LGJ2D271MELZ20

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Aluminum Electrolytic Capacitors

An aluminum electrolytic capacitor is an electrical device consisting of two aluminum foils separated by a dielectric material, usually a paper soaked in a liquid electrolyte. This type of capacitor is mainly used to support high-frequency waves in industrial applications.

The LGJ2D271MELZ20 capacitor is an example of an aluminum electrolytic capacitor, specifically designed to be used in a range of critical applications such as telecommunication, automotive, and power systems. It features a maximum operating temperature of 105°C, a non-polar configuration to prevent any polarization-related short circuiting, and a long service life of up to 5000 hours.

Application Field

One of the main uses of the LGJ2D271MELZ20 capacitor is as a battery back-up decoupling capacitor in automotive applications, such as starting and powertrain components. Due to its high-frequency performance and long life, it is preferred to other types of decoupling capacitors such as ceramic, polyester, and paper film capacitors. The LGJ2D271MELZ20 is also used in television and radio receivers, computers and data systems, and audio equipment, where it helps to reduce electromagnetic interference.

Working Principle

The working principle of an aluminum electrolytic capacitor is based on the same principles as those of any other type of capacitor. The two electrodes of an electrolytic capacitor are initially connected to each other, forming a constant current flow between them. When an electrical voltage is applied to the capacitor, the current flow is interrupted and the capacitance of the device increases. This is done by a process known as electrolysis, in which ions from the electrolyte are attracted to the plates and build up a surface layer of oxide insulation. The thickness of the oxide layer is proportional to the amount of current flowing through the device and can be controlled by adjusting the applied voltage.

The LGJ2D271MELZ20 capacitor is designed to operate at a relatively large current in a specific temperature range. As a result, its dielectric has been optimized to improve the charge/discharge behavior at high frequencies. The combination of the high-frequency operation, long life, and low Cost of the LGJ2D271MELZ20 make it an ideal choice for a wide range of applications.

Conclusion

The LGJ2D271MELZ20 is an aluminum electrolytic capacitor specifically designed for high-frequency, long-life applications. It features a non-polar configuration to prevent short circuiting and a wide operating temperature range. Due to its efficient charge/discharge behavior, long life, and low cost, it is widely used in telecommunication, automotive, and power systems.

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