TAP335K025CRS

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Tantalum capacitors are a type of electrolytic capacitor. These capacitors use tantalum as the anode, preferably in powdered form, because its high surface area to volume ratio increases the capacitance of the device. In the application field, TAP335K025CRS solid tantalums are used for general purpose bulk storage, with applications such as buffering, energy savings in portable devices, leakage protection, and power backup systems.

The working principle of a tantalum capacitor involves the use of an electrolyte, which works together with the dielectric layer formed on the tantalum anode to produce a non-polarized capacitor. This non-polarized trait is ideal for applications where the circuit must be able to function even in the presence of reverse polarities. To form a tantalum capacitor, a layer of tantalum pentoxide (Ta2O5) is sputtered onto the tantalum anode in such a way that it forms a homogenous layer of oxide on its surface. This oxide forms the dielectric layer of the capacitor, while the electrolyte being used acts as the cathode.

When a DC voltage is applied to the capacitor, electrons flow through the oxide layer and accept protons from the electrolyte. The electrolyte acts as the cathode and reduces the oxide layer, resulting in a decrease in the thickness of the dielectric layer in the capacitor. The decrease in the thickness of the dielectric layer increases the overall capacitance of the device. Furthermore, the electrolyte used in the capacitor plays an important role in controlling the leakage current, which affects the efficiency and reliability of the capacitor.

The TAP335K025CRS solid tantalums are specifically designed for board-level applications, such as personal and mobile electronics, telecommunications, and network computing. They come with 100µF low profile SMD packages and they provide high-energy storage capacity, allowing the system to respond quickly to Peaks in load current and supply voltage fluctuations. Aside from these, they also possess a low ESR rating, meaning that they have a lower impedance than other capacitors, thus allowing the device to achieve greater design margins in terms of output power and efficiency.

In conclusion, the TAP335K025CRS tantalum capacitors are designed with high capacitance values and an excellent ESR rating, allowing them to be used in applications where high reliability and board-level decoupling are needed. With their low profile, they are also ideal for use in space-restricted and space-constrained designs.

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