381LX331M315K032

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Aluminum electrolytic capacitors, commonly known as electrolytic capacitors, are a type of capacitor that utilizes a physical form of electrolyte on its plates which separates the positive plate from the negative plate, enabling the capacitor to store energy in the form of an electrostatic field. The most common type used today is the aluminum electrolytic capacitor, which is composed of aluminum foil hit by electric current through an electrolyte. The foil acts as the positive plate, while the electrolyte acts as the negative plate. The electrolyte is the key to the capacitor’s high energy storage density, allowing most electrolytic capacitors to store more energy than other capacitors.

The 381LX331M315K032 aluminum electrolytic capacitor is a popular model used for filtering and power supply applications. It features an 85°C maximum operating temperature and is rated for 125V DC. Its polarity must be correctly indicated (positive on the shorter catalytic leg, negative on the longer catalytic leg – refer to the product datasheet for further detail). The capacitor is composed of non-solid electrolyte and an anode foil placed in a cylindrical aluminum can and sealed with epoxy resin.

The 381LX331M315K032 capacitor can handle high-frequency signals and help condition power supply output. The capacitor can also be used for filtering and/or to decouple audio or power supply lines. The limitation of the capacitor is its narrow operating temperature range, so it is important to use it in an operating temperature range that meets application requires specified in the product datasheet.

The working principle of aluminum electrolytic capacitors is based on the basic physical principle of electrostatics, which states that electric charges of the same type will repel each other. In aluminum electrolytic capacitors, the two plates are both made of aluminum. A very thin dielectric layer is formed between the two plates, which is responsible for allowing electric current to flow between them. When a voltage is applied to the capacitor, a potential difference across the two plates is created, creating an electric field. This electric field attracts and repels electrons, creating an electrostatic field, which stores energy.

Aluminum electrolytic capacitors can be used in various electrical applications, including power supplies, high-frequency signals, and filtering. They can also be used for decoupling audio and power supply lines. While they are not generally the most cost-effective option, their high energy storage density makes them a valuable component for applications that require a controlled flow of current. For applications that require the temperature range of the capacitor to be greater than 85°C, it is important to select a model with a higher maximum operating temperature, such as the 381LX331M312K032 capacitor.

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