B43858A5475M000

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Aluminum electrolytic capacitors, or electrochemical capacitors, are one of the most ubiquitous electronic components used in almost any application where electrical energy storage or transfer is needed. The B43858A5475M000 is the type number for an aluminum electrolytic capacitor produced by Amphenol, a major electronic component manufacturer. This application field and working principle will be covered in the following sections.

Application Field

The B43858A5475M000 has a broad range of uses due to its flexibility. Being an aluminum capacitor, it offers an extremely close capacitance tolerance value and a considerably higher capacity (47nF/50V). Its low equivalent series resistance (ESR) makes it suitable for use in high frequency or transient applications, where a fast response is necessary. Additionally, its dielectric has a very low leakage current, making it ideal for applications that require long term voltage regulation and energy storage. As a result, it is often employed in electrical circuits where varying loads and environmental changes cannot otherwise be controlled. As this capacitor is both temperature stable and long lived, it can also be used in industrial applications or in the aerospace industry.

Working Principle

The B43858A5475M000 utilizes a construction that allows for a higher operating temperature range. Its anodized aluminum chamber or canister is filled with electrolyte, a conductive liquid that permits electric current to flow. Sandwiched between its anodized aluminum canister and u-shaped aluminum foil is a combination of paper plates and separators. This arrangement forms a sandwich which works as a dielectric. The plates in aluminum foil plate form the positive side of the capacitor, while the canister works as the negative pole. When a voltage is applied, the electric current passes through the electrolyte, creating a charge at both the positive and negative poles of the capacitor. As the electric current passes through the electrolyte, electric charge builds up on the anodized aluminum canister. This results in an electric field, which acts as a barrier that is created between the positively charged plates and the negatively charged canister.

The magnitude of the electric field, also called the capacitance, is determined by the distance between the two plates and the surface area of the aluminum foil. Higher capacitance is achieved by increasing the size of the aluminum foil or by decreasing the distance between the two plates. The B43858A5475M000 maximizes the electric field by utilizing a large canister diameter and a high-tension electrolyte that resists degradation over time. This ensures that consistent performance is maintained over the entire range of operating temperatures.

Conclusion

The B43858A5475M000 is an aluminum electrolytic capacitor that is ideal for applications such as high frequency or transient signals, energy storage, and voltage regulation. Its close capacitance tolerance and sizeable capacitance allow for rapid response times. Furthermore, its low ESR ensures steady performance and its dielectric has a very low leakage current. This makes it a perfect choice for industrial applications or uses in the aerospace sector. Finally, its wide operating temperature range and long lifespan make it a reliable component for any job.

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