MAL213658479E3

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Aluminum electrolytic capacitors are essential components in a vast range of electronic products and are widely used in applications such as consumer electronics, industrial equipment, automotive electronics, telecommunications, and medical equipment. In particular, the MAL213658479E3 aluminum electrolytic capacitor is a popular choice for its high capacity, high voltage, and low leakage current. This article will explain the application field and working principle of the MAL213658479E3 aluminum electrolytic capacitor.

What is an Aluminum Electrolytic Capacitor?

An aluminum electrolytic capacitor is an electrical component composed of two or more sheets of aluminum separated by an electrolytic paper, which is soaked in electrolyte. It is designed to produce a capacitance level that is typically much higher than other capacitors of the same size. Aluminum electrolytic capacitors are especially useful in power supply circuits, where they can provide greater energy storage and smooth ripple. They are also widely used for signal filtering and decoupling.

Application Field of the MAL213658479E3 Aluminum Electrolytic Capacitor

The MAL213658479E3 aluminum electrolytic capacitor is a radial leaded type capacitor with non-solid electrolyte. It has a capacitance value of 4.7µF, an operating voltage of 25V, and a rated temperature up to 105℃. As such, it is well-suited for applications that require low-impedance filtering and power supply ripple suppression. It can also be used for filtering of high frequency signals. Furthermore, the capacitor features a low ESR value and a wide temperature range, making it suitable for applications that require a high level of reliability.

Working Principle of the MAL213658479E3 Aluminum Electrolytic Capacitor

The working principle of the MAL213658479E3 aluminum electrolytic capacitor is relatively simple. When DC voltage is applied across the capacitor, the electrical current passes through the electrolyte, resulting in a accumulation of positive charges on one aluminum electrode and negative charges on the other. In this way, a potential difference is created between the two electrodes. This phenomenon is known as electrostatic induction and is the basis of the capacitor’s working principle.

The MAL213658479E3 capacitor also has a dielectric layer, which serves to prevent current leakage from the capacitor. This layer also serves to increase the capacitance. The dielectric layer is composed of the electrolyte, which is usually a mixture of water, ethanol, and a hygroscopic salt such as ammonium borate. This salt helps to increase the surface area of the electrolyte, which increases the capacitance of the capacitor.

Finally, the capacitor is also designed with a vent hole, which allows the capacitor to vent gases as they are created during the charging and discharging process. Without the vent hole, pressure could build up within the capacitor, leading to potential failure of the device.

Conclusion

The MAL213658479E3 aluminum electrolytic capacitor is a popular choice for its high capacitance, high voltage, and low leakage current. It is suitable for applications such as low-impedance filtering, power supply ripple suppression, signal filtering, and decoupling. Its working principle is based on electrostatic induction, where electricity is used to create a potential difference between the two aluminum electrodes. The dielectric layer of the capacitor comprises of electrolyte, which helps to increase the surface area and thus, the capacitance of the capacitor. Finally, the vent hole of the capacitor helps to prevent pressure build up, which ensures reliable performance.

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