M551B108K050AG

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Tantalum capacitors, commonly known as “tantalum-polymer capacitors,” are a type of capacitor that uses tantalum metal as the anode material. The M551B108K050AG is one of the most popular models in this category. It is a radial-leaded and metallized-tantalum-polymer chip capacitor that features low ESR and DC leakage, making it suitable for a variety of applications. In this article, we will explore the application field and working principle of the M551B108K050AG.

Application Field of M551B108K050AG

The M551B108K050AG is a surface-mount, metallized-tantalum-polymer chip capacitor that features 8-V rated voltage and 10 uF capacitance. It is designed for use in high frequency and high density applications such as smartphones, tablets, and computers. It is also used in power supplies, interface circuits, audio circuits, and in satellite, automotive, and industrial circuits. Furthermore, its low ESR-rating and DC leakage make it suitable for high-reliability timing applications, such as in clock circuits.

Working Principle of M551B108K050AG

In the M551B108K050AG, tantalum metal is the anode material, along with a high-dielectric-constant polymer as the dielectric. During assembly, a barrier layer of tantalum pentoxide is grown on the anode to prevent any leakage of the electrolyte into the device. The barrier layer is also key for its high voltage and temperature capability. A coil of wire is embedded in the tantalum-polymer matrix and acts as the cathode or second plate of the capacitor.

When the M551B108K050AG is energized, a charge is applied to the circuit. This charge is stored by the capacitor, creating an electric field between the capacitor\'s anode and cathode. The energy stored in the electric field is proportional to the amount of charge stored in the capacitor. The M551B108K050AG also features high ripple current capability due to its low ESR-rating and DC leakage.

Conclusion

The M551B108K050AG tantalum-polymer capacitor is a popular model that is designed for use in applications that require high frequency and high density. Its low ESR and DC leakage make it suitable for high-reliability applications such as clock circuits. When energized, the capacitor stores an electric charge between its anode and cathode, which is proportional to the amount of charge stored. The M551B108K050AG also features high ripple current capability due to its low ESR-rating and DC leakage.

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