B82720H0015A028

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Common mode chokes are electronic devices used to prevent unwanted signals from entering into an electronic system. They are primarily found in power conversion circuits, although they can also be found in many other applications. A common mode choke is designed to reduce the amplitude of common mode interference signals that are conducted back and forth between two balanced lines. Common mode chokes are typically used to protect circuits from external electromagnetic fields and to limit the mutual interference between circuits.

The B82720H0015A028 is a common mode choke from EPCOS. It is a miniature size, high-frequency common mode choke designed to limit common-mode interference conducted between two balanced lines. It has a low DC resistance of 0.8 ohm and high impedance of Freq >16MHz. It has applications in telecom and IT networks, base stations and EMC immunity systems. Additionally, it is also suitable for high-speed data applications such as PC-peripherals, data routers and modems.

The B82720H0015A028 consists of a ring-type core of Ferrite material that is filled with a windings of enamelled copper wire. The ferrite ring core is designed so that it creates a high inductance to suppress common-mode interference. The overall inductance for the B82720H0015A028 is 15uH. This component also provides for a very low thermal resistance, giving it a low thermal capacity and no degradation over time.

The working principle of the B82720H0015A028 is quite simple. It is designed to allow the signals that are being conducted between two lines to pass through the ferrite core with minimal attenuation. The ferrite core causes a high inductance which effectively screens out and reduces the magnitude of any common-mode currents that may be on the two lines. As the interference currents move through the windings of the choke, they are induced into the magnetic core. The induced currents in the core will cancel out the unwanted currents in the two lines, thus reducing the interference.

As can be seen, the B82720H0015A028 is a highly effective and reliable common mode choke, suitable for any application where suppression of common-mode interference is necessary. Its miniature size and low thermal capacity make it perfect for any design application where space is at a premium and the component must operate within a specific temperature range.

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