CWR29HC476KBHA

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Tantalum Capacitors

Tantalum capacitors are among the most important passive electrical components available. They are used in an extensive range of applications across automotive, consumer, industrial, and medical markets. This article focuses on the CWR29HC476KBHA application field and working principle of tantalum capacitors.

What are Tantalum Capacitors?

Tantalum capacitors are a type of electrolytic capacitor. They typically consist of a tantalum metal powder, which is pressed and sintered into a pellet or cylindrical anode. A thin layer of tantalum oxide is then formed on the surface of the anode using a process known as polarized oxidation. Finally, the anode is placed into a metal can, which serves as an electrical contact and provides the structural support for the components. The can is then filled with an electrolyte and sealed to complete the capacitor. Due to their small size, low leakage current, and high capacitance-volume ratio, tantalum capacitors are used in a wide variety of applications, including automotive, consumer electronics, industrial, and medical.

CWR29HC476KBHA Application Field

The CWR29HC476KBHA is a small, surface mount tantalum capacitor that is available with a range of capacitance and voltage ratings. It is primarily used in automotive and military applications, since its Micro-EPCOS series designs offer low insertion loss and low inductance, even at high frequencies. Moreover, it is resistant to shock, vibration, and thermal cycling, which makes it suitable for use in extreme environments. It is also available in various types, including feed-through, radial wrap-around, and Cogent-EPC radials.

CWR29HC476KBHA Working Principle

Tantalum capacitors work on the principle of electrostatic capacitance. This phenomenon occurs when two conductive surfaces are separated by an insulator or dielectric. When a voltage is applied across the two surfaces, a certain amount of electric charge is stored on the two surfaces. The capacitance of the capacitor is then equal to the ratio of the stored charge to the applied voltage. In the case of the CWR29HC476KBHA, the dielectric is the thin layer of tantalum oxide that is formed on the anode. The anode and the outer metal can then act as the two conductive surfaces, forming an electrolytic capacitor capable of storing an electric charge.

Conclusion

Tantalum capacitors are widely used in a range of applications, from automotive to medical. The CWR29HC476KBHA is one such capacitor, which is used for its low insertion loss and high capacitance-volume ratio. It works on the principle of electrostatic capacitance, where an electric charge is stored between two conductive surfaces that are separated by an insulating dielectric. This article has discussed the application field and working principle of this particular capacitor, as well as how it is used in different industries.

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