ESK476M035AC3AA

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Aluminum electrolytic capacitors are the most widely used type of capacitors. They are used in a wide variety of applications due to their relatively large capacitance and relatively low cost. They are typically used as energy storage or decoupling capacitors and are particularly important in providing power supply filtering and noise reduction.

The ESK476M035AC3AA is an example of an aluminum electrolytic capacitor. The “ESK” in the part number indicates that the capacitor is an electrolytic-surface-mount type, meaning that it is designed to be soldered directly to a printed circuit board. The “476” indicates the capacitor’s size; in this case, it is 4.76mm wide and 2.35mm tall. The “AC” indicates that the capacitor has an extended temperature range, meaning that it is able to operate over a wide temperature range. The “3” indicates that the capacitor has a capacitance tolerance of ±20%, and the “AA” indicates that the capacitor has an operating temperature range of -40° to +85° C.

The primary application of the ESK476M035AC3AA aluminum electrolytic capacitor is to store energy and/or provide decoupling. Its relatively high capacitance allows it to be used in a wide range of applications, including motor control, switch-mode power supplies, and data lines. Since it is an extended temperature range capacitor, it is also suitable for applications that require it to operate in an extreme temperature range.

The working principle of the ESK476M035AC3AA is based on the same principle as all electrolytic capacitors; the electrolyte solution between the capacitor plates consists of a mixture of a solvent, an ionic salt, and a small amount of gas. When voltage is applied to the capacitor, current flows through the electrolyte solution, which ionizes the salt, producing positive and negative ions. The positive ions move to the negative plate, and the negative ions move to the positive plate, creating a charge difference between them. The (dielectric) insulating solution between the plates prevents the two from combining and passing electrical current, resulting in a storage of charge. When the voltage is removed, the ions combine again and the charge is dissipated.

In summary, the ESK476M035AC3AA is an aluminum electrolytic capacitor designed for applications requiring a larger capacitance and an extended temperature range. Its primary use is for energy storage and decoupling, but it can be used in a wide range of other applications. It operates on the same principle as all electrolytic capacitors, using an electrolyte solution between the capacitor plates to store and release charge.

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