381LX183M025K452

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Aluminum electrolytic capacitors are electronic components typically constructed of metal or foil-metalized bi-polar capacitors. These components are used in a variety of fields, including power supplies, automotive electronics, and audio applications. The specific capacitor referred to as the 381LX183M025K452 is a surface-mount capacitor that meets the RoHS regulation from JIS. This type of capacitor is designed for use in high-temperature and low-humidity environments due to its low ESR and high reliability.

The aluminum electrolytic capacitor works on the principle of charge separation between two electrodes due to an electrolyte. The 381LX183M025K452 features a cathode (the negative electrode) that is composed of a metal layer on the outer surface. An electrolyte (such as EtOH, KOH) is then applied to the metal layer and acts as an ion-conducting medium. This electrolyte layer is surrounded by an anode (the positive electrode) which is composed of a foil and a metal layer for dielectric oxidation.

The electrolyte takes the negative ions (anions) from the outside and then distributes them over the cathode surface. At the same time, the positively charged ions (cations) from the anode are also distributed over the anode surface. This process creates an electric field between the two electrodes, resulting in charge separation by electrolytic action. Thus, the capacitor becomes charged and produces an electrical charge. The amount of charge produced by an aluminum electrolytic capacitor like the 381LX183M025K452 is determined by the capacitance of the capacitor.

As for application fields, the 381LX183M025K452 is most suitable for high-temperature and low-humidity environments due to its low ESR and high reliability. A few examples include automotive electronics, audio applications, and power supplies. The capacitor can also be used in pulse-type applications where high-grade noise suppression is required. In addition, it can be used to reduce switching noise and electrical noise and to prevent damages caused by electrical surges.

To conclude, the 381LX183M025K452 is an aluminum electrolytic capacitor that meets the RoHS regulation from JIS and is suitable for high-temperature and low-humidity environments. It is applied mainly in automotive electronics, audio applications, power supplies, and pulse-type applications requiring high-grade noise suppression. The working principle of the capacitor is based on the charge separation achieved by the electrolytic action between the two electrodes.

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