Developed for use in mobile devices and cellular infrastructure equipment,Coilcraft‘s new 0402DF Series chip inductors offer higher inductance values and significantly lower dc resistance than other 0402-sized inductors, making them well-suited for RF choke and filtering applications. 0402DF SeriesThe 0402DF Series is offered in 25 inductance values ranging from 20 to 3300 nH, with a 5% tolerance for all values.
It claims the lowest dc resistance currently available in a 0402 package. For example, the DCR of the 220 nH value is 0.240 Ohms – 55% lower than the same value in Coilcraft’s 0402AF Series – making it fully-optimized for use as a harmonic filter element for NFC applications.
0402DF Series inductors can also be used as a filter element in bandstop and low pass filters, a one-pole filter or RF choke in cellular bands, and for ground-to-ground isolation. They feature a ferrite construction for high current handling and RoHS 6/6-compliant matte tin over nickel over silver-palladium-glass frit terminations. Like all Coilcraft products, complete technical specifications and free evaluation samples of the 0402DF Series are available.
source: http://www.powerpulse.net/story.php?storyID=32760
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