ESMR421VSN471MA30S

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Aluminum electrolytic capacitors have a wide range of applications in various fields. They are widely used in computers, audio amplifiers, power supplies, and power amplifiers, among many other applications. This article will examine the specific application field and working principle of ESMR421VSN471MA30S aluminum electrolytic capacitors in detail.

ESMR421VSN471MA30S aluminum electrolytic capacitors are designed for use in high-current and high-temperature general-purpose applications. These capacitors feature a long-life design and are capable of withstanding up to 105°C. ESMR421VSN471MA30S capacitors are well-suited for use in automotive systems, automotive electronics, and industrial control and power systems. The capacitance of these capacitors ranges from 0.22 µF to 4.7 µF, and they have an ESR (Equivalent Series Resistance) of 21 mΩ, and a maximum DC voltage of 63 V.

An aluminum electrolytic capacitor consists of two aluminum foils, which are separated by a paper spacer impregnated with an electrolyte. The aluminum foils act as capacitor plates, while the impregnated paper spacers act as a dielectric layer. The aluminum foils are also coated with an organic lacquer. To ensure proper electrical contact between the foils, they are wrapped with a metal-film or metal-foil electrode.

The working principle of aluminum electrolytic capacitors is based on the fact that aluminum, when exposed to an electrolyte, forms an oxide layer on its surface. This oxide layer acts as the dielectric, and the anodized aluminum acts as the two capacitor plates. The formed oxide layer is very thin and has a high electrical permittivity, allowing for high capacitance values.

Since aluminum electrolytic capacitors are polarized, they can only be connected in one direction. Polarity is marked on the capacitor body by a plus (+) or minus (-) sign. Connecting the capacitor in the incorrect direction can lead to reduced capacitance, decreased life span, and even permanent damage. Therefore, it is important to check the datasheet of the capacitor for the proper polarity, before connecting it.

The anodized aluminum plates provide the necessary voltage transience capability. The impregnated paper spacer also provides the capacitors with insulation, while the metal electrode provides contact with the backside of the foil. The metal electrode also helps to provide a degree of heat dissipation. This helps to ensure that the capacitor is able to handle high-current applications without any major issues.

In conclusion, ESMR421VSN471MA30S aluminum electrolytic capacitors have a wide range of applications in high-current and high-temperature general-purpose applications. These capacitors feature long life and can withstand up to 105°C. The working principle behind these capacitors is based on the fact that aluminum, when exposed to an electrolyte, forms an oxide layer on its surface, which acts as the dielectric. These capacitors are polarized and should always be connected in the proper direction, which is usually marked on the capacitor body. It is important to check the datasheet for the proper polarity before connecting the capacitor.

The specific data is subject to PDF, and the above content is for reference