play.

    Specific power – Another main characteristic that sets these types of capacitors apart is specific power, which means that they have a specific power of up to ten times larger than regular batteries.

    Cycle life and safety – High voltage capacitors are much safer than traditional capacitors and batteries, even when they’re being mistreated. A traditional battery, for example, has been known to fully explode if it is short circuited, experiences excessive heat or is involved in other types of situations.

    Unlimited charging – High voltage capacitors can also be charged and discharged a virtually unlimited number of times. Traditional capacitors and batteries can only be charged around 500 times before they start to lose some of their original power.

    Because of these reasons, high voltage capacitors made from all types of materials are very useful during situations where energy needs to be stored and released on a frequent basis.

  • What are the Disadvantages of using High Voltage Capacitors?

    One of the only major downsides to high voltage capacitors has to do with specific energy. The term specific energy is used to quantify the total amount of energy that is stored in the device, while at the same time dividing that number by the overall weight of the device. High voltage capacitors have a comparatively low specific energy when compared to other types of applications.

  • Meeting the Needs of Clients from Coast to Coast

    If you need any additional information, check out the list of Dearborn Sales Representatives that are in operation across the country. You can also view the list of Dearborn Distributors to find out more information about the distributors who are operating nearest to your location. A list of International Sales Reps & Distributors is also available for those who don’t live in the United States.

    Please do not hesitate to contact us if you have any additional questions regarding our company or the products and services that we provide. Using your Web browser you can contact us in a number of different ways, including to request a quote, to send us a file or drawing or to submit an email for a prompt response. We look forward to hearing from you.