What is a capacitor?
A capacitor is an electrical component used to store energy. There are numerous types of capacitors but all consist of conductors separated by a dielectric (insulator). The energy is stored in an electrostatic field when a potential difference across the conductors develops. This is caused from a positive charge collecting on one plate and a negative charge collecting on the other.
Since 1964 Custom Electronics has successfully designed and manufactured the highest quality custom reconstituted mica paper capacitors available. Our capacitors (>15,000 designs) are used in many of the most demanding applications imaginable. Historically, every one of our capacitor designs was tailor-made to meet a specific customer’s needs.
Our Mica Paper
At Custom, we use "Grade A" mica paper in our capacitors because it is an excellent dielectric. A dielectric is a material that does not conduct electricity, but one that can sustain an electric field in high-voltage capacitors. Mica paper consists of flexible, continuous and uniform layers of mica that are reconstituted or reformed into paper-like electrical insulating material composed of small, thin overlapping platelets. Custom's mica paper passes the most intensive series of quality checks in the industry. The result is high-voltage reconstituted mica paper capacitors that are used by leading high-tech companies for their space-age radar, missile, satellite, ignition, detonation, cryogenic, transmission, laser, medical and oil-and-gas exploration systems.
High Voltage / High Temperature Mica Capacitors
Designed to Best Fit Application
Variety of Packaging Options
Voltage Ratings: Up to 100kVdc
Capacitance Values: 10pf to 10µf
Temperature Range: -65°C up to 260°C
DC Pulse and AC Applications
Exploding Foil Initiators / Exploding Bridge Wire Capacitors
Custom Electronics is now your source for high quality metallized polypropylene capacitors for the Power Electronics industry. There is a wide range of values depending on the application and temperature ratings as high as 105°C.
Typical Capacitor Designs
Solar and Wind Power Inverters
Uninterruptible Power Supplies (UPS)
Standard products as well as customized designs are available with fast turn-around times.