HVMLS213M010EA0D

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Aluminum Electrolytic Capacitors

One of the most commonly used types of capacitors available today is the aluminum electrolytic capacitor. They are typically identified with their device name or manufacturing part number, such as HVMLS213M010EA0D. They are used in electronics applications for a variety of reasons, including to help reduce noise, to filter out signals, and for their ability to be used as energy storage elements.

Application Field

Aluminum electrolytic capacitors are most commonly used in power supply systems, consumer electronics, medical equipment, communications infrastructure, and automotive electronics. In power supply systems, aluminum electrolytic capacitors provide filtering, ripple elimination, and energy storage, while also providing high efficiency and a low ESR (Equivalent Series Resistance). In consumer electronics, these components are used for power filtering, signal filtering, and energy storage. In medical equipment, these capacitors are used for noise and signal filtering. In communications infrastructure, aluminum electrolytic capacitors are used to filter and store energy. And, in automotive electronics, these capacitors are used for power filtering, energy storage, and ripple elimination.

Working Principle

Aluminum electrolytic capacitors are constructed with one or two aluminum foil electrodes covered with a porous material soaked in liquid electrolyte. The liquid electrolyte helps create an electric dipole field which causes the voltage to drop across the porous material, creating an electric current. This current then allows the capacitor to store electrical charge. The presence of the liquid electrolyte also allows the current to flow, creating an electrical resistence, which is why these capacitors are also known as polarized capacitors.

When an electrical field is applied between the electrodes and the liquid electrolyte, a reaction takes place which causes the electrode to form an oxides layer and the liquid electrolyte to form an insulating layer. This two layer structure gives the aluminum electrolytic capacitors their unique properties of high capacitance and low ESR. The higher the number of layers, the higher the capacitance and the lower the ESR.

In addition, the aluminum electrolytic capacitors also have an electrolyte temperature rating (for example, with the HVMLS213M010EA0D the temperature rating is 0°C to 70°C). This helps to ensure that the capacitor will not overheat and become damaged when in use.

Overall, aluminum electrolytic capacitors are a popular choice for many electronics applications due to their ability to provide filtering, ripple elimination, and energy storage. They are highly reliable components that can provide good performance in a variety of applications.

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