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Tantalum Capacitors

Tantalum capacitors are widely used in many types of electronic circuits, due to their high capacitance, small size and reliability. The T491B475K016ZTAC00 is a tantalum capacitor specifically designed for use in DC-DC converter applications. This capacitor offers low ESR and high ripple current capability, making it an excellent choice for power supplies, eliminating EMI.

Application Field

T491B475K016ZTAC00 is mainly used in switching-mode power supplies, automotive infotainment systems, industrial, medical, communication and military systems. In all of these applications, the capacitor is used to filter out electrical noise and reduce the ripple current that is produced in applications where a large amount of energy is supplied or consumed rapidly.

The high capacitance of this capacitor helps increase the capacitance-to-volume ratio of the device, allowing for a smaller PCB footprint. Additionally, Tantalum capacitors demonstrate excellent temperature and voltage stability, which helps eliminate thermal runaway in sensitive circuits. With its low ESR, this capacitor also features good performance for power conversion applications, enabling improved efficiency and power density.

Working Principle

Tantalum capacitors employ a chemical reaction between the tantalum metal and an electrolytic solution to create a chemical capacitance. The electrolytic solution holds a negative charge, while the tantalum holds a positive charge. As a current is applied, electrons are attracted to the negative plate and the positive plate begins to lose electrons. This results in the negative plate being charged, while the positive plate is discharged. The difference in charge between the two plates creates an electric field, which acts as a dielectric and stores the energy in the form of electric potential.

The electrochemical process also creates an oxide film that acts as an insulator and prevents current from passing through the plates. This helps to improve the performance and reliability of the device, and protects it from corrosion, oxidation and thermal runaway. In addition to its excellent capacitance, the tantalum capacitor also has low ESR, meaning it can handle high ripple current. This makes it ideal for power conversion and filtering applications.

The T491B475K016ZTAC00 tantalum capacitor has excellent performance characteristics which make it ideal for various DC-DC converter applications. Its small size, low ESR and high capacitance make it a highly efficient and reliable capacitor for demanding applications. Its small size also helps to reduce PCB footprint, simplifying the design and saving space. This makes it an ideal choice for many types of electronic devices, where size and efficiency are a priority.

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