PSU4335C

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Aluminum electrolytic capacitors are passive components used for energy storage and energy filtering in electronic circuits. PSU4335C is a type of aluminum electrolytic capacitor. In this article, the application fields and working principle of PSU4335C will be discussed.

Application Fields

PSU4335C capacitor is a miniaturized model, suitable for high-density PCB boards and fields where space is demanding. It is used in power supply (DC/DC, AC/DC, AC/AC) equipments, power line filters, uninterruptible power sources (UPSs), etc., for improving power quality, such as smaller filter inductance, smaller EMI, higher operational efficiency and higher ripple current capability. It can effectively reduce the cost of using multiple electronic components to achieve the same effect. Furthermore, PSU4335C capacitor can be used in LV and HV motor drives, high-frequency rectification and directional power grids.

Working Principle

The core of PSU4335C capacitor is an aluminum (Al) or titanium (Ti) foils, which is coated with an oxide film (electrolyte) layer. The two Al foil layers and the electrolyte layer are separated by a paper filler material that functions as an insulator. The Al foil has a high dielectric constant, so that a small physical size can produce a large capacitance value. The main characteristics of PSU4335C are low ESR, small size and lower temperature coefficient compared to other similar products.

When electric signals pass through, capacitors allow or block these signals depending on their frequency. The capacitor can provide a temporary storage of electricity by virtue of its polarity and capacitance. When the external voltage across PSU4335C capacitor increases, the electrolyte layer acts as a double layer, blocking the flow of current. Thus, PSU4335C capacitor can be used to store and provide charges for short times, thus acting as a filter to reduce Ultra High Frequency (UHF) disturbances. Moreover, PSU4335C capacitor can also reduce the converted transient peak current generated in the switching power supply.

Conclusion

In conclusion, PSU4335C capacitor is a miniaturized aluminum electrolytic capacitor used for energy storage and energy filtering applications. Its application fields include power supply equipments, power line filters, motor drives, and other related fields. It has a small size and low ESR characteristics, which makes it suitable for high-density PCB boards. The working principle of PSU4335C capacitor is based on its capacitance value and polarity, which can provide a temporary storage of electricity and filter out UHF disturbances.

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