T491C476K010AG

The T491C476K010AG is a type of tantalum capacitor. Tantalum capacitors, also known as tantalum electrolytic capacitors, are electrolytic capacitors with a tantalum cathode and are classified as a polarised capacitor. Despite their small size, they have high capacity, making them ideal for applications where space is a constraint.

Tantalum capacitors are unique because they are a non-solid electrolytic capacitor. Instead, they use a type of paper which is soaked in a specialised electrolytic liquid. This provides a barrier between the two electrodes, thereby creating a far higher insulation resistance and lower equivalent series resistance (ESR). Whereas most other capacitors will use a solid electrolyte, such as aluminum oxide or polystyrene, to prevent electrical leakage and ensure their polyvalent nature, a tantalum capacitor uses a dielectric oxide film and a polyvalent electrolyte with a higher dielectric constant.

The T491C476K010AG\'s main application is for signal decoupling and power supply filtering, for which it is employed as a device for reducing high frequency noise in circuits. It does this by connecting easily between power supplies and loads, and its higher dielectric constant allows it to store a higher amount of energy than other capacitors in its size. Additionally, it has a low ESR which helps to reduce ripple current and increase energy storage capacity.

The working principle of tantalum capacitors is based on capacitance. When two conducting surfaces are placed in an electrical field, it causes an electric current to flow between them and a potential difference is created. This potential difference is the capacitance and it causes a stored electrical energy, which can be discharged and recharged.

The T491C476K010AG\'s working principle is similar to that of any other standard tantalum capacitor. It\'s two electrodes act as capacitors, storing electrical energy and discharging it when needed. This capacitor also has a lower ESR, making it ideal for applications where reduced ripple current is required.

In summary, the T491C476K010AG is a type of tantalum capacitor which is designed to provide signal decoupling and filtering. Its main advantages include its small size, higher energy storage capacity, and low ESR. The capacitor works on the basis of capacitance and its two electrodes act as capacitors, storing electrical energy and discharging it when required.