SEK101M350ST

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Aluminum Electrolytic Capacitors

Capacitors are important components of an electronic circuit which store electric charge and energy. Aluminum electrolytic capacitors have an anode or a positive plate made of aluminum, separated from the cathode or the negative plate by an electrolyte which provides the major capacitance. Due to their larger capacitance, aluminum electrolytic capacitors are used in higher frequency and lower voltage applications than most other type of capacitors.

SEK101M350ST aluminum electrolytic capacitors are widely used in power applications due to their high capacitance and long life. They have a polarized construction that requires proper orientation when installing the capacitor to an AC circuit. The + positive terminal is encased within an insulated cylinder and marked with the symbol “+”. The – negative terminal of the capacitor is also encased in an insulated cylinder and marked by a negative (-) symbol. This construction ensures that the capacitor shells stay completely insulated from the outside environment.

The SEK101M350ST aluminum electrolytic capacitors have a capacitance rating of 101uF with 350V DC rated voltage and a temperature range of -40 to +85°C. They are made of an aluminum foil electrolyte and have radial leaded anodes, making them suitable for high ripple applications and high frequencies. These capacitors are ideal for use in regulated power supplies, switching power supplies, DC-DC converters, inverters, and filters.

The working principle of the SEK101M350ST aluminum electrolytic capacitors is based on a chemical reaction between the anode and cathode in the presence of an electrolyte. When a voltage is applied, ions in the electrolyte are attracted to the anode, forming a thin layer of oxide film. This film acts as the dielectric and stores the charge in the capacitor until the voltage is removed.

The capacitance of the SEK101M350ST aluminum electrolytic capacitors is determined by the area of the anode and cathode, the distance between them, and the type of electrolyte used. The capacitance of the capacitor can be increased by increasing any of these parameters while the voltage rating remains constant. Additionally, increasing the temperature of the electrolyte or decreasing the amount of oxidization will also increase the capacitance of the capacitor.

The SEK101M350ST aluminum electrolytic capacitors are robust, reliable and offer high performance levels in a wide range of power applications. They are cheaper than other types of capacitors and have excellent longevity under varied environmental conditions. Since they are polarized, they need to be connected correctly to the circuit and must be replaced at the end of their lifetime. With proper and careful handling, they can last for many years and deliver optimum performance.

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