TAJT476K004RNJ

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Tantalum capacitors are solid electrolytic capacitors composed of tantalum metal powder and liquid electrolyte. The capacitance of a tantalum capacitor is determined by its geometry and the dielectric constant of the tantalum pentoxide (Ta2O5) layer. The capacitance value is generally represented in Farads (F). The TAJT476K004RNJ tantalum capacitor is a high-stability tantalum capacitor with non-polarized electrode structure, designed for use in high-frequency and low-voltage applications such as switched-mode power supplies, and is used in applications requiring precision capacitance, including wireless infrastructure and data centers.

The TAJT476K004RNJ is a type of non-polarized composite tantalum chip, which is considered to be one of the most stable tantalum capacitors available. The electrode structures consist of four concentric electrodes and one center electrode, providing a stable electrical field over the entire capacitor surface. This structure prevents the application of voltage to cause local polarization, leading to much higher capacitance stability over a wide range of temperature variations than other types of capacitors. Furthermore, the combination of a high-stability tantalum metallized structure and liquid electrolyte, which is stored between the internal electrodes and the external case, provides higher capacitance stability and lower ESR than is achievable with other types of capacitors. The TAJT476K004RNJ, due to its comprehensive properties, is ideally suited for applications requiring precise capacitance.

The working principle behind the TAJT476K004RNJ is that it uses the dielectric properties of the tantalum pentoxide (Ta2O5) layer, which is formed on the surface of the tantalum metal powder, to store electrical energy. When connected in a circuit, the capacitor will draw power from the circuit, causing the tantalum metal powder to oxidize into the Ta2O5 layer. This layer effectively stores electric energy; when the capacitor is connected in the circuit, electrons are collected on the surface of the Ta2O5 layer which acts as one of the electrode plates. When a voltage is applied, the electrons move back towards the other electrode plate, creating a continuous current flow.

The TAJT476K004RNJ can be used in a variety of applications, including switched-mode power supplies, wireless infrastructure, and data centers. In switched-mode power supplies, the capacitor is used to absorb transient voltages and provide increased power supply regulation. The TAJT476K004RNJ is ideal for this application due to its reliability and excellent capacitance stability. In wireless infrastructure, the TAJT476K004RNJ is used to provide precise impedance matching and improved signal quality. In data centers, the capacitor is used to provide high current and voltage holdup during power failures, ensuring a trouble-free and uninterrupted operation.

In conclusion, the TAJT476K004RNJ is a high-stability tantalum capacitor with excellent reliability, stability, and performance. Its four-pole electrode structure and non-polarized electrode structure prevent the application of voltage from causing local polarization, leading to higher stability and more precise capacitance. The capacitor is ideal for applications requiring precise capacitance, such as switched-mode power supplies, wireless infrastructure, and data centers.

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