T520X687M006ATE025

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Tantalum - Polymer Capacitors comprise a range of tantalum metallic electrolyte capacitors combined with a polymer material. They are high-capacity capacitors designed to offer enhanced electrical characteristics to a wide range of applications. The T520X687M006ATE025 is one such capacitor and this article will discuss the application field and working principle of it.

The T520X687M006ATE025 is designed with a polymer containing a large dielectric constant to provide higher values of capacitance - more than double a standard tantalum capacitor. This COTS (Components of Standard Technology) capacitor features a high volumetric efficiency per unit, making it suitable for applications that have limited space with high current or voltage requirements. In particular, the T520X687M006ATE025 stands out for its high capacitance density, low ESR (Equivalent Series Resistance) and high ripple current rating.

In terms of applications, the T520X687M006ATE025 is ideal for electrolytic SMD (Surface Mount Devices) for DC-DC converters, VHF/UHF switch-mode power supplies, power factor correction (PFC) and resonant converters. Additionally, the capacitor can be used in on-board DC power distribution networks and power amplifiers, as well as in switched mode battery charger circuits and motor control units.

Regarding working principle, the capacitor uses an electrolytic material called tantalum as the element of its construction. Tantalum is often used as a dielectric because of its extraordinary ability to store charge. Electrolytic tantalum capacitors are typically polarized and require proper connections in order to work correctly.

The capacitor construction consists of three main parts: an anode, a cathode and the electrolyte. The anode is made from a sintered tantalum pellet, and the cathode is a flat plate made from a similar material. The electrolyte is typically an organic solvent, which provides a conductive path between the anode and the cathode.

When the T520X687M006ATE025 is charged, the positive charge accumulates on the anode and the negative charge accumulates on the cathode. During discharge, the opposite occurs. This is known as double-layer capacitance and is responsible for the high capacitance density of the capacitor.

T520X687M006ATE025 is also able to accept a ripple current, which is important in applications such as DC-DC converters, power amplifiers and power factor correction circuits. This is because they require regular intermittent pulses of higher current and voltage, which the capacitor can handle without being permanently damaged.

In conclusion, the T520X687M006ATE025 capacitor is a high-capacity polymer capacitor designed to offer enhanced electrical characteristics to a wide range of applications. It is most suitable for electrolytic SMD applications, DC-DC converter, VHF/UHF switch-mode power supplies, power factor correction (PFC) and resonant converters. Thanks to its double-layer capacitance, it can also handle a ripple current, making it an attractive choice for applications requiring frequent pulses of current and voltage.

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