EKMH251VNN331MR25T

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Aluminum Electrolytic Capacitors - EKMH251VNN331MR25T application field and working principle

Aluminum Electrolytic Capacitors, also known as Al-electrolytic capacitors, have many advantages such as large capacitance, small volume, high reliability, and long life. They are widely used in a variety of fields including automobile, consumer electronics, communication instruments, and so on. Today, it is our focus to introduce the application field and working principle of a particular aluminum electrolytic capacitor - EKMH251VNN331MR25T.

Application Field

The EKMH251VNN331MR25T is a low profile, surface mount, aluminum electrolytic capacitor that is primarily used in power electronic circuits and switching power supplies. Thanks to a miniaturized EKMH series package, the capacitor lowers component count and thus decreases the height of the equipment, while also simplifying the installation. In addition, each capacitor has enhanced rated temperature and double-layer structure, rendering it suitable for high ripple currents and high power supplies.

Working Principle

Aluminum electrolytic capacitors are polarized capacitors whose anode is formed from a thin aluminum oxide film. This oxide layer acts as an insulator and allows the capacitor to hold a potential difference between its two halves. On the anode side of the component, a cathode, usually an aluminum foil, is installed. The cathode is then placed in a liquid electrolyte, typically a solution of boric acid and water. Under the effect of electric field, the ions in the liquid electrolyte are free to move and be collected on the anode, forming an electric double layer of charge. As a result, a capacitance is formed that is proportional to the area of the anode in the electric double layer.

Conclusion

EKMH251VNN331MR25T aluminum electrolytic capacitors are commonly used in low profile, surface mount applications such as electrical and switching power supplies. Its low profile package allows it to minimize the component count and reduces the height of the equipment. In addition, a double-layer structure and enhanced rated temperature makes it ideal for high ripple current and high power supplies.

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