35WA220MEFCT810X9

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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are electronics components with two electrical contacts connected to metallic layers separated by a non-conductive dielectric layer. The electrodes are made from aluminum foil with an oxide layer acting as insulation while electrolytic fluid provides the charge. This type of capacitor is used in power supplies, radio frequency interference filtering, and power factor correction.

35WA220MEFCT810X9

35WA220MEFCT810X9 is an aluminum electrolytic capacitor manufactured by the TDK Corporation. It is a radial leaded aluminum electrolytic capacitor rated at 220µF and 25V. Due to its low equivalent series resistance (ESR), it is well suited for use in DC-DC converter circuits. The capacitor also boasts high ripple current values, making it suitable for use in high-efficiency switching power supplies.

Application Field

The primary application for the 35WA220MEFCT810X9 aluminum electrolytic capacitor is in power supplies and DC-DC converter circuits. It is commonly used in high-efficiency switching power supplies and power factor correction circuits due to its low ESR and high ripple current values. Additionally, it can be used in filters for radio frequency interference and general circuit filtering.

Working Principle

The working principle of the 35WA220MEFCT810X9 aluminum electrolytic capacitor is similar to that of other electrolytic capacitors. It involves two thin sheets of aluminum foil separated by a layer of dielectric material, usually an oxide film. A liquid or solid electrolyte is used to store charge. The foil and the electrolyte are separated by a paper spacer, which isolates them from each other electrically. The foil and electrolyte form the two electrical contacts, the capacitance of which depends on the dielectric properties of the separating layer.

When a voltage is applied to the capacitor, the electric field between the two contacts attracts and accumulates negative charges, named ions, on the positive contact and positive charges, named electrons, on the negative contact. The built-in potential difference allows the electric charge to flow between the both terminals and results in a measurable capacitance. The 35WA220MEFCT810X9 aluminum electrolytic capacitor offers an ideal combination of low ESR and high ripple current values due to its low equivalent series resistance.

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