F311A476MBA Capacitors

Tantalum - Polymer Capacitors are widely used for various applications due to their superior electrical and thermal characteristics. The F311A476MBA, which belongs to this category, is no exception. This tantalum capacitor features excellent capacitance, ESR and DC leakage current, ensuring a high level of performance and reliability. In this article, we will discuss the application field and working principle of F311A476MBA.

Application Field of F311A476MBA

F311A476MBA is a type of surface-mount capacitor designed for high-end applications where performance, volumetric efficiency and reliability are paramount. This capacitor is designed to meet demanding requirements of most automotive, industrial and military systems. Especially, the F311A476MBA capacitor is ATP certified, making it the ideal choice for applications requiring this certification, such as automotive and military applications.

F311A476MBA features low ESR, low leakage current, high ripple current and superior temperature performance. It is also able to handle demands of harsh and demanding environments, providing high reliability and performance. As such, the capacitor is widely used for power circuits, switching power supplies, resonators, filtering, hold-up capacitors, power supply decoupling circuit, etc.

Working Principle of F311A476MBA

The F311A476MBA tantalum capacitor belongs to the polymer-based tantalum capacitor family, which is characterized by high volumetric efficiency and low equivalent series resistance (ESR). Its primary components include two cylindrical electrodes, a dielectric layer and a conductive polymer as the electrolyte.

The internal structure of the F311A476MBA capacitor consists of tantalum pellets and conductive polymer, which is pressed and sintered in the form of an anode and a cathode. The anode and cathode are separated by a dielectric layer. During the operation, the two electrodes exchange ions by the electrolyte. These ion exchanges hold charge on the capacitor, thus storing energy.

The capacitance of the F311A476MBA capacitor is determined by the area of its electrodes, the distance between them and the dielectric constant (k-value) of its insulation. This parameter determines the storing capacity of the capacitor. The ESR parameter determines the performance of the capacitor. It affects the output power and is a major part of the losses. The working range of the capacitor is determined by its voltage and temperature limits. The capacitance of the F311A476MBA capacitor degrades over time due to the aging processes.

Conclusion

The F311A476MBA is a tantalum capacitor manufactured by leading manufacturers, which is designed particularly to meet the needs of automotive, industrial and military applications. It has excellent ESR and DC leakage current, making it suitable for high-end applications. Its high volumetric efficiency and low ESR makes it the preferred choice for power circuits, switching power supplies, resonators, filtering, hold-up capacitors, power supply decoupling circuits, etc. Its working principle is based on the exchange of ions between the two electrodes of the capacitor.