PEH169GA5100QU2

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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are a type of capacitor that works using the principle of electrolysis with an electrolyte held between two layers of aluminum foil. They are used in a wide variety of applications, from power supplies and energy storage solutions to automotive and consumer electronics applications. This article focuses on PEH169GA5100QU2, an electrolytic capacitor variant manufactured by Panasonic, and its application field and working principle.

Working Principle: The main components of an electrolytic capacitor are two aluminum foils, an electrolyte, and a separator. One of the aluminum foils, called the “anode”, is coated with a layer of an oxide insulator, while the other, called the “cathode” is coated with a conductive material. The two aluminum foils are suspended in an electrolyte, usually a dilute solution of etched aluminum hydroxide, to create a capacitor. An electric current is passed through the electrolyte, causing the oxide on the anode foil to dissolve and form an oxide film on the opposite cathode foil. This oxide film, combined with the second layer of aluminum foil, creates a very thin layer of insulating material called the “dielectric”. The dielectric layer is what allows the capacitor to store and release energy when the current is applied or removed.

Application Field: PEH169GA5100QU2 is an electrolytic capacitor that uses an etched aluminum hydroxide solution as an electrolyte. It is rated for a voltage range of 7.3V to 8.0V and has a capacitance of 5,100µF. This electrolytic capacitor is well suited for applications where a high capacitance and low voltage are required, such as in power supplies, energy storage solutions, automotive, and consumer electronics.

The two layers of aluminum foil, combined with the electrolyte, create a strong, reliable connection that can withstand a wide range of temperatures. The capacitance also remains consistent over a wide range of frequencies, which makes it an ideal choice for high frequency applications.

This capacitor\'s construction also helps enhance the stability and reliability of the system it is being used in. The etching process creates a more uniform electrical resistance across the entire surface of the capacitor, allowing for better heat dissipation and greater longevity. The aluminum oxide film can also help protect the capacitor from damage caused by temperature extremes, including overvoltage or overcurrent.

PEH169GA5100QU2 can be used in a variety of applications, from power supplies and energy storage solutions to automotive and consumer electronics applications. It is also well suited for applications where a high capacitance and low voltage are required.

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