CMT-02302

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Common Mode Chokes (CMCs) are passive high frequency electrical components used to reduce electric noise in power lines. CMT-02302 is one of the CMC components that has wide application in various areas due to its very low insertion loss and high suppressing capability. This article will discuss the application fields and working principle of CMT-02302.

CMT-02302 is advantageous in many applications because it is a high performance component. It can reduce the channel-to-channel crosstalk that is common in high speed signal communications networks and is also used to reduce electromagnetic interference (EMI) for product certifications like the UL 60601-1 medical standard. Its wide impedance range of 6.2 to 370 ohms over the 0.1 to 1 GHz frequency range make it suitable for crosstalk suppression and EMI filtering. CMT-02302 is also used in multi-gigabit systems such as 10 Gigabit Ethernet, PCI Express, Serial Attached SCSI, InfiniBand and Fibre Channel.

The structure of the CMT-02302 is composed of two ungapped ferrite cores, one on each side of the windings. It differs from most CMCs because it has a double enclosure housing with a thermally conductive, abrasion-resistant polymer overmold. This protective layer prevents electrical radiation, dust, and other impurities from entering the CMC from the outside environment, while maintaining flexibility in the wiring. The wide temperature range of -55 to 105 degrees Celsius also makes CMT-02302 suitable for various high temperature applications.

In terms of working principle, CMT-02302 is a double shielded, high frequency Common Mode Choke (CMC). It consists of two identical, mutually independent common mode inductors, connected in parallel. Its function is to absorb and attenuate the common mode electromagnetic interference (EMI) that flows in or out of the shielded electrical wiring. The dual shielded design dampens both the EMI field enclosed within the enclosure and the EMI field emanating from the enclosure. This allows the CMT-02302 to reject both the differential and common mode EMI signals effectively.

Furthermore, the CMT-02302 is also capable of providing protection against high peak voltage transients. This is accomplished by the peak current limiting feature, which limits the peak current that can flow through the CMC. This helps to prevent damage to the components connected to it. Additionally, the peak current and thermal limit is designed to meet the UL 60601-1 Medical Standard for patient-exposed applications.

Finally, CMT-02302 is designed to be compact and lightweight, making it easy to integrate into existing systems. This makes the CMT-02302 a great choice for high speed signal communications networks, EMI suppression, and medical safety applications. In conclusion, CMT-02302 is an excellent choice for various application fields because of its low insertion loss, high suppressing capability, peak current limiting feature, and wide temperature range.

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