T491D476M016AT7622 Capacitors

Tantalum Capacitors

T491D476M016AT7622 is an SMD type tantalum capacitor which is used primarily in applications requiring a high operating temperature range. It has numerous advantages over other types of capacitors, including low ESR (equivalent series resistance) and high temperature stability.

Application Field

T491D476M016AT7622 are widely used in numerous consumer and industrial applications due to their low ESR, high temperature stability, and other physical characteristics. These applications include the use in consumer computers, consumer electronics, automotive, telecommunications, aerospace, and medical industries. These capacitors are used in areas of the circuit where high temperature stability is a primary concern, such as high efficiency power supplies and oscillators. Additionally, these capacitors are widely used as bypass capacitors in any type of circuit, including digital components.

Working Principle

T491D476M016AT7622 tantalum capacitors operate using a principle of dielectric absorption and are able to maintain a constant voltage across the capacitor over a wide range of temperatures. Unlike traditional aluminum electrolytic capacitors, which have a single phase dielectric, tantalum capacitors have two dielectric phases. The first phase is the dielectric film, which acts as an insulating barrier for energy storage and leakage. The second phase is the capacitor\'s charge storage material, which contains an electrolyte solution of ionic compounds and a metal deposit. This combination of these two phases enables the capacitor to exhibit a low ESR and temperature stability.

The dielectric film is made from tantalum oxide and when connected to a voltage source, a thin layer of electron-attracting molecules on the film become positive ions. This positive charge attracts an electron in the opposite direction, creating an electric current in the process. As the capacitor charges, the positive ions become polarized and form a conductive path between the terminals. This conductive path, or bridge, is the electrical charge stored in the capacitor and is responsible for the capacitor\'s high temperature stability and low ESR.

Conclusion

T491D476M016AT7622 is a type of SMD tantalum capacitor which is used in countless consumer, industrial, and medical applications due to their low ESR, high temperature stability, and other physical characteristics. The way these capacitors work is based on two dielectric phases, one of which is an insulating film and the other a charge storage material. This combination of phases helps the capacitor to achieve its exceptional temperature stability and low ESR.