Supercapacitors

Supercapacitors & Ultracapacitors are in stock with same-day shipping at Mouser from industry leading manufacturers. Mouser is an authorized distributor for many supercapacitor manufacturers including Abracon, Cornell Dubilier, Eaton, KEMET, KYOCERA AVX, Maxwell, Vishay, & more. 

Supercapacitors are high-capacitance energy storage devices designed to store and deliver electrical energy rapidly through electrostatic charge accumulation rather than traditional chemical reactions. They provide extremely fast charging and discharging capabilities, long operational lifetimes, and high power density, making them well suited for applications requiring short-term energy delivery and backup power support. These components help improve system efficiency, bridge power interruptions, and supplement batteries in demanding electronic and industrial designs.

Types: The most common supercapacitor types include electric double-layer capacitors (EDLCs), pseudocapacitors, hybrid supercapacitors, coin-type supercapacitors, radial supercapacitors, and module-based supercapacitors, each tailored for specific energy storage, power delivery, and lifecycle requirements.

Applications: Supercapacitors are widely used in industrial automation equipment, smart utility meters, backup power systems, energy harvesting devices, transportation systems, renewable energy installations, memory protection circuits, and applications requiring rapid charge and discharge cycles.

Selection requirements: To choose supercapacitors, evaluate capacitance value, rated voltage, energy density, power density, equivalent series resistance (ESR), operating temperature range, lifecycle performance, package type, and suitability for the intended electrical and environmental conditions.

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Please view our large selection of supercapacitors below.