SEK221M160ST

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Aluminum electrolytic capacitors are passive electronic components used in a wide range of electronic circuits, ranging from power supplies, audio and radio applications, such as radios, stereos, and amplifiers. They are composed of two metal plates separated by an electrolyte solution and are an important component of any electronic device.

SEK221M160ST aluminum electrolytic capacitors are an ultra-low impedance type designed for use in telecom, broadcasting, and server systems. They are characterized by their low equivalent series resistance (ESR) and low current leakage, which make them ideal for applications with a high dynamic load, such as power supplies and motor control.

The SEK221M160ST has an operating voltage of 160V and an operating temperature of -55 to +125°C. It is a non-polarized device and has a wide capacitance range of 27 to 3300µF. The high capacitance values enable the capacitor to support both the start-up and the short-term peak current requirement of an electronic device. This type of capacitor is also ferroelectric, meaning it exhibits very low leakage between the two plates, making it particularly suitable for high-frequency applications.

The SEK221M160ST is designed to meet the requirements of UL369, UL 1950 and TUV compliance. The device is also RoHS compliant, which means it is free of hazardous substances and designed to meet the environmental requirements of the EU Directive 2002/95/EC.

The working principle of an aluminum electrolytic capacitor is simple. When a voltage is applied across the two metal plates, an electric field is created in the electrolyte solution between them. This electric field causes the electrolyte to be polarized, which results in an increased capacitance. The capacitance of the device is directly proportional to the voltage applied, the area of the plates, and the distance between them. The use of extended foil technology helps to ensure the capacitance remains stable over time and within its temperature range.

In summary, the SEK221M160ST aluminum electrolytic capacitor provides excellent performance and reliability in telecom, broadcasting, and server applications. Its low ESR and low current leakage make it the ideal choice for applications with a high dynamic load. The high capacitance values ensure stable operation over a wide temperature range, and it is both RoHS compliant and UL/TUV certified.

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