Tantalum - Polymer Capacitors

Tantalum - polymer capacitors are widely used in various applications such as mobile phones, digital appliances, computers, and other electronic equipment. These devices are constructed of two electrodes, an anode and a cathode, with a layer of tantalum based electrolyte separator in between. T550B756M075TH4252 is an example of such a device.

Applications

Tantalum - polymer capacitors are highly reliable and are suitable for various applications requiring low-profile components. Low-impedance capacitors are ideal for decoupling strategies and bypassing strategies in power electronic applications. Moreover, the solid-state construction with negligible leakage current makes them ideal for applications requiring a long hold time. In addition, these capacitors are used in low-voltage power supply and high-frequency circuits for filtering and buffering.

Workig Principle

The working principle of a tantalum-polymer capacitor is based on the electrostatic principles of capacitor construction. The electrodes are separated by a dielectric layer (polymer) of thin tantalum oxide. This layer acts as an insulator, preventing any current flow between the two electrodes. When a voltage is applied, electric field is created, resulting in attraction and accumulation of electric charge on the opposing electrodes. This creates a charge or a potential difference between the two electrodes, which can then be used to store energy.

The capacitance of a tantalum-polymer capacitor depends on the physical geometry of the device, such as the spacing between the two electrodes, dielectric thickness, and width of the device. The capacitance can vary significantly depending on the size of the device and the permittivity of the dielectric material. The leakage current of these devices is typically small and depending on the leakage current specifications for the application. The shelf life of the device is quite large and typically ranges from 500 to 2000 hours depending on the application.

Conclusion

T550B756M075TH4252 is a tantalum-polymer capacitor, a device used in many electrical applications. These devices offer excellent performance and reliability, making them the right choice for high-quality and demanding power applications. Their low leakage current and long shelf life make them ideal for applications requiring long hold times and decoupling strategies. The capacitance of these devices can vary significantly depending on their physical geometry and dielectric material.