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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are a type of capacitor that utilizes an anodized aluminum foil as one of its plates and a non-solid electrolyte as the other plate. It has a number of important applications, including smoothing ripple currents, decoupling, filtering and energy storage. The performance of aluminum electrolytic capacitors is determined mainly by three key factors: cathode area, electrolyte properties and temperature coefficient of capacitance. The UPJ2A470MPD is the capacitance value of the aluminum electrolytic capacitor.

Applications of UPJ2A470MPD

The UPJ2A470MPD application field includes communication equipment, electronic instruments, power supply, industrial automation and automobiles. The main applications are decoupling and filtering, including the common application of bypassing and de-noise in various electronic devices. It is widely used in the operational amplifiers, switching power supplies and the cascade connections of the voltage reducing circuit.

Working Principle of UPJ2A470MPD

Aluminum electrolytic capacitors use the principle of reverse electrolytic. A high-purity, non-solid electrolyte generally composed of a mixture of organic solvents and ionic salt is applied to the anodized aluminum foil. The electrolyte forms a layer of oxide film on the surface of the aluminum sheet called a cathode. Meanwhile, the negative electrode plate is made of highly conductive aluminum and forms a liquid passivation film on its surface. When a constant current is applied and the capacitor is charged, ions will pass through the electrolyte and attach to the cathode. As a result, a large charge is constructed on the cathode and a corresponding charge is formed on the other electrode. Thus, the capacitor is formed and can store electric energy.

The UPJ2A470MPD is capable of storing a charge close to its rated capacitance value even with large ripple current passing through it. This makes it ideal for applications such as power supplies and amplifiers, where the load current fluctuates frequently. The UPJ2A470MPD is robust and reliable, and can operate at an ambient temperature of -55 °C to +105 °C. The UPJ2A470MPD is usually used in the high frequency drive circuit and the direct current power supply circuit.

Advantages and Disadvantages

Aluminum electrolytic capacitors have a number of advantages, including low cost, high capacitance density and long life. It also has a large ripple current carrying capacity and high frequency performance compared to other types of capacitors. However, its main disadvantage is that it has a limited operating temperature range and its capacitance value will drop as the temperature increases.

The UPJ2A470MPD has a solid structure and is suitable for a wide range of applications. It has a high temperature coefficient of capacitance and a long life. However, its current carrying capability is relatively low compared to other types of capacitors.

Conclusion

Aluminum electrolytic capacitors are widely used in a variety of applications, including decoupling and filtering. The UPJ2A470MPD is one of the most common types of aluminum electrolytic capacitors, with a range of applications and a range of advantages and disadvantages. It has a high capacitance, a long life and a high capacitance density, but has a limited current carrying capability. The UPJ2A470MPD is robust and reliable, and can operate at an ambient temperature of -55 °C to 105 °C.

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