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Aluminum Electrolytic Capacitors

An aluminum electrolytic capacitor, or aluminum-electrolytic capacitor, is an electrolytic capacitor with an anode made of a pure aluminum foil with an etched surface. This type of capacitor has the highest energy density among electrolytic capacitors, making them the ideal choice when dealing with high current applications. The UCX1H681MNQ1ZD is an aluminum electrolytic capacitor that has a rated working voltage of 25V DC and a rated capacitance value of 680uF.

Application Field

The UCX1H681MNQ1ZD is a polarized capacitor, meaning that it must be mounted with the correct polarity orientation. This type of capacitor is often used in power supplies, motor drives, energy storage and audio equipment due to its low profile and high energy storage capability. Moreover, it is highly stable even in long-term applications as it features a low impedance and low ESR.

Being a low profile capacitor, it is also suitable for limited space applications such as mobile or handheld devices. It can also be used for other high current applications such as electric vehicles or solar power systems as it is energy efficient.

Working Principle

The UCX1H681MNQ1ZD is made up of two layers of aluminum foils separated by a layer of paper impregnated with electrolyte. The anode aluminum foil is etched which increases the surface area and thus increases the capacitance value of the capacitor. The electrolyte on the other side serves as the dielectric and provides insulation between the two layers.

When a voltage is applied on the capacitor, the electrons flow from the anode to the cathode. This generates an electric field across the dielectric which leads to the capacitance of the capacitor. The voltage applied will determine the amount of charge stored by the capacitor and its corresponding capacitance value.

In addition, the capacitor also features a low leakage current, which helps reduce power losses when dealing with high current applications. The majority of the leakage current occurs during the first few hours, after which it gradually decreases.

Conclusion

The UCX1H681MNQ1ZD is an aluminum electrolytic capacitor specifically designed to meet the requirements of high current applications. Its low profile and high energy density makes it an ideal choice for limited space or energy storage applications. Furthermore, its low leakage current and high capacitance values, as well as its high stability, makes it a reliable choice for long-term applications.

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