EKXL421ELL680MM20S

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Aluminum Electrolytic Capacitors are widely used in electronic applications due to their high capacitance, low leakage current and low ESR. The EKXL421ELL680MM20S is an Aluminum Electrolytic Capacitor specifically designed for switching power supplies. In this article, we will explore the application field and working principle of this device.

Application Field

The EKXL421ELL680MM20S Capacitor is primarily used to filter out high frequency noise in switching power supplies, as well as for timing, holding and smoothing output voltage. The device also has a high-temperature resistant operation up to 125°C, making it ideal for use in harsh environment applications. On top of that, the EKXL421ELL680MM20S can handle high ripple currents up to 85A and has a low ESR and ESL, allowing it to function as an effective energy storage device.

Working Principle

An Aluminum Electrolytic Capacitor works by storing energy through an electrolyte, which is a specially formulated chemical solution that conducts electrical charges. When voltage is applied, the positive charge of the electrolyte pushes the electrons to the aluminum housing, forming a highly conductive electric field. The combined conductive aluminium and electrolyte material allows high capacitance to be achieved, meaning the capacitor can store more energy for a specific amount of volume.

As current is drawn from the capacitor, the electrolyte slowly consumes electrons and the stored energy diminishes accordingly. In order to maintain optimal performance, it is important to keep the electrolyte pressure in the capacitor within a certain range since the electrolyte’s ability to store energy depends on it. Finally, the EKXL421ELL680MM20S Capacitor was designed to have a long shelf life, a wide operating temperature range and high temperature resistance, making it suitable for a variety of applications.

Conclusion

The EKXL421ELL680MM20S is a highly reliable Aluminum Electrolytic Capacitor. Its combination of high capacitance, reduced ESR and low leakage current enable it to efficiently filter out high-frequency noise in switching powers supplies, as well as to provide timing, holding and smoothing output voltage. On top of that, the device has a wide operating temperature range and high temperature resistance, making it ideal for use in harsh environment applications.

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