MAL211890004E3

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Aluminum Electrolytic Capacitors are a type of solid-state electrical capacitor that utilizes a thin oxide layer on top of an aluminum foil or a combination of aluminum foils for an anode material. The technology used for this type of capacitor has been around since the 1920s, and while modern aluminum electrolytic capacitors are relatively efficient and reliable, they remain the least expensive form of capacitor. MAL211890004E3 is one of the most commonly used aluminum electrolytic capacitors in modern applications.

The MAL211890004E3 is a high voltage, low profile, high ripple current aluminum electrolytic capacitor with a rated capacitance valued at 85,000 μF. Its rated voltage is 250V and is available in either radial leaded or snap-in version. This type of capacitor is typically used in applications where extra bulkiness and space requirements pose an obstacle.

The working principle of aluminum electrolytic capacitors can be explained through a simplified version of the traditional Helmholtz double layer capacitor model. In this model, the charge carriers which are responsible for the capacitors operation are based upon the ionic dissolution of the electrolyte material in the capacitor’s dielectric layer.

The positive charge carriers, which are typically H+ ions or Na+ ions, are drawn from the electrolyte solution towards the nearest surface of the capacitor, in this case the aluminum foil anode. At the point of contact, the aluminum oxide is used to create the double layer, resulting in an electric field between the two layers. The electrons generated from this field create a flow of electric current in the circuit, as the ions transfer their charge.

The size of the electric field between the anode and the Cathode dictates how much charge the capacitor can store. As the value of capacitance increases, the thickness of the oxide film increases, resulting in higher electric field strength. The MAL1890004E3 has a high electric field strength, which results in its rated capacitance of 85,000 μF.

The major applications of the MAL1890004E3 include DC-DC converters and inverters for solar panel charging, lighting power supplies, uninterruptible power supplies, and UPS. These devices use high ripple currents, which allow for quick energy transfers, with minimal energy losses. The MAL1890004E3 has a low electrolytic temperature coefficient and low ESR, thus making it ideal for these applications.

In conclusion, MAL211890004E3 is an aluminum electrolytic capacitor that has a rated capacitance of 85,000 μF and is rated at 250V. It is typically used in applications that involve high ripple current in order to provide fast energy transfers with minimal energy losses. The working principle of aluminum electrolytic capacitors is based upon the Helmholtz double layer capacitor model, where the charge carriers are ions and the electric field between the anode and cathode dictates the capacitance of the capacitor.

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