T550B256M050AT

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Tantalum–Polymer Capacitors are characterized by extremely low ESR (Equivalent Series Resistance), very high capacitance–voltage product, wide temperature range, and superior performance. A Tantalum-Polymer Capacitor, such as the T550B256M050AT, is a highly efficient and reliable storage medium. It’s used in applications such as audio and power supply filtering, digital cellular phone platforms and other high-power and high-frequency devices. This article provides a brief overview of the T550B256M050AT, their application fields and working principle.

Uses of T550B256M050AT

T550B256M050AT is a tantalum-polymer capacitor composed of a tantalum-anode cathode-polymer electrolyte and a conductive polymer cathode. It is commonly used in battery-powered electronics such as cell phones, laptops, tablets, wearables, and the like because of its low ESR, high capacitance-voltage product and wide temperature range. The capacitance per given volume makes the T550B256M050AT an ideal solution for designing advanced applications such as output decoupling, noise filtering, and other applications where a wide range of temperature is required.

Due to its ultra-low ESR, the T550B256M050AT offers an improved ripple response than conventional SNR tantalum capacitors. The combination of these properties makes it suitable for use in high-frequency power management devices such as DC-DC converters, Class-D amplifiers, motor drives, and energy storage applications.

Working Principle

The T550B256M050AT is a tantalum electrolytic capacitor with a polymer layer which acts as the dielectric. The polarized electrolyte acts as a carrier for the counter ions when placed in an electric field. When the capacitor is charged, these ions travel towards the positive terminal and form a conductive layer at that junction. The majority of the capacitance originates from the polymer layer which acts as a dielectric, however it also stores additional capacitance from the counter ions.

The polymer layer acts as the separator between the anode and cathode layers which are composed of Tantalum. This contributes to the low ESR of the capacitor and allows the capacitance-voltage product to reach its full potential. In the T550B256M050AT, the high capacitance-voltage product allows for a wide temperature range and superior retention at low temperatures.

Conclusion

The Tantalum–Polymer Capacitor T550B256M050AT is a highly efficient and reliable storage device. It has features such as an extremely low ESR, a high capacitance–voltage product, a wide temperature range, and superior retention at low temperatures. The capacitor is typically used in battery-powered applications such as cell phones and other high-frequency devices. Its working principle involves the counter ions travelling to the positive terminal and forming a conductive layer and the polymer layer acting as the separator between the anode and cathode.

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