B41691A7687Q7

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Aluminum electrolytic capacitors (also known as aluminum electrolytics) are polarized capacitors with an anode of aluminum foil combined with a porous etched layer after oxidation forming its oxide layer, with electrolytes as the cathode and topped with a paper separator impregnated with oil. They are the highest capacitance-voltage (CV) capacitors for their size found in electronics and have a robust design that offer a various series of performance parameters tailored to their specified applications.

Definition and Types of Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors, like other types of capacitors, work as a storage device to store charges and carry electric current over a period of time. The aluminum electrolytic capacitor\'s capacity to store energy is typically measured in “farads”. It is a device composed of two charge-carrying electrodes (an aluminum foil and a liquid electrolyte) and a dielectric material (oxide film). The aluminum electrolytic capacitor is known as a polarized capacitor because when using it, the polarity of the voltage must be observed to prevent the device from breaking down.

There are three main types of aluminum electrolytic capacitors: Electrolytic (non-solid), Wet Tantalum and Miniature Aluminum Electrolytic. Electrolytic caps are non-solid and are composed of an aluminum oxide electrode, metalized films and a liquid electrolyte. These devices are normally manufactured from aluminum and tantalum components and have a wide range of applications. Wet tantalum capacitors have a special electrolytic environment that allows for a higher charge carrying efficiency. While miniaturized versions of aluminum electrolytic capacitors have been available for some time, they are popular for their small size and cost-effectiveness.

B41691A7687Q7 Application Field and Working Principle

The B41691A7687Q7 is a miniature aluminum electrolytic capacitor produced by Wurth Electronics. This device is widely used in medical and computer motherboards, consumer electronic products and other high precision applications. It is designed to deliver efficient energy storage in a highly compact form factor and features polarity reversal protection, low ESR, and short-circuit protection.

The working principle of the B41691A7687Q7 is based on two key properties of aluminum: its conductivity, and its dielectric properties. When a voltage is applied to the two aluminum plates (anode and cathode) of the device, the aluminum anode forms an oxide layer which acts as a dielectric. This permits charge to accumulate, creating a larger electric field, and forming an electric charge that can hold electricity. The amount of charge that is stored is determined by the size of the capacitor and the amount of voltage applied to it.

The B41691A7687Q7 also offers polarity reversal protection, which helps protect the device from damage due to reversed polarity. When the voltage is applied to the device in the wrong direction, the oxide layer on the anode acts as an open circuit, allowing no current to flow, and thus protecting the capacitor from potential damage.

The B41691A7687Q7 is designed to provide reliable performance in a wide range of applications, and is suitable for use in computer motherboards, medical boards, and other consumer electronic products. It is a great choice for applications requiring high capacitance values in a small form factor. The device is rated for a temperature range of -55C to +105C, and its capacitance range is from 2uF to 10uF.

Conclusion

Aluminum electrolytic capacitors are a type of polarized capacitor used in electronic applications, offering high capacitance values and low ESR. The B41691A7687Q7 is a miniature aluminum electrolytic capacitor designed for use in a wide range of applications. It offers reliable performance and polarity reversal protection in a small form factor. The device is rated for a temperature range of -55C to +105C, and its capacitance range is from 2uF to 10uF.

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