T491C335M035AT42802478

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Overview of Tantalum Capacitors

A tantalum capacitor (also known as a tantalum electrolytic capacitor) is an electronic component composed of two conductive plates separated by an electrolyte, usually but not always manganese dioxide. They have a high capacitance value per unit volume and are widely used for filtering and decoupling applications in low- and medium-frequency circuits. They offer superior high-frequency performance, reliable overvoltage protection, and space-saving construction.

Construction of Tantalum Capacitors

Tantalum capacitors consist of a tantalum oxide dielectric material formed upon the surface of a sintered tantalum anode core. A thin, porous oxide layer of tantalum pentoxide is formed on the anode surface during anodic oxidation. This layer is then coated with an organic polymer, providing insulation and preventing spillage of the electrolyte.

The anode and cathode leads of the capacitor are connected to the anode and cathode plates respectively. The cathode plate is usually made of aluminum and is connected to the capacitor via a metal-electrolyte junction. The electrolyte is usually composed of a mixture of ethylene glycol and water.

T491C335M035AT42802478 Application Field & Working Principle

T491C335M035AT42802478 is a high temperature polymer electrolytic capacitor, which can work stably in the temperature range from -55℃ to 125℃. With its low-impedance performance, it is widely used as an anode bypass capacitor for DC/DC controllers and in buffering signals for AC/DC converters. It is also suitable for high frequency bypass filtering for audio frequency applications.

The working principle of the capacitor is based on the behavior of electric charges when the circuit is closed. When the circuit is closed, electrons from the power source will flow to the positive plate of the capacitor while similarly, electrons from the negative plate of the capacitor will flow to the negative plate of the power source. This flow creates a differential electric field between the two plates. This electric field produces an energy which is stored in the capacitor, thus allowing it to act as a capacitor.

Conclusion

T491C335M035AT42802478 represents the new generation of low inductance and high temperature Tantalum Capacitor products. It is widely used as an anode bypass capacitor for DC/DC controllers, high frequency bypass filtering in audio applications, and buffering signals for AC/DC converters. The working principle of this capacitor is based on the behavior of electric charges when the circuit is closed, allowing it to store energy and act as a capacitor.

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