ESMQ451VSN151MP35S

Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors take advantage of the unique properties of a thin oxide layer formed on an aluminum sheet. A small electric current passing through the sheet causes an oxide layer to form, essentially creating a dielectric for the capacitor. An electrolyte, typically an aqueous solution or organic solvent, is used to provide the ions necessary for an electrical charge to occur. Aluminum electrolytic capacitors generally have a higher voltage rating, capacity and a longer life than other types of capacitors like ceramic, film and paper.

ESMQ451VSN151MP35S application field and working principle

The ESMQ451VSN151MP35S is a surface mount aluminum electrolytic capacitor. As the name suggests, this type of capacitor is mounted directly on a printed circuit board. This type of capacitor is great for reducing the amount of space taken up by components on the board and it also ensures better protection from the environment. Furthermore, this capacitor is suitable for use in high frequency noise filtering applications that require high capacitance and high frequency ripple current.

These capacitors typically have a plastic or metal body, with a cathode connected to the positive lead and an anode connected to the negative lead. They use electrolytic capacitance, where the oxide formed on the aluminum sheet acts as the dielectric. This oxide layer prevents electrons from moving, thus creating a net electrical charge. When a voltage is applied, a current is created that moves around the circuit in the opposite direction, creating a charge on the capacitor itself. This allows the capacitor to store electrical energy.

ESMQ451VSN151MP35S capacitors have a low ESR (equivalent series resistance) value and a high ripple current, making them well-suited for applications that require high frequency electrical noise reduction. They are commonly used in switching power supply circuits, alarms, and systems with high peak current demands. Due to their low equivalent series resistance, these capacitors also provide a stable voltage output which is desirable in sensitive applications.