LKX2E391MESZ40

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Aluminum electrolytic capacitors, also known as "electrolytic capacitors," are a type of capacitor that uses an electrolyte to band two aluminum foils together, forming two electrodes. The LKX2E391MESZ40 is a type of aluminum electrolytic capacitor that is often used in power supplies, audio equipment, and automotive electronic applications. In this article, we will explore the LKX2E391MESZ40\'s application field and working principle.

The LKX2E391MESZ40 is a type of surface mount (SMD) aluminum electrolytic capacitor rated at 45V and 1.2μF. Because of its small size and high capacitance, it is typically used as a bypass capacitor in high-frequency switching power supplies, automotive power supplies, and audio equipment. Its small size makes it ideal for applications where space is a premium, such as in modern devices with less room for components.

The LKX2E391MESZ40 has a voltage rating of 45V and can operate up to 85°C. It is rated for a 10-year life span with less than 20% loss of capacitance during its lifetime. Its operating temperature range is -40°C to +85°C, which makes it suitable for use in a variety of environments. Its ESR (equivalent series resistance) is low, making it ideal for applications requiring low power dissipation.

The working principle of an aluminum electrolytic capacitor is based on the attraction between two opposite metals, the anode and cathode. The anode plate is made of aluminum foil, on which a layer of porous oxide is formed when an electric current is passed through. The oxide acts as an insulator between the electrical conductors, blocking the current. The cathode is made of electrolyte, an electrolytic liquid containing positive and negative ions. An electric current flows between the two when a voltage is applied, allowing the capacitor to store electrical energy.

The LKX2E391MESZ40 features a screw-terminal design, allowing for easy assembly and connection. It has a built-in thermal relief diode to protect against thermal runaways and reverse current. The capacitor is also compact, with a maximum height of 2.3mm and a maximum width of 8.9mm. It is RoHS compliant and UL recognized, making it a safe and reliable choice for a wide variety of applications.

In summary, the LKX2E391MESZ40 is a small, surface-mount aluminum electrolytic capacitor rated at 45V and 1.2μF. It is a reliable and efficent choice for high-frequency switching supplies, automotive power supplies, and audio applications. Its operation is based on the attraction between two opposite metals, the anode and cathode, with an oxide layer insulating the two. The capacitor is compact, with a maximum height of 2.3mm and a maximum width of 8.9mm, and is RoHS compliant and UL recognized.

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