T540B157K003AH8710

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T540B157K003AH8710 is a type of tantalum - polymer capacitor, a form of capacitor which is based on solid electrolyte. Its use has become widespread due to its high capacitance to size ratio, low ESR and high currents within low voltage applications. Despite its higher cost, the increased efficiency of these capacitors mean they are often used in place of other technologies such as ceramic capacitors, or occasionally, even electrolytic capacitors.

Application Field

T540B157K003AH8710 capacitors are widely used in the application of low voltage DC circuits which require high capacitance, low cost, low ESR and temperature stability. Commonly, this type of capacitor is used in microprocessors, snubbers and battery-powered applications. It is also used in high frequency cable boxes, DC-DC converter in computers and uninterruptable power supplies. The low ESR of these capacitors also make them ideal for noise filtering and removing the effects of AC ripple.

Working Principle

Tantalum - polymer capacitors consist of a tantalum anode and solid polymer electrolyte. Typically, the anode is made of tantalum powder which has been compressed during manufacturing and then sintered. The electrolyte is a solid dielectric material made of a polymer material combined with anionic perm-selective fillers and a sense material. It is this combination which provides a greater capacitance per given surface area than similar capacitors.

When the capacitor is in use, the anode is the positive terminal of the device and the electrolyte forms a dielectric layer between the anode and the cathode. When current is applied, a potential (voltage) is created, resulting in the movement of electrons and the formation of an electric field. This electric field produces a charge between anode and cathode, thereby forming a capacitance.

Tantalum - polymer capacitors are notable due to their low ESR. This is achieved by a combination of factors such as the high conductivity of the electrolyte, and the fact that the anode and electrolyte have a low dielectric loss. Other benefits include a low risk of failure compared to other capacitor types and temperature stability.

Conclusion

The T540B157K003AH8710 is a type of tantalum - polymer capacitor which is increasingly being used to replace other technologies such as electrolytic and ceramic capacitors. Its advantages lie in its low ESR, its high capacitance to size ratio, and its temperature stability. T540B157K003AH8710 capacitors are widely used in low voltage DC circuits requiring high capacitance, low cost, and reliable performance.

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