What Is a Radial Type Super Capacitor?

WEET WUD Radial Type Super Capacitor is an electric double-layer capacitor with radial lead terminals, designed for easy PCB mounting and reliable energy storage.

WUD Radial Super Capacitor Construction and Working Principle

A radial super capacitor mainly consists of activated carbon electrodes, electrolyte, separator, and radial lead terminals.

Electric Double Layer

Unlike batteries that store energy through chemical reactions, super capacitors store energy through the electric double layer formed between the electrode and electrolyte interface.

This physical energy storage method enables faster charging speed and longer operating life.

Separator

The separator prevents direct contact between the positive and negative electrodes while allowing ions to move through, ensuring safe and stable operation.

Why Choose WEET WUD Radial Type Super Capacitor?

Long Cycle Life

Radial super capacitors can achieve millions of charge and discharge cycles, significantly reducing replacement frequency compared with batteries.

Fast Charging and Discharging

With low ESR characteristics, they can quickly absorb and release energy, making them suitable for high-power applications.

High Power Density

They can provide instant power support for systems requiring short-term energy supply.

Maintenance-Free Operation

The long service life and stable performance make radial super capacitors a reliable energy storage solution.

Applications of WEET WUD Radial Type Super Capacitor

Super Capacitor for Backup Power

One of the key applications of radial super capacitors is backup power.

A Super Capacitor for Backup Power can provide temporary energy support for:

• RTC backup 

• Memory backup 

• Industrial controllers 

• Emergency power systems 

Energy Harvesting Systems

Radial super capacitors are suitable for storing energy collected from renewable and low-power sources, such as:

• Solar energy systems 

• Wireless sensor nodes 

Automotive and Industrial Applications

Due to their high reliability and long cycle life, radial super capacitors are used in:

• Start-stop systems 

• PLC systems 

• Automation equipment 

• Electronic control systems

How to Select a Radial Type Super Capacitor?

When selecting a super capacitor solution, it is also important to understand the differences between single-cell and dual-cell designs. 

For more details, please refer to our article: WUD Single Cell VS WUB Dual Cell Super Capacitor: Which One Should You Choose?

Capacitance

Common capacitance ranges include 0.1F to 100F. Higher capacitance provides greater energy storage capacity.

Rated Voltage

Common voltage ratings include: 2.5V~3.8V

Operating Temperature

Typical operating temperature ranges:

• -20℃ to +65℃ 

• -20℃ to +85℃ (3.5V)

Conclusion

WEET WUD Radial Type Super Capacitor combines high power density, fast charging capability, and long cycle life, making it an ideal solution for modern electronic applications.

From backup power systems to industrial equipment and automotive electronics, radial super capacitors provide reliable and efficient energy storage performance.

WEE Technology Company Limited Published On Aug 14, 2026