Nexperia introduces common mode filters with integrated ESD protection

Nexperia has announced the PCMFxUSB3BA, a common mode filter (choke)/ ESD protection combination.

The filter features a differential passband of up to 10GHz 3dB frequency and surge robustness up to 7.5A 8/20µs. It's designed to suppress common mode and single-ended noise while minimizing the impact on the signal integrity of extremely fast data lines.

Developed to meet the requirements of super speed USB applications, the devices provide 1, 2 & 3 line pair protection (Tx +/-, Rx +/-, D +/-) and filtering.

Designed for 10Gbps communications line protection, the devices’ system-level robustness exceeds IEC 61000-4-2 level 4, suiting them for use with sensitive SoCs. The firm claims it also minimizes reflections when compared to a discrete design.

The integration of Nexperia's Treos technology aims to ensure low clamping and high robustness. PCMFxUSB3BA/C extends Nexperia's family of common mode filters (PCMF devices), helping to improve the choice between differential pass-band and common-mode rejection at signal fundamentals and higher harmonics.

Stefan Seider, product manager, Nexperia says "Apart from their capability to reduce EMI, common mode filters with ESD protection are also very popular for their efficiency in protecting sensitive transceivers: They add an impedance to the signal line pair, which is very small for differential signals but shows significant attenuation of common mode noise as well as single-ended transients such as ESD."

The PCMF filters are available in low-inductance WLCSP packages. Devices are footprint-compatible with available ESD-only solutions for fast design changes.