DKFP-0276-0403L

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Common mode chokes (CMCs) are used to reduce the effects of noise currents caused by large magnetically-coupled currents on signal and control lines in power electronics. They consist of a series of coils wound onto a single core, with each winding connected either in series or parallel. They are designed to reject currents caused by excessive magnetic coupling, while allowing minimal signal coupling. The DKFP-0276-0403L is a CMC that is specifically designed for use in power electronics applications.

The DKFP-0276-0403L has a high-power rating of up to 60A, making it suitable for use in a wide range of applications. It features an extended temperature range for up to +120°C as standard, and can also operate down to -40°C with a low temperature version. It is rated for an operating frequency of up to 25 kHz - providing fast and effective noise suppression. The device is also highly resistant to vibration, making it useful in applications where the environment is subject to strong vibrations. Additionally, the CMC has a high-impedance ratio (HIR) of up to 20.7 kΩ at 25 kHz, providing a maximum attenuation of up to 50 dB. This means that it is effective at reducing the effect of common-mode currents, and is capable of attenuating even low-frequency noise.

The DKFP-0276-0403L has a wide range of applications in the power electronics industry. It can be used to suppress electromagnetic interference (EMI) and reduce power line noise, as well as to prevent the transfer of large current spikes. It is ideal for use in motor drives, inverters, converters, and voltage and current sensors, and can also be used in automotive and aerospace applications. Additionally, it can be used in any system where there is a need for electrical isolation or signal integrity.

In terms of its working principle, the DKFP-0276-0403L uses an inductive filter in combination with a Faraday shield to reduce not only common-mode noise, but also differential-mode noise. The Faraday shield covers the entire device, and it is divided into two parts - an inner element, which carries the signal leads, and an outer element, which shields the inner element from external noise. The device also has a ferrite core to reduce the possible signal leakage. The effect of the Faraday shield and the ferrite core is to act as a barrier between the noise and the signal being passed through the device.

The DKFP-0276-0403L is an effective and reliable CMC for use in a wide variety of power electronics applications. It has a high power rating and can operate over a wide temperature range, making it suitable for use in harsh environments. Additionally, its wide HIR and high attenuation capability make it suitable for reducing both common-mode and differential-mode noise. With its combination of Faraday shielding and inductive filtering, it provides excellent noise reduction performance, and is an ideal choice for applications requiring strong electrical isolation and signal integrity.

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