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90uH Magnetic Ring Inductor, also known as High Current Ring Inductor or Common Mode Coil, is a highly specialized passive electronic component. With an inductance value of 90 microhenries (uH), this magnetic ring inductor is designed to handle high - current applications while efficiently suppressing common - mode noise. Its toroidal core, usually made of high - permeability magnetic materials like ferrite, provides a closed - loop magnetic path that minimizes magnetic flux leakage, enhancing energy storage and conversion efficiency. In high - current scenarios, it maintains stable inductance performance, ensuring smooth current flow and reducing power losses. As a common - mode coil, it plays a crucial role in filtering out unwanted common - mode interference signals in power lines and signal transmission cables, improving the electromagnetic compatibility (EMC) of the circuit. This makes it widely applicable in power supplies, motor drives, communication systems, and other electronic equipment, where both high - current handling and effective noise suppression are essential for optimal system operation.