TCM1008Y202

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Common Mode ChokesCommon mode chokes are electrical components used to prevent common mode current from flowing through two wires of a balanced system. The addition of a common mode choke can provide reduced electromagnetic interference (EMI) in electrical systems. Common mode chokes usually consist of two or more distinct windings, where the windings are typically inductors or transformers with magnetic cores. Common mode chokes have two distinct application fields, namely, DC power and signal-level communication applications. TCM1008Y202The TCM1008Y202 is a miniature common mode choke with a ferrite core. At 1.3mA direct current (DC), its inductance is 10.2µH. It has a wide operating temperature range of -40°C to +125°C and a maximum impedance of 35 ohms between 85MHz and 300MHz. The TCM1008Y202 also features an EMI reduction of 40dB min attenuation and 50dB max at frequencies between 10-1000MHz. It is widely used in the automotive, consumer, and industrial markets. Working PrincipleCommon mode chokes use inductors to suppress common mode currents. As the magnitude of the current increases, the inductor produces a stronger magnetic field which in turn induces a magnetic flux, commonly referred to as back-EMF. This back-EMF opposes the flow of the current, thus reducing the amount of current that can flow. Common mode chokes can also be used to filter out various frequencies of high-frequency noise in a communication system. This is done by winding the inductors tightly around a magnetic core. As the frequency of the noise increases, the reactance of the inductor also increases, thus reducing the energy of electromagnetic waves that would otherwise interfere with the communication system. ConclusionCommon mode chokes are versatile components used to reduce electromagnetic interference and filter out high-frequency noise in electrical systems. The TCM1008Y202 is a miniature common mode choke with a ferrite core and is widely used in the automotive, consumer, and industrial markets. It has wide operating temperature range and offers an EMI reduction of 40dB min attenuation and 50dB max. The working principle of common mode chokes is based on the back-EMF produced by the inductors.

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