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What is a Capacitor?

A capacitor is a passive electrical component with two terminals which is used in order to store energy in an electric field. Capacitors contain at least two electrical conductors which are separated by a dielectric. When there is a voltage difference across the conductors, a static electric field develops across the dielectric, thus causing negative charge to collect on one plate and positive charge on the other. Energy is accumulated in the electrostatic field. Capacitance, measured in farads, is the ratio of the electric charge on each conductor to the voltage difference between them.

Types of Capacitors

There are several different kinds of capacitors at Future Electronics. We stock many of the most common types categorized by several parameters including capacitance, rated voltage, operating temperature range, case size / dimension, packaging type and several other attributes specific to each type of capacitor. Our parametric filters will allow you to refine your search results according to the required specifications.

Capacitors from Future Electronics

Future Electronics has a wide range of capacitors from several manufacturers. Once you decide if you need Aluminum Electrolytic Capacitors, Aluminum Organic Polymer Capacitors, Ceramic Capacitors, Film Capacitors, Mica Capacitors, Niobium Oxide Capacitors, Super Caps or Tantalum Capacitors, you will be able to choose from their technical attributes and your search results will be narrowed to match your specific capacitor application needs.

We deal with several manufacturers such as AVX, Cornell Dubilier, Illinois Capacitor, Murata, Nichicon, Samsung, NIC Components, Vishay and Yageo America Corporation, among others. You can easily refine your capacitor product search results by clicking your preferred capacitor brand from the list of manufacturers below.

Applications for Capacitors:

Capacitors have several uses in electrical and electronic systems. They are so widely used that it is rare that an electrical product does not contain some type of capacitor. A capacitor can store electric energy when it is disconnected from its charging circuit, so it can therefore be used like a temporary battery. They are often used in electronic devices in order to maintain a power supply while batteries are being changed thus preventing loss of information in volatile memory applications. In car audio systems, large capacitors are used to store energy for the amplifier to use when required. An uninterruptible power supply may be equipped with maintenance-free capacitors in order to extend its service life.

Choosing the Right Capacitor:

With the FutureElectronics.com parametric search, when looking for the right capacitors, you can filter the results by category. We carry the following categories of capacitors:

  • Aluminum Electrolytic Capacitors
  • Aluminum Organic Polymer Capacitors
  • Ceramic Capacitors
  • Film Capacitors
  • Mica Capacitors
  • Niobium Oxide Capacitors
  • Super Caps
  • Tantalum Capacitors

Once you choose the capacitor category, you can narrow them down by various attributes: by capacitance, operating temperature range, rated voltage and case size / dimension, to name a few. You will be able to find the right Aluminum Organic Polymer Capacitors, Ceramic Capacitors, Aluminum Electrolytic Capacitors, Mica Capacitors, Film Capacitors, Niobium Oxide Capacitors, Tantalum Capacitors or Super Caps by using these filters.

Capacitors in Production Ready Packaging or R&D Quantities

If the quantity of capacitors you require is less than a full reel, we offer to our customers several of our capacitors in tray, tube or individual quantities that will help you avoid unneeded surplus.

Future Electronics also offers its clients a unique bonded inventory program designed to eliminate potential problems that may arise from an unpredictable supply of products that could contain raw metals and products with erratic or long lead times. Talk with your nearest Future Electronics branch and find out more on how you and your company can avoid possible shortages.







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