EET-UQ2W151CA

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Aluminum electrolytic capacitors are common electronic components, often found in home appliances and in general electronics circuits. The EET-UQ2W151CA is an aluminum electrolytic capacitor from Panasonic that is available in through-hole and surface-mount packages. In this article, we will discuss the application field and working principle of this device.

Application Field

The EET-UQ2W151CA aluminum electrolytic capacitor is well-suited for several different applications. Primarily, the device is suited for power supply filtering and smoothing in AC/DC circuit applications. It is also suitable for general power supply and power line filtering in general electronics circuits, as well as for frequency characterization of telecommunications equipment, stabilizing, and bypassing. The device is also suitable for snubber and additional filtering in switched-mode power supplies.

Working Principle

The EET-UQ2W151CA aluminum electrolytic capacitor is composed of a combination of an aluminum foil, a non-solid electrolyte, a metal electrolyte, and a paper separator. In operation, the device stores energy by storing electric charge on the two separated plates of the capacitor. This storage occurs when there is a difference in potential between the two plates. This difference in potential is created by applying an electric field across the two plates. This electric field causes positive charges to accumulate on one plate and negative charges on the other. The positive and negative charges create an opposite electric field, which pulls more charges towards the plates, resulting in increased electric charge.

The electric field also causes the aluminum film to oxidize, forming an oxide membrane. This membrane serves as an insulator that prevents the current from flowing between the two plates and thereby prevents a short circuit. The capacitance of the capacitor is determined by the size of the two plates, the thickness of the electrolyte, and the type of electrolyte used. The larger the size of the plates, the thicker the electrolyte, and the specific type of electrolyte, the higher the capacitance.

When the capacitor is discharged, the electric charge on the two plates will dissipate slowly over time. This is due to the oxide membrane that is created when the capacitor is charged. This membrane acts as a resistance to the current, which reduces the current flow between the plates and results in a slower discharge.

Conclusion

The EET-UQ2W151CA aluminum electrolytic capacitor from Panasonic is suitable for several different applications, including power supply filtering and smoothing, general power supply and power line filtering, frequency characterization of telecommunications equipment, stabilizing, and bypassing. In operation, the capacitor stores energy by storing electric charge on the two separated plates of the capacitor, and the capacitance of the capacitor is determined by the size of the two plates, the thickness of the electrolyte, and the type of electrolyte used. When the capacitor is discharged, the electric charge on the two plates will dissipate slowly over time due to the oxide membrane that is created when the device is charged.

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