MAL212028221E3

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Aluminum electrolytic capacitors, also known as electrolytic capacitors or solid-state capacitors, are one of the most common types of capacitors used in electronics today. They are classified as either wet or dry capacitors, based on the electrolyte material used in their construction.

The MAL212028221E3 electrolytic capacitor is an aluminum electrolytic capacitor used in a variety of electronic applications. It has the common features of aluminum electrolytics, such as a long life expectancy, low cost and high capacitance per volume. This capacitor has a capacitance of 2200μF and a voltage rating of 28V.

Application Field of MAL212028221E3

The MAL212028221E3 is commonly used in DC-DC converters, power supplies, inverters, and general-purpose electronics applications that require a wide operating temperature range and reliable performance. It can be used in various high power applications such as power supply filtering, AC suppression, and line conditioning. It is also suitable for audio applications, such as loudspeaker crossover networks and signal conditioning.

Working Principle of MAL212028221E3

The MAL212028221E3 works by creating an electrostatic field between two metal plates. One plate is made of aluminum foil and the other plate is made of a metal oxide, such as tantalum. The plates are separated by an electrolyte, which is typically an aqueous solution of potassium hydroxide (KOH). The aluminum foil plate is connected to the negative side of the circuit, and the tantalum plate is connected to the positive side of the circuit.

When a voltage is applied across the plates, the electrolyte ions move toward the aluminum plate, resulting in the formation of a thin layer of aluminum oxide on its surface. The aluminum oxide layer acts as an insulator, preventing current flowing through the plates. This creates a capacitor, and the minimum capacitance of the capacitor can be increased by increasing the area of the metal plates and/or increasing the thickness of the dielectric layer of aluminum oxide.

The MAL212028221E3 has a characteristic "leakage current" that flows through the capacitor, which is the result of imperfect sealing of the electrolyte within the capacitor. This leakage current can reduce the effective capacitance of the component, so it is important to keep the leakage current as low as possible.

Conclusion

The MAL212028221E3 aluminum electrolytic capacitor is a widely-used component in many electronic applications. It has features such as long life expectancy, low cost, and high capacitance per volume, and it can be used in high power applications such as power supply filtering, AC suppression, and line conditioning. The capacitor operates by creating an electrostatic field between two metal plates separated by an electrolyte. The aluminum oxide layer formed on the surface of the aluminum plate acts as an insulator, preventing current flow through the plates. The minimum capacitance of the component can be increased by increasing the area of the metal plates and/or increasing the thickness of the dielectric layer.

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