381LR181M420A012

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Aluminum electrolytic capacitors are components used in electrical circuits to store electrical energy. They are often used in power supplies, signal processing, electronic filters, and voltage regulation. The 381LR181M420A012 is one such component, and its application field and working principle can be examined in this article.

The 381LR181M420A012 is a surface-mount aluminum electrolytic capacitor. It has an operating temperature range of -55℃-125℃, a capacitance of 0.47uF (470000Pf) and a maximum voltage rating of 25V. The capacitor has a tolerance of ±20%, and a ripple current rating of 2.8 RMS. It is an example of a polarized capacitor, meaning that the can be only one orientation that the capacitor can be soldered to the board. The terminals of the capacitor lead to two plates, of which one is made out of aluminum and the other one out of conductive plastic. This di-electric layer combined with the electrolyte gives the 381LR181M420A012 a high capacitance.

The 381LR181M420A012 is primarily used for noise suppression and frequency tuning applications. It is often used as a bypass capacitor for decoupling noise, as it reduces the amount of circuitry noise that can pass through. The capacitor can be found in power supplies, power conditioning systems, radios, and other circuitry where noise suppression is important. In addition, the capacitor is used in PFC circuit designs, for high frequency applications, and for other general electrical purposes.

The working principle behind the 381LR181M420A012 is based on Faraday’s law, which states that a changing magnetic field galvanizes electricity. This is the same principle that is used in many other types of capacitors. The 381LR181M420A012 consists of two aluminum plates which are separated by a dielectric. The aluminum plates are charged with a current and the dielectric material between the plates stores it as electrical energy. When the voltage is increased, the dielectric between the plates expands and stores the resulting energy. When the voltage is decreased, the dielectric contracts and dissipates the stored energy. This process can be repeated, allowing for the capacitor to store and release energy multiple times.

In conclusion, the 381LR181M420A012 is an aluminum electrolytic capacitor used for noise suppression and frequency tuning. It has an operating temperature range of -55℃ to 125℃, a capacitance of 0.47uF, and a maximum voltage rating of 25V. Its working principle is based on Faraday’s law – a changing magnetic field galvanizes electricity which is stored and released in a repeating fashion. Overall, the 381LR181M420A012 is a useful component for electronic engineers who require a reliable and efficient capacitor for their circuits.

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