25YXG2200MEFCGC18X20

Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are versatile components used for applications such as timing, noise reduction, energy storage, and signal coupling from digital circuits to analog circuits. They are a type of capacitor, also known as a “supercapacitor”, with an electrolyte made from an aluminum oxide layer. Aluminum electrolytic capacitors can be classified into two categories: polarized and non-polarized.

The 25YXG2200MEFCGC18X20 capacitor is an aluminum electrolytic capacitor. It is a polarized one, meaning it needs an external voltage to be applied to two terminations to get the desired capacitance. The 25YXG2200MEFCGC18X20 capacitor is a non-solid μF capacitor that has an operating temperature range of -40°C to +85°C and is rated for a voltage of 6.3VDC. The electrical characteristics of this capacitor are 18mm diameter, 20mm height, leading pitch of 2.5mm, standard leakage current of 0.1mA or less, and resistance to rated voltage of 2000 hours.

Application Field

Aluminum electrolytic capacitors are widely used for DC blocking, signal coupling, bypass, and energy storage applications in consumer electronics, automotive, industrial, and computer systems. The 25YXG2200MEFCGC18X20 capacitor is specifically suited for applications which need a good isolation between digital and analog signals, such as in motor controllers, ethernet and CAN systems, frequency modulation, and more.

It can be used as a noise filter to reduce unwanted high frequency noises, as a filter capacitor to reduce inrush current, or as a polarizing capacitor, since its polarized nature makes it suitable for this kind of applications.

Working Principle

The basic principle of working of aluminum electrolytic capacitors is outlined as follows: The capacitor comprises a conductor plate (anode) dipped in an electrolyte solution, surrounded by a flexible aluminum foil (cathode). The electrolyte solution is composed of a salt, and it allows electrical positrons and electrons to pass through it. This causes the electrolyte to become charged temporarily. This charge, in turn, causes a current to flow between the two plates when an external voltage is applied. The current that flows between the two plates is proportional to the external voltage, leading to a capacitance value.

The 25YXG2200MEFCGC18X20 capacitor has a rated capacitance of 220μF, making it suitable for applications that require a moderate capacitance. If the working temperature of the component is above 85°C, its capacitance value will decrease. What’s more, ripple currents should not exceed 10-20% of its rated maximum ripple current each time.

Conclusion

The 25YXG2200MEFCGC18X20 is a non-solid μF aluminum electrolytic capacitor that is suitable for applications such as DC blocking, signal coupling, bypass, and energy storage in consumer electronics, automotive, industrial, and computer systems. Its polarized nature and its rated capacitance of 220μF make it a great choice for noise filtering and polarizing applications. The working principle of an aluminum electrolytic capacitor is based on the temporary charge created in the electrolyte solution when an external voltage is applied, leading to a current flow between the two plates. When selecting an aluminum electrolytic capacitor for applications that require a good isolation between digital and analog signals, the 25YXG2200MEFCGC18X20 is an excellent choice.