RR71A221MDN1PH

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Aluminum-polymer capacitors, also called hybrid capacitors, are constructed of a mix of aluminum and polymer materials. They offer several advantages over conventional capacitors, including low equivalent series resistance (ESR), a wide temperature range, and low voltage derating at high temperatures. The RR71A221MDN1PH is one such capacitor, offering excellent capacitance stability and low ESR in an ultra-low-profile package. In this article, we explore the application fields and working principles of the RR71A221MDN1PH.

Structure and Composition

The RR71A221MDN1PH is a stacked assembly of aluminum foil and polymer separators forming an ultra-low-profile package with a height of just 0.43mm. It is constructed from an aluminum core, a thermally conductive separator, and an aluminum terminal connected to the aluminum core and terminal base. The RR71A221MDN1PH can have either a lead-free or a leaded terminal construction. Internally, the capacitors consist of metal foil and a polymer dielectric, separated by an insulation layer, which are deposited and rolled together in an anisotropic process to form the capacitance element. The metal foil retains its pre-rolling shape so that the capacitor exhibits uniform electrical characteristics in all directions.

Application Fields

The RR71A221MDN1PH is a high-performance device suitable for a variety of applications. Its low ESR reduces in-circuit inductance and improves high-frequency power delivery, making it suitable for demanding power-management circuits. Additionally, its low-profile construction makes it an ideal choice for space-constrained applications such as mobile phones, tablets, and personal computers. It is also suitable for automotive, industrial, and communications applications.

Working Principle

The RR71A221MDN1PH is an aluminum-polymer capacitor which works on the principle of an electric field generated between two conductors. When a charge is applied between the two conductors, the electrical field created results in a separator between the conductors. This separator, together with the aluminum-polymer material, form the dielectric, which in turn stores the electric energy produced by the field. When a voltage is applied across the conductors, the electrical energy is released, creating a current in the circuit. This current is then used to power various electrical devices.

Advantages

Aluminum-polymer capacitors provide several advantages over conventional capacitors. These include a low ESR, a wide temperature range, and a low voltage derating at high temperatures. Additionally, the low-profile construction of the RR71A221MDN1PH makes it suitable for use in space-constrained applications. Finally, the anisotropic process used to manufacture the capacitance element provides uniform electrical characteristics in all directions, resulting in improved reliability and performance.

Conclusion

The RR71A221MDN1PH is a high-performance aluminum-polymer capacitor suitable for a variety of applications. It offers several advantages over conventional capacitors, including low ESR, a wide temperature range, and low voltage derating at high temperatures. Additionally, its low-profile construction makes it a great choice for space-constrained applications. In conclusion, the RR71A221MDN1PH is an excellent capacitor for demanding power-management circuits.

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