LLS2V391MELB

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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors, referred to as aluminum electrolyte capacitors, are one of the most widely used electronic components in the electronics industry. They are composed of an aluminum foil coated with an oxide film and a rolled up tissue paper soaked in a liquid electrolyte, usually ethylene glycol. The oxide film acts as the dielectric (insulator), and the electrolyte as the counter electrode (KC). The oxide film, the electrolyte, and the rolled tissue paper form a double layer capacitor (EDLC). This type of capacitor has high capacitance and is often used as an energy storage device.

The LLS2V391MELB is an aluminum electrolytic capacitor with a rated operating temperature of 85°C and a voltage rating of 25V. It is designed for applications such as computer motherboards, power supplies, circuits, and various electronic devices. The working principle of the LLS2V391MELB is based on the charge/discharge cycle of the double layer capacitor. The capacitor can store electric energy and then release it very quickly. It can be used to supply peak or ripple current in the circuit.

In order to increase the capacitance and the operating life, it is necessary to use the appropriate capacitor for the application. So it’s important to pay attention to the parameters like capacitance, temperature coefficient, maximum working voltage, rated current, dissipation factor, etc. when selecting the capacitor.

In terms of construction, the major difference between the LLS2V391MELB and other aluminum electrolytic capacitors is the size and structure. The LLS2V391MELB is a radial leaded capacitor with small, low profile case. This small size enables the capacitor to be used in high density electronic devices. The LLS2V391MELB also features a wide temperature range and low leakage, making it ideal for applications that require long operating life.

The metalized aluminum foil of the capacitor is the main part of the capacitor, and the aluminum is also etched to form an even film. The thin aluminum oxide film acts as the dielectric in the capacitor and enables the capacitor to store electric energy. The electrolyte acts as the counter electrode, allowing the capacitor to maintain a steady voltage level in the circuit.

The working principle of the LLS2V391MELB can be easily understood with an analogy. When a positive charge is applied to one side of the capacitor, the other side will be filled with negative charge. This charge will be stored inside the capacitor, and it will be released when the applied voltage is the same or lower than the capacitor\'s rated voltage.

In conclusion, the LLS2V391MELB is an aluminum electrolytic capacitor that is suitable for many electronic applications, in particular computer motherboards, power supplies, and circuits. Its unique size and structure make it ideal for high density designs. Its working principle is based on the charge/discharge cycle of the double layer capacitor, and its aluminum foil and oxide film act as the dielectric and counter electrode, respectively. It is important to select the right capacitor for the application by paying attention to all the parameters like capacitance, temperature coefficient, and maximum working voltage.

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