CMF16-393800-B

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Common Mode Chokes

CMF16-393800-B Application Field and Working Principle

Common mode chokes are an effective and widely used form of electromagnetic interference (EMI) attenuation in electronic circuits. They are used in a variety of applications, including signal integrity, power distribution, in-circuit measurement, and cable shielding. They can also be used in a number of industrial and automotive applications to reduce conducted emissions.

The CMF16-393800-B is a common mode choke specifically designed to provide wideband, consistent attenuation across broad frequency ranges. With its high inductance value of 16uH, this choke is used to attenuate high frequency noise and reduce ringing in power distribution applications. It is also suitable for use in cable assemblies and interconnects where wideband EMI attenuation is required.

The CMF16-393800-B consists of two ferrite cores connected with a single strand of 16awg wire. This configuration allows for wideband EMI attenuation without the use of capacitors or resistors, as is common for other filters. The choke is capable of attenuating both common-mode and differential-mode noise, with the specific configuration of two cores providing a broader range of attenuation performance than a single core.

The choke operates on the principle of inductive impedance, wherein high-frequency noise currents flow through the windings of the inductor which increases the impedance of the circuit. The current flow is then restricted by the high impedance and the resulting decrease in current reduces the amount of noise in the circuit. This process is also known as ‘attenuation’.

In the case of the CMF16-393800-B, the noise currents are attenuated across a wide range of frequencies, from 10Hz to over 10MHz. The choke is able to provide very low insertion loss, even at the higher frequency ranges, making it an ideal choice for power distribution and EMI suppression needs. This product is rated for operating temperature range from -40°C to +125°C.

The CMF16-393800-B is a popular choke for power distribution applications due to its consistent, wideband attenuation capability and its high temperature rating. This choke is suitable for use in a variety of applications, such as power distribution, automotive, aerospace, industrial electronics, cable assemblies, and more. Its robust design and wideband attenuation makes it an ideal choice for attenuating EMI in a variety of systems.

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