CMX1616X282B-10

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Common mode chokes, or CM chokes, are devices used in electrical circuits to reduce common-mode noise on a shared, two-wire transmission line. CM chokes generally consist of a coil or transformer wound around a magnetic core, usually constructed of a ferrite material. They are frequently used in communication circuits and electrical networks.

The CMX1616X282B-10 is a common mode choke from Murata Manufacturing Company designed for use in automotive applications. It is a high-saturation, high-current, open-core type choke, offering high common-mode rejection at low electrical frequencies, as well as excellent suppression of high-frequency common noise.

The CMX1616X282B-10 measures 16 mm x 16 mm, making it small enough to fit into compact automotive designs. Its windings are made of temperature-resistant composite wire providing adequate characteristics in automotive environments. The thermal ratings of this choke are suitable for high temperature applications like automotive control units, with an operating temperature range of -40°C to +105°C.

The core of the CMX1616X282B-10 is made of a high-conductivity magnetic alloy, chosen to minimize energy losses and to provide high inductance. This design offers superior common-mode emission reduction of automotive switching noise across a wide range of frequencies from low speed to high speed.

The working principle of the CMX1616X282B-10 is based on a combination of inductance from the core and capacitance from the windings. Inductance provides energy storage while capacitance provides energy separation. Together these two functions create an impedance to common-mode noise, which is then separated from the signal. Additionally, the magnetic field generated by the choke provides faraday shielding that effectively eliminates any common-mode noise.

The CMX1616X282B-10 is primarily used as an EMI suppression filter in automotive control systems. The common-mode choke is used to effectively suppress high-frequency noises generated by modern automotive electronics. It is designed to be employed in wideband, high- speed automotive systems such as ECU, ABS, and TCU modules, as well as other similar applications.

The CMX1616X282B-10 is designed to be used in serial high-speed automotive systems. The frequency range of the choke covers up to 30MHz, making it suitable for a wide variety of applications. It can be used for data transmission between devices in the same application, and is effective in eliminating common-mode signal noise both inside and outside of the device.

In conclusion, the CMX1616X282B-10 is a high-saturation, high-current, open-core common mode choke capable of offering high common-mode rejection at low electrical frequencies while suppressing high-frequency common noise. The choke is specifically designed for automotive applications and is used as an EMI suppression filter to reduce common-mode noise generated by modern automotive electronics. With its wide frequency range of up to 30MHz, it offers superior common-mode noise attenuation capabilities.

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