CMX1616Z162B-10

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Common Mode Chokes (CMC) are widely employed in order to block differential mode noise on sensitive circuits and components by utilizing inductive coupling. They are available in various designs for a wide range of applications. Typically, they are ideal for interference suppression with respect to high frequency, low voltage circuits.

One type of common mode choke is the CMX1616Z162B-10. It is a high current, single-phase, low inductance device, designed to provide minimal signal attenuation in applications where high current demands are common. It is suitable for EMI suppression in switching power supplies, motor controls, and various other switching applications.

The CMX1616Z162B-10 is designed to collect and redirect common-mode currents of 10 Amp rms and above, while still allowing a normal signal to pass through it’s inductor. It has a low impedance for differential mode signals, while providing the required safety and performance constraints over a wide bandwidth. To achieve this, the device is constructed from a ferrite core, wherein ferric oxide particles are grouped into tightly wound, overlapping layers, in order to increase permeability and reduce hysteresis losses. Furthermore, the device features an extended temperature range from -40°C to + 125°C.

The CMX1616Z162B-10 has a variety of application fields. The most common are automotive applications, which demand robustness, as well as reliable performance at a wide temperature range. Additionally, many telecommunications and industrial control systems utilize the CMX1616Z162B-10 for its outstanding signal attenuation properties.

The working principle of the CMX1616Z162B-10 is based on the inductive coupling of a differential (current) mode and a common (voltage) mode current. This is achieved by means of electromagnetic induction, wherein the resulting electromagnetic flux induces currents in the same direction. Thus, the inductor acts as a transformer, which blocks differential currents, while allowing common-mode currents to flow freely. In practice, any differential-mode noise is absorbed and redirected via the common-mode choke.

In conclusion, the CMX1616Z162B-10 is a high current, single-phase, low inductance common mode choke that exhibits superior performance in applications such as telecommunications, automotive and industrial control systems. The principle of operation is based on the phenomenon of electromagnetic induction, wherein the resulting electromagnetic flux is channeled to block differential-mode noise, while allowing uninterrupted common-mode currents to pass through. In this way, the CMX1616Z162B-10 offers outstanding EMI protection and reliable performance in a wide range of temperature and current demands.

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