157XMPL6R3MG28

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Aluminum-Polymer Capacitors are a special type of capacitor used in a wide variety of electronic devices and equipment. One such capacitor is the 157XMPL6R3MG28. To understand its application field and working principle, some key components must be discussed.

Construction

The 157XMPL6R3MG28 consists of two aluminum foils that are rolled together and sandwiched between two sheets of a special polymer film. The polymer film acts as the dielectric which is responsible for storing the electrical energy in the capacitor. A liquid electrolyte is then poured into the assembly, providing a path for electrical current to be discharged and collected between the two aluminum foils, allowing the capacitor to work.

Capacitance and Voltage

The capacitance of a 157XMPL6R3MG28 capacitor is determined by the area of the aluminum foils and the thickness of the polymer dielectric. The voltage rating of the capacitor is determined by the breakdown voltage of the polymer film. Depending on the application, aluminum-polymer capacitors are available with voltage ratings ranging from 3V to 6V, and capacitance ranging from 0.26uF to 1000uF.

Applications

Aluminum-Polymer capacitors have a variety of applications, from decoupling and filtering, to pulse applications. The main advantage of this type of capacitor is that it can offer a very high capacitance in a small package. This makes it ideal for use in high density PCBs, where size and space are critical. 157XMPL6R3MG28 capacitors are especially useful in audio applications due to their high capacitance and low ESR.

Working Principle

When a voltage is applied to the capacitor, a current begins to flow in the liquid electrolyte. This current flows between the two aluminum foils, causing electrons to accumulate on the layers of polymer film, resulting in a stored electrical charge. When the current ceases, the capacitor displays the stored charge on its terminals. This stored charge can then be utilized in various applications.

Conclusion

The 157XMPL6R3MG28 Aluminum-Polymer Capacitor can offer a wide range of capacitance in a small package, making it ideal for many applications, particularly in audio devices. Its construction, composed of two aluminum foils, polymer dielectric, and liquid electrolyte, allows it to store and quickly deliver electrical charge within a given voltage range.

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