UKW2A010MDD1TA

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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are electrochemical components used in electronics and electric power systems. They are prominent in their capacity to store electric energy and are capable of withstanding high voltage. This type of capacitor is composed of two separated conductive surfaces, with an electrolyte between them, which acts as an insulator. One of the surfaces acts as a positively-charged anode, while the other acts as a negative-polar cathode. The anode and cathode in aluminum electrolytic capacitors are typically made of aluminum foil, with an oxide layer used to prevent electric leakage.

UKW2A010MDD1TA Application Field and Working Principle

UKW2A010MDD1TA aluminum electrolytic capacitors are general-purpose components that can be used in a wide variety of applications in both consumer and commercial electronics. In particular, they are well-suited for applications in which they may experience transient voltages and currents, as they have an excellent ripple current capability and high-temperature operation. Furthermore, they are highly resistant to degassing, making them suitable for applications that require long-term stability and reliability.

The working principle of aluminum electrolytic capacitors is based on the capacity of the electrolyte to store electric energy. The electrolyte acts as an insulator that separates the two conductive surfaces, creating a node where charge can be stored. An electric field is established across the electrolyte when a voltage is applied to the capacitor. The electric field creates an electric charge in the electrolyte, which is then stored on the two conductive sides. This creates an electrical potential difference between the two surfaces, with the anode being positively charged and the cathode carrying a negative charge.

Capacitance is determined by the area of the anode and cathode and the thickness of the electrolyte between them. The greater the area of the conductive surfaces, the more charge the capacitor can hold. Thus, increasing the thickness of the electrolyte between these surfaces can decrease the capacitance of the capacitor. Lower capacitance can be useful for applications that require less energy storage, such as signal filtering.

Capacitance can also be affected by the temperature of the capacitor. As temperature increases, the capacitance decreases due to thermal expansion of the electrolyte. This can be a problem in applications that require high capacitance and high temperature operation. To address this, aluminum electrolytic capacitors have a “temperature compensation” feature, which takes into account the changes in temperature and adjusts the capacitance accordingly.

Aluminum electrolytic capacitors are able to withstand very high voltage and are capable of storing a large amount of energy. For this reason, they are often used in power systems and switching circuits, where high-power switching can occur. Furthermore, they offer excellent ripple current capability and high-temperature operation, making them suitable for applications that may experience transient voltages and currents. Finally, they are highly resistant to degassing, making them useful for applications that require long-term stability and reliability.

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