F910E477MNC

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Tantalum Capacitors

Tantalum capacitors (also known as tantalum electrolytic capacitors) are a type of electrolytic capacitor which utilises tantalum oxide and tantalum powder as its anode and cathode materials, respectively. Due to its solid electrolytic construction, it is ideal for a wide range of applications covering a wide frequency range including low, intermediate, intermediate-high, and high frequency fields.

F910E477MNC Application Field and Working Principle

The F910E477MNC is a commonly used capacitor developed by KEMET Corporation. It is a solid tantalum capacitor, having a capacitance rating of 4.7µF, and boasting a very low ESR of 0.9 mΩ. The F910E477MNC finds wide application in low- to high-frequency power supply applications, such as power converters, DC-to-DC converters, and switching power supplies. It is also suitable for high-temperature environments, and has a maximum operating temperature rating of up to 125°C. As such, it is often used in engine controllers, laptops, and other such devices. Furthermore, the F910E477MNC offers a wide input voltage range of 2.2 V to 31 V.

The F910E477MNC is a surface-mount tantalum capacitor, and consists of two parts: an anode and a cathode. The anode is generally comprised of an aluminum core, while the cathode is made out of a mixture of tantalum oxide and tantalum powder. The anode and cathode are formed into a closed sandwich structure, and then a dielectric material (such as tantalum oxide) is sprayed onto it. From there, the device is sealed and dried, and the whole process is done in a vacuum environment, to ensure the safety of the capacitor. Once the capacitor is ready, it is connected to its leads, and the polarity is determined in this way.

Tantalum capacitors, like the F910E477MNC, work by using the heat generated from the anode to evaporate the oxide on its surface, which lowers the capacitance of the device. As the anode and cathode come into contact with one another, electricity is conducted from the cathode to the anode, thereby creating an electrical field. This electrical field acts to reduce the capacitance, making the device act as an ideal low-frequency capacitor. As the frequency increases, this effect becomes more pronounced, and the device begins to behave more like an ideal high-frequency capacitor.

In summary, the F910E477MNC is an ideal capacitor for low- to high-frequency power supply applications, due to its low ESR and high maximum operating temperature rating, and its ability to offer a wide input voltage range. It comprises of an anode made out of an aluminum core, and a cathode made out of a mixture of tantalum oxide and tantalum powder, and operates by using the heat generated from the anode to lower the capacitance of the device. This makes it an ideal choice for power converters, DC-to-DC converters, and switching power supplies.

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