400SAW120MEFC18X40

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Aluminum electrolytic capacitors are passive electronic components that store energy in an electric field created by the active electrolyte. They are widely used for power conditioning in both digital and analog circuits. The 400SAW120MEFC18X40 belongs to the aluminum electrolytic capacitor category and it has several advantageous features.The 400SAW120MEFC18X40 consists of an aluminum case filled with the axially-leaded anode foils and another lead coupled with the capacitor. The capacitor is insulated from the case by a dielectric created by an electrolyte solution within it. This capacitor typically has a capacitance rating of 0.18 μF, a temperature range of -40 °C to +85 °C, and a voltage rating of 400 volts. It has a high self-healing character, low impedance, and a low cost-per-unit.The main applications of the 400SAW120MEFC18X40 aluminum electrolytic capacitors are in the high-frequency and large-signal electronic equipment, such as radio and television receivers, digital tools and amplifiers. These devices help to prevent interference and noise caused by quick-variation signals. Moreover, they help to filter out noise present in the circuit power and also suitable to audio and radio-frequency circuits.The working principle of the 400SAW120MEFC18X40 aluminum electrolytic capacitors is based on the double-layer capacitance theory. The capacitor foils and lead are submerged into the conductive electrolyte solution in a cylindrical case. The positive ions of the electrolyte will be attracted to the negative plate and held there, forming a “pseudo-capacitor”. When a voltage is applied across the two plates, the positive ions migrate towards the positive plate, pushing the negative ions away and creating an electric field, thus allowing for the energy storage.In conclusion, the 400SAW120MEFC18X40 aluminum electrolytic capacitors are highly reliable and efficient devices which serve to filter out noise and interference as well as maintain an even power supply to electrical equipment. With their cost-efficient features, ease of installation and maintenance, these capacitors help to keep the best performance of the circuits.

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