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Aluminum - Polymer Capacitors

Aluminum polymer capacitors, such as the RNU1E391MDN1PH, are a recent addition to the wide range of capacitor types now on the market. These compact, lightweight components combine the features of traditional capacitors and advanced materials to create efficient, reliable power supplies. In this article, we\'ll take a look at the application field and working principle of the RNU1E391MDN1PH.

Applications Field

Aluminium polymer capacitors like the RNU1E391MDN1PH are widely used in applications where standard electrolytic capacitors are inadequate. These capacitors are ideal for power applications, such as DC-DC converters and LED driver solutions, as well as for providing transient protection for high-frequency RF applications. Its wide temperature range (-40°C to 125°C) and low ESR makes it suitable for wide range of applications. Due to its unique chemical composition, aluminum polymer capacitors are also regularly used in automotive, avionics, and industrial electronic circuit designs. Its low profile and low ESR provide superior decoupling power and make it a great choice for automotive systems like anti-lock braking systems and air bags. The RNU1E391MDN1PH is also used in power supplies for notebooks, servers and telecommunications products, due to its low equivalent series resistance (ESR), low equivalent series inductance (ESL), and small size.

Working Principle

Aluminum polymer capacitors use an innovative design to maximize the effectiveness of the electrical charge stored within. At the heart of the RNU1E391MDN1PH is a nanofoam separator, which is a foamed film that is impregnated with a conductive polymer matrix. This separator is sandwiched between two aluminum foil electrodes and provides excellent insulation and low ESR.When a voltage is applied to the electrodes of the capacitor, ions move from the negative to the positive electrode, creating an electrical charge. This charge is stored in the form of electric potential energy within the sandwiched layers of the capacitor. The capacitor can then be rapidly discharged when required, enabling the capacitor to produce quick bursts of energy that are critical for applications such as motor drives, power management systems and power protection circuits.

Conclusion

Aluminum polymer capacitors, like the RNU1E391MDN1PH, are a relatively new type of capacitor offering reliable and efficient power supplies for a wide range of applications. These components are ideal for many power applications as well as for providing transient protection for high-frequency RF applications. They are also regularly used in automotive, avionics, and industrial electronic circuit designs. The capacitors work by using a nanofoam separator to store electrical charge and then rapidly discharge it when needed.

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