EKZH250ETD821MJ20S

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Aluminum electrolytic capacitors are commonly used electronic components found on printed circuit boards. They are used for many different applications, including filtering, smoothing, noise reduction, and power supply conditioning. The ‘EKZH250ETD821MJ20S’ is an example of an aluminum electrolytic capacitor. It is a tandem type capacitor with an 85 °C nominal temperature rating. This article will discuss the application field for this component and will explain its working principle.

The EKZH250ETD821MJ20S is a high-capacity aluminum electrolytic capacitor designed for use in high frequency applications. It has a large capacitance (250 µF) with a low ESR of 0.020 Ω and is suited for DC/DC converters, switch mode power supplies, and power factor correction circuits. This capacitor has an operating voltage of 250 V DC and a ripple current of 3.8 A (at 85 °C).

Aluminum electrolytic capacitors are classified as ‘tantalum’ capacitors due to their structure. They consist of an anode and a cathode, both made of aluminum, separated by an electrolyte layer. The electrolyte acts as a dielectric material with a high electrical resistance, creating the capacitance in the capacitor. The anode and cathode electrodes are plated with a metal oxide dielectric material. This layer increases the capacitance of the capacitor by increasing the surface area of the electrodes.

The working principle of aluminum electrolytic capacitors is based on the concept of polarization. When the capacitor is connected in the circuit, the positive anode will be attracted to the negative cathode by the electrolyte material. This creates a charge imbalance on the electrodes, leading to the creation of the capacitance. This capacitance increases based on the intensity of the charge imbalance and the surface area of the electrodes.

The EKZH250ETD821MJ20S is a high-capacity aluminum electrolytic capacitor designed for use in high frequency applications. It is best suited for applications such as DC/DC converters, switch mode power supplies, and power factor correction circuits. This capacitor offers high performance and reliability due to its large capacitance and low ESR, and its stable electrolyte ensures it can handle high operating temperatures.

In summary, the EKZH250ETD821MJ20S aluminum electrolytic capacitor is an excellent choice for applications requiring high frequency performance and reliability. It has a large capacitance and low ESR, and its electrolyte ensures it can handle high operating temperatures. The working principle of this capacitor is based on the concept of polarization, with the anode and cathode electrodes being polarized by the electrolyte material, creating the capacitance. All of these features make this capacitor suitable for a variety of electrical applications.

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