UCYW6121MHD

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A common type of electronic device is the aluminum electrolytic capacitor. Aluminum electrolytic capacitors are capacitors that use aqueous electrolytes combined with aluminum foil to create an electrical field between a pair of plates. It is a type of capacitor that has high capacitance values per unit volume compared to other types of capacitors. They often have large capacitance values ranging from 0.1 to 3000 microfarads, with operating voltage ratings ranging from 6.3 to 630V. While they have excellent electrical parameters and are relatively inexpensive, there are disadvantages, such as a relatively short life expectancy due to anode corrosion, and they have a large equivalent series resistance (ESR) compared to film capacitors.

The model UCYW6121MHD is an aluminum electrolytic capacitor from the United Chemi-Con series. It is a radial-leaded, snap-in mounting capacitor with a rated voltage of 100V and a rated capacitance of 6,100µF. This capacitor is designed for use in general purpose applications such as power supplies, charge pumps, dc-dc converters, and line bypass capacitors and is often used for filtering and providing voltage-level stabilization in electronic circuits.

As for its working principle, the UCYW6121MHD is composed of two thin aluminum foils that are wound together, one of them being the anode and the other being the cathode. The the foils are separated by an aluminum oxide dielectric layer, and they are wound together with an electrolytic material. This electrolyte, when voltage is applied, increases the capacitance between the anode and cathode. The thinness of the aluminum foils is what enables it to have high capacitance values and low ESR yet remain inexpensive to produce.

The UCYW6121MHD aluminum electrolytic capacitor is suited for a variety of applications including filtering, signal coupling, bypassing, and energy storage. There are other aluminum electrolytic capacitors with different parameters such as higher capacitance, higher voltage ratings, and lower ESR. However, the UCYW6121MHD stands out among other aluminum electrolytic capacitors for its high capacitance and voltage ratings in a relatively small size.

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