Wirewound Ferrite Beads for Low-Pass Filtering

Coilcraft offers a broad range of wirewound ferrite beads in standard package sizes from 0201 (0603) to 1812 (4532). Superior attenuation and frequency performance enable smaller solution sizes compared to traditional thick-film chip ferrite beads.

Ferrite beads are used as low-pass filters to eliminate high frequency noise while allowing low frequency signals or dc current to pass through a circuit.

Coilcraft wirewound ferrite beads feature a ferrite construction and heavy gauge wire for high current handling. They provide extremely low DCR while maintaining high filtering impedance across a wide bandwidth – up to GHz band.

These features enhance the performance of the choke circuit while potentially reducing board space by replacing a larger chip ferrite bead with an equivalent, or higher-performing wirewound ferrite bead.

Coilcraft offers 11 families of wirewound ferrite beads, all of which are RoHS-compliant and halogen free. Three models (the 0603LS, 0805LS and 1008LS) are qualified to AEC-Q200 Grade 3 standards (-40° to +85°C ambient), making them suitable for automotive and other harsh-environment applications.

As with all Coilcraft parts, free evaluation samples of all Coilcraft wirewound ferrite beads are available.