CPFC805NP-100M05 Filters

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Common Mode Chokes (CMCs) are electronic components that are designed to reduce radiated emissions. CMCs act as filters in the audio signal chain and are used to reject unwanted noise from signals in electronic, industrial, consumer, and automotive applications. The CPFC805NP-100M05 is a CMC manufactured by PMU USA that is ideal for suppressing common mode noise in high-speed digital signal lines where high signal bandwidth and low common-mode noise is desired.

The CPFC805NP-100M05 is particularly useful for audio application because it can effectively reduce high-frequency noise generated in digital audio signal lines. It is constructed with common mode coils wound in parallel with high-grade ferrite cores, and is rated to handle currents up to 100 mA. It offers an excellent signal to noise ratio and a wide frequency response ranging from 10 kHz to 450 MHz.

It is especially suitable for applications with high-frequency signal requirements such as cable boxes, satellite systems, digital audio devices, and medical equipment. The CMC is simple to implement and usually requires only two components: the chokes and a bypass capacitor. The choke reduces common mode noise currents, while the capacitor provides a low impedance return path for differential signals.

In operation, the CPFC805NP-100M05 acts to restrict the common-mode current to the ground node and attenuate noise. This is achieved by utilizing the split-core construction that contains two separate coil windings that are magnetically coupled but electrically isolated. The chokes also act to help protect sensitive digital circuit components and prevent damage or destruction from high current transients.

The CPFC805NP-100M05 is designed to provide a variety of advantages in audio applications. It offers low insertion loss, low distortion, low temperature coefficient, and high attenuation characteristics. Additionally, the CMC is available in standard and custom packages for a variety of signal-to-noise requirements. It is also RoHS-compliant and 100% lead-free, making it an eco-friendly choice for any industrial or consumer electronics application.

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