ACM2012E-670-2P-T01 Filters

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Common Mode Chokes

The ACM2012E-670-2P-T01 is an electromagnetic component that belongs to a large family of devices known as Common Mode Chokes (CMCs). These components are designed to reduce common-mode noise in circuits, especially those susceptible to high electricity or radio-frequency interference. CMCs are common in a wide range of low-voltage, medium-voltage, and even high-voltage applications, as well as in the data communication, automotive, and information technology industries.

At the heart of CMC technology is the use of two windings that are wound in a specific configuration to create a magnetic field. This magnetic field induces a current in both the windings, which helps to reduce the amount of noise. To optimise this noise reduction, CMCs feature various core shapes and sizes to create the desired magnetic field.

A typical CMC features a ferrite core, two coupled windings, and a metallic shield that helps reduce the emanation of electrical noise. The windings are separated and connected in opposite directions to ensure that any direct-current reference is cancelled out. This ensures that CMCs can handle both balanced and unbalanced loads.

Besides wound-type CMCs, there are also surface-mount devices that utilise special resistors and capacitors to achieve the desired noise-reduction level. These devices usually come in a tiny package that is easy to integrate into any circuit board layout. Their small size also makes them a popular choice for high-speed digital applications.

The use of CMCs goes beyond noise reduction. They can also provide protection from overvoltage transients. Such protection is important, especially in sensitive electronics applications. The CMC can be configured to limit the inrush current, dissipate heat, and even provide additional inductance in the circuit.

The ACM2012E-670-2P-T01 is a two pole CMC that features a high-performance ferrite core. It is designed to reduce interference by impeding the build-up of common-mode noise, while also protecting circuitry from high-energy transients. The ACM2012E-670-2P-T01 helps ensure trouble-free operation and is suitable for a wide range of low-voltage and medium-voltage applications.

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