B41888C3687M000

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Aluminum electrolytic capacitors are electrical components used in electronics applications to store an electric charge, much like a battery. The most common type of electrolytic capacitor is the polarized capacitor, which generally features an anode and a cathode separated by an electrolyte. The letter “C” in the model number B41888C3687M000 indicates this component is a capacitor. The B41888C3687M000 is an aluminum electrolytic capacitor.

Aluminum electrolytic capacitors come in numerous styles and shapes, such as axial and radial lead, dipped and snap-in, screw, and surface mount. The number 3,687 and the letter “M” in the model number B41888C3687M000 correspond to the product\'s dimensions and features. Specifically, the 3,687 can be interpreted as a value of 3.687 inches for both the height and diameter of this aluminum electrolytic capacitor. Additionally, the letter “M” indicates these components are a molded version and are designed with radial leads.

Aluminum electrolytic capacitors are often used in a wide array of commercial, industrial, and consumer electronics applications. These applications range from computer systems, including servers and workstations, to audio equipment, home electronics, vehicles, and communications systems. Notably, the B41888C3687M000 aluminum electrolytic capacitor is typically used in critical DC power supply circuits in consumer electronics. The wide-range operating temperature, alongside its good stability and long-term reliability, make it a great choice for these circuits.

The working principle of an aluminum electrolytic capacitor is relatively simple. Current is conducted through the electrolyte, which is typically a type of gel. This gel divides the capacitor into an anode and a cathode. When a voltage is applied across the capacitor, electrons are attracted to the cathode, creating a surplus of electrons. Consequently, there is an imbalance of charge between the anode and the cathode, which produces an electric field. This electric field is proportional to the applied voltage, causing a surge of electrons to flow into the anode. This flow of electrons is what essentially stores electrical energy in the capacitor.

Furthermore, the double-sided aluminum-oxide layer acts as an insulator, preventing current flow from one side of the capacitor to the other. As the capacitor accumulates more charge, known as charge absorption, the capacitive reactance increases and the capacitance decreases. When the voltage is increased, the capacitive reactance decreases, and the capacitance increases. This is known as charge recharging, or capacitance restoring. The capacitance restoration is reversible and occurs in a fraction of a second. The dielectric material used in aluminum electrolytic capacitors is very hygroscopic, meaning it absorbs moisture quickly. Because of this characteristic, the capacitors must be operated within a specified temperature range in order to achieve acceptable life expectancy.

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