L up and R down in 0402 inductors

The 0402DF series of chip inductors offers higher inductance and significantly lower resistance compared with previous 0402-sized inductors, claims maker Coilcraft.

There are 25 values from 20nH to 3.3µH (+/- 5%).

As an example of resistance, the 220nH value is 240mΩ – 55% lower than the same value in Coilcraft’s 0402AF sSeries “making it optimised for use as a harmonic filter element for NFC applications”, said the firm.

Other proposed applications are as elements in band-stop filters, low-pass filters, one-pole filters, an RF choke in cellular bands, or for ground-to-ground isolation.

The cores are ferrite, and terminations are RoHS 6/6-compliant matte tin over nickel over silver-palladium-glass frit.

 

steve bush

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