SCF20-05-1100 Filters

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Common Mode Chokes (CMCs) are electronic components used to suppress the effects of electromagnetic interference (EMI) in electrically noisy environments. They are commonly used in cable systems, power supplies, and consumer audio/video equipment. The SCF20-05-1100 CMC is a high-performance model that can handle higher voltage and power applications than its predecessors.

The SCF20-05-1100 CMC consists of a winding constructed from two wire pairs, each wire carrying the same electrical current. During steady-state operation, both the primary coil (the coil that is energized) and secondary coil (the coil that is not energized) carry the same current, resulting in a resistive impedance at the primary and a nearly equal inductive impedance at the secondary. By this mechanism, a CMC effectively prevents current from taking the path of least resistance and leaking into the secondary winding. This prevents electromagnetic interference from escaping from the primary and secondary windings, thus ensuring a clean and interference-free environment.

When the SCF20- 05-1100 is used in cable systems, power supplies, and audio/video applications, it serves to prevent EMI generation and crosstalk as well as reduce the propagation of EMI to other objects. Additionally, its inductive nature eliminates the need for additional capacitors and other components, saving cost and space for the engineers. As the SCF20-05-1100 CMC is a RoHS-compliant device, it is suitable for use in many popular commercial and industrial applications.

The SCF20-05-1100 CMC works on the principle of Electromagnetic Induction. As the primary winding carries a current, an electromagnetic field is created around it, which in turn induces an opposing electromagnetic field in the secondary winding. This opposing field opposes any current that tries to flow through the secondary winding, thus preventing EMI from propagating into the surrounding environment. By creating this inductive impedance in both primary and secondary windings, the CMC effectively suppresses EMI from escaping and causing interference.

The SCF20-05-1100 CMC is a highly efficient, low profile device that is perfect for applications requiring high levels of EMI suppression and crosstalk reduction. It is thermally and mechanically robust and offers reliable performance in a wide range of operating temperatures. By providing reliable shielding and protection to power supplies, cable systems, and other electronic systems, the SCF20-05-1100 CMC provides a simple and cost-effective solution for controlling EMI in all types of electronic designs.

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