7111-RC Filters

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Common Mode Chokes are devices used to prevent high frequency common mode signals from entering or leaving a system. The 7111-RC application field and working principle is explained in this article.

The 7111-RC Common Mode Choke is designed for applications where currents of up to 200A need to be blocked in both directions between AC and DC. It prevents interference between power supply lines with respect to ground, DC loads, or floating circuits. The 7111-RC uses ferrite for the core material to minimize losses due to eddy current and provide an improved common mode impedance. This makes them suitable for suppressing high frequency noise in applications such as medical equipment, communication systems, or in the consumer electronics market.

The 7111-RC works by using the inductance of the component to resist changes in current. This means that when AC or DC signals attempt to pass through the component, the inductance attempts to keep the current constant, blocking it from passing through. As the frequency increases, the impedance of the component also increases, leading to even more current being blocked. The 7111-RC is also designed to be able to handle up to 200A of current, making it more effective than standard inductors as it can handle the higher currents.

The 7111-RC also has a low tolerance of variation of inductance when exposed to temperatures ranging from -20°C to +100°C. This is important as any variation in the performance of the device can lead to a decrease in its effectiveness. The component also uses multi-strand copper wires for the windings, creating a low DC resistance, improving performance and reducing the inductor losses. This feature is also important for applications where high levels of current have to be blocked.

Furthermore, the 7111-RC is designed to be robust and has a high level of reliability. It can operate in hostile environments and is able to withstand temperatures up to 125°C as well as mechanical shocks and vibrations. Its body is made from PBT fiber reinforced Nylon-GF on the external and an iron powder core on the inside. This makes the component able to deliver superior performance over extended periods of time.

In conclusion, the 7111-RC Common Mode Choke is the ideal component for applications requiring high-current blocking and high levels of suppression of common mode noise. It is robust, reliable and has excellent temperature tolerance, making it well suited for use in a variety of industries. It provides excellent performance and is available in a range of sizes and packages, making it suitable for a wide range of applications.

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