CMT-8105-B

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Common mode chokes (CMCs) are electromagnetic components which are used in both signal and power electronics for signal filtering and noise reduction. They are typically used when separated power and ground lines are not available, when grounding requirements are unclear, or when high frequency noise needs to be suppressed at certain points in the circuit. CMCs are also used as matching elements to prevent the electronic device from being damaged or disturbed by voltage transients or high frequency signals. The CMT-8105-B is a Common Mode Choke (CMC) used in high frequency applications, and is designed to suppress high frequency noise on digital signals.

The CMT-8105-B is an axial-lead, ceramic core type CMC with 10 μH inductance value. It features a resistance to high temperature and has a wide frequency range of 10 kHz to 10 MHz, and supports high current up to 100mA. The device is also able to suppress interferences such as electromagnetic interference (EMI) and radio frequency interference (RFI) effect. Moreover, it also offers excellent differential mode suppression performance for better signal quality. It is highly suitable for applications such as automotive infotainment systems, automotive navigation systems, Cellular base stations, and Wireless charging.

The working principle of the CMT-8105-B is based on the concept of inductive coupling. The inductor, together with the air core and the capacitors, forms a basic filter circuit. In this circuit, the circuit’s differential mode current passes through the pair of inductor-capacitor-air core elements, and is thereby suppressed. In order to better suppress this signal from being coupled to the differential mode line, a differential mode shield is used to reduce the effect that the differential mode current has on the line. Additionally, the CMT-8105-B uses both magnetic and electrical fields to create a strong magnetic flux that provides better EMI and RFI shielding for the desired signal.

In order to maximize the effectiveness of the CMT-8105-B, it should be used in applications that require high levels of EMI and RFI suppression. It is important to properly size the device for the desired application, as too small of an inductor can lead to high frequency noise being passed through. Additionally, the CMT-8105-B should be installed using the proper wiring technique, as this will ensure that the noise is fully suppressed and the signal is not disturbed. It is also important to perform adequate testing to make sure that the CMC is able to handle the desired signal before using it.

In summary, the CMT-8105-B is a high frequency, axial-lead CMC designed for EMI and RFI suppression in digital signal applications. It features a wide frequency range and a high temperature resistance, and can handle up to 100mA of current. The CMT-8105-B works on the principle of inductive coupling and employs a differential mode shield for better noise reduction. It is important to properly size the device and use it in the right applications to maximize its effectiveness. Additionally, it is also important to perform adequate testing to ensure that the desired signal is not disturbed by the noise from the CMC.

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