T491U226K010AT2478

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Tantalum capacitors are electronic components used to store electrical energy in an electrostatic field. They feature high capacitance, low weight, low volume, and low equivalent series resistance (ESR). The T491U226K010AT2478 is a type of tantalum capacitor specifically designed for power electronics, such as on-board power supplies, AC/DC converters, and switch-mode power supplies (SMPSs).

Application Field

The T491U226K010AT2478 series provides high capacitance and ESR values, making it ideal for power electronics applications with high current and voltage. Its solid electrolyte construction ensures excellent resistance to leakage current and very low equivalent series inductance (ESL). This makes it a great choice for high-efficiency power systems and applications where power factor correction is required.

Due to its high capacitance values, the T491U226K010AT2478 can be used in applications such as dc-to-dc converters, switching power supplies, and high-current rectifiers. It also can be used to supply high-power spikes, such as those in high-performance communication systems.

The high-temperature, solid-electrolyte construction of the T491U226K010AT2478 series allows it to operate at temperatures up to 125°C and up to 80°C case temperature. This makes it an ideal choice for applications such as LED driver modules, automotive, and any other applications operating at extreme temperatures.

Working Principle

The T491U226K010AT2478 is a type of tantalum capacitor. Tantalum capacitors consist of two electrodes placed in a conductive electrolyte, separated by a dielectric material. As an electric charge is applied to one electrode, the electrolyte provides a current path from one electrode to the other. This creates an electrostatic field between the two electrodes which stores electrical energy.

The construction of the T491U226K010AT2478 allows the dielectric material to be extremely thin. This, combined with the high capacitance values, allows the capacitor to hold more electrical charge than a traditional ceramic capacitor. The high ESR values also make this type of capacitor highly efficient, as it can handle large amounts of current with very little power loss.

The T491U226K010AT2478 series is designed to operate at high temperatures, making it ideal for power electronic applications such as LED driver modules and automotive. This type of capacitor is resistant to voltage spikes and can handle high inrush currents. The solid electrolyte construction ensures low ESL values, resulting in high-efficiency power systems.

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