What are Supercapacitors?

Supercapacitors are energy storage components that bridge the gap between conventional capacitors and rechargeable batteries by providing high capacitance with rapid charge and discharge capability. They store energy through electrostatic mechanisms rather than chemical reactions, enabling high cycle life and fast power delivery.

Supercapacitors are used to support peak power demands, energy buffering, and power stabilization. Their electrical behavior is defined by parameters such as capacitance, voltage capability, and internal resistance, all of which directly influence performance, efficiency, and integration within power electronic systems.

Key Specifications

• Types of Capacitor: Identifies the construction and internal technology of the supercapacitor. This parameter determines fundamental characteristics such as energy storage mechanism, voltage handling approach, and suitability for specific operating conditions.
• Capacitance: Represents the amount of electrical charge the supercapacitor can store per unit voltage. This directly impacts available energy storage and defines how long the device can support a given load.
• Voltage Rating: Specifies the maximum continuous voltage the supercapacitor can withstand without degradation. This parameter is critical for safe operation and determines how devices can be combined in series for higher-voltage applications.
• Equivalent Series Resistance: Describes the internal resistive losses within the supercapacitor. Lower resistance improves power delivery efficiency, reduces internal heating, and enhances transient response.

The Largest Database of Supercapacitors

everything PE has listed Supercapacitors from the leading manufacturers and made them searchable by specification. You can enter the key parameters and the search tool will scan catalogs from the leading manufacturers to identify products that meet your spec. Once you find Supercapacitors that meet your requirements, you can view product information, download datasheets or request quotations. Quotation requests will be routed to the manufacturer of the product, who will get back to you directly. The quotation will also be routed to distributors of the product in your region.