T550B687K008AH

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Tantalum-polymer capacitors have become increasingly popular in many industries as they are able to combine the low-ESR (Equivalent Series Resistance) of a tantalum capacitor with the long shelf-life, low DCL (DC Leakage Current) and improved capacitance stability of a polymer capacitor. The T550B687K008AH capacitor is one such device, combining the two components in a very clever way to create an excellent solution for a wide range of applications.

The capacitor itself is constructed with a solid tantalum anode and a solid oxide electrolyte, covered with a dielectric tactile polymer layer, making it very small in size and lightweight. This makes it ideal for use in a number of applications, some of which include power supplies, signal conditioning, clock circuitry and filters. As the device is self-healing, meaning it has the ability to heal after a short between the plates, it is also suitable for use in circuits where it needs to be exposed to voltage transients or a high-frequency environment.

The working principle of the T550B687K008AH is relatively straightforward. When voltage is applied, current begins to flow from the anode to the cathode and an electric field is created which is the basis for the short-term storing of the energy. The capacitor starts to charge and an internal resistance is created in the form of a wave, with the resistance gradually decreasing as the charging current increases. This energy is then stored as an electrostatic charge contained between the two plates. The amount of energy stored is determined by the capacitance of the device, which is the measure of the ability for the capacitor to store energy. The capacitance is determined by the size of the capacitor plates and the distance between them, the voltage applied to the device and the dielectric used. For example, the T550B687K008AH has a capacitance of 550μF (microfarad) and can store up to a maximum voltage of 6.3 volts.

The capacitance of the T550B687K008AH also means it is particularly suited to use in high frequency applications, such as when used in RF decoupling or bypassing circuits, due to its low impedance. It can be used in power supplies where voltage transients must be suppressed and in plastic logic circuits, as the polymer touch layer provides superior temperature stability compared to other conventional dielectrics.

The T550B687K008AH capacitor is a versatile device and is suitable for a wide range of applications. It provides a solution for high frequency and power line applications, as well as signal conditioning and clock circuitry, due to its combination of low ESR and high capacitance. Moreover, its rich dielectric tactile polymer layer provides superior temperature stability and enables self-healing, making it a reliable and robust solution.

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