SEK100M025ST

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Aluminum electrolytic capacitors (also called electrolytic capacitors or simply electrolytics) are polarized capacitors which use an electrolyte to achieve a larger capacitance than what would be obtained with a dielectric in a non-polarized design. These capacitors consist of two electrodes that are separated by an electrolyte. One electrode, known as the anode, is made from aluminum, and the other electrode is known as the cathode and is formed from a layer of aluminum oxide. Currently, the most common type of electrolytic capacitor is the aluminum electrolytic capacitor due to its low cost, high capacitance and long lifetime.

SEK100M025ST Aluminum Electrolytic Capacitor Application Field and Working Principle

SEK100M025ST aluminum electrolytic capacitor is mainly used on civil power, communication, security device, equipment, low frequency products, big distortion outcome product and so on. The capacitor has polarized aluminum electrolytic capacitor with the specification of 10uF~1800uF and the rated voltage of 6.3V ~ 450V. The temperature range of the capacitor is between -25℃ to 125℃ and the highest temperature coefficient is 200ppm/℃.

The working principle of an aluminum electrolytic capacitor is based on the physical principle of Faraday’s law of electrolysis. This law states that when an electric current passes through an electrolyte, chemical reactions occur which in turn produce a chemical compound. The compound that is formed, in this case an oxide layer, acts as an electrical insulator between the two electrodes of the capacitor. This insulating layer is what gives an electrolytic capacitor its high capacitance.

In terms of electrical properties, SEK100M025ST aluminum electrolytic capacitors have high operating temperature, high ripple current, low temperature coefficient and low impedance. The temperature coefficient of this type of capacitor is very low, typically around 50ppm/°C less than other aluminum electrolytic capacitors. The disadvantages associated with this capacitor are that it does not have a lower ESR (Equivalent Series Resistance) than the other aluminum electrolytic capacitors, and it has a limited voltage range. Also, the capacitance of these capacitors tends to decrease with increased temperature.

The SEK100M025ST aluminum electrolytic capacitors are generally applicable to the fields of communication, computer, home appliances, electronic toys, electronic car, instruments and meters, etc. Generally speaking, this type of capacitor can be used in various examples such as switch mode power supply, UPS, servo system and inverter circuit, etc. When used in automotive applications, this capacitor is generally used in electric fuel pumps, Diesel Injector Driver Modules, Ignition Coil Drives, Engine Control Modules, Antenna Amplifier and various other electric controllers.

In conclusion, SEK100M025ST aluminum electrolytic capacitor is a great choice for a variety of electronics applications. It is particularly well-suited for automotive applications due to its low temperature coefficient, high-operating temperature and low ESR performance. Furthermore, its relatively low price compared to other types of capacitors make it an excellent cost-effective option for many projects.

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