PLF0G681MDO1TD

ALUMINUM - POLYMER CAPACITORS

The PLF0G681MDO1TD capacitors are one type of aluminum-polymer capacitors that is used when reliability, high temperature operation and extreme switching frequency is required. An aluminum-polymer capacitor combines the best qualities of the two popular types of capacitors – aluminum electrolyte and polymer electrolyte. Such devices are very useful for high-performance applications because of their low Equivalent Series Resistance (ESR) and high capacitance in relation to their size.

Application Field

The PLF0G681MDO1TD capacitors are ideal for use in applications such as AC-DC and DC-DC low-voltage regulator, memory backup, voltage monitor circuit, automotive onboard Computer, fuel control system, hard disk drive and LCD TVs, due to its extremely small size, low ESR and temperature characteristics. It is also used in power supplies and surge suppression.

Working Principle

This type of capacitor works using the ‘double-layer’ principle, which means that the capacitance of the capacitor is formed when a given potential difference is applied between the two electrode layers and an electric double layer is generated in the surface region of the electrodes. The double layer will store charge and thus can be used as a capacitor. To increase the capacitance of the device, the distance between the two electrodes can be reduced.

The aluminum-polymer dielectric used in the PLF0G681MDO1TD capacitors is a mixture of alumina, carbon and organic materials such as polyethylene, acrylic ester and vinyl polymer. These materials are all electrically insulating and hence the device can store more charge than other capacitors with a lower dielectric constant. Another advantage of this type of capacitors is that they do not suffer from breakdown due to high voltages.

The PLF0G681MDO1TD capacitors are equipped with an internal protection mechanism so that they remain stable when exposed to long-term voltage or thermal cycling. This is because the aluminum-polymer dielectric can adhere to the surface of the electrodes even after many years of use, thus providing a long-term durability.

The aluminum-polymer capacitors also have a low self-discharge rate, which means that they will maintain their capacitance while still effectively transferring charge after long idle periods. This makes them very attractive for use in applications where power must be constantly provided with minimal degradation over time.

Conclusion

The PLF0G681MDO1TD Aluminum-Polymer capacitors are an excellent choice for high-performance applications due to their low ESR and high capacitance. The mixture of aluminum, carbon and organic materials used for their dielectric layer makes them ideal for withstanding high voltages, and the internal protection mechanism provides them with a long-term durability. They are also known for their low self-discharge rate, which makes them suitable for many types of power supply applications.