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Filters Eliminate EMI In Data-Line Applications

Feb. 26, 2009

By providing both common- and differential-mode noise attenuation, the PDLF surface-mount electromagnetic-interference (EMI) filters promise to reduce noise by a factor of 32 from 15 to 300 MHz. They boast 300 V rms isolation. The filters come in four-, three-, and two-line as well as 500-mA versions. The four-line PDLF4000L, for example, delivers current to 1000 mA with at least 5 H inductance. The DC resistance (DCR) is as high as 250 mOhms. The high-current version, dubbed the PDLF4500L, has the same specifications except for current capability to 500 mA. The filters have ferrite cores with tin-silver-copper over tin over nickel over phosphor-bronze terminations. P&A: sampling now.

About the Author

Nancy Friedrich | RF Product Marketing Manager for Aerospace Defense, Keysight Technologies

Nancy Friedrich is RF Product Marketing Manager for Aerospace Defense at Keysight Technologies. Nancy Friedrich started a career in engineering media about two decades ago with a stint editing copy and writing news for Electronic Design. A few years later, she began writing full time as technology editor at Wireless Systems Design. In 2005, Nancy was named editor-in-chief of Microwaves & RF, a position she held (along with other positions as group content head) until 2018. Nancy then moved to a position at UBM, where she was editor-in-chief of Design News and content director for tradeshows including DesignCon, ESC, and the Smart Manufacturing shows.