Coilcraft offers a broad range of wirewound ferrite beads in standard package sizes from 0201 (0603) to 1812 (4532). Elevated attenuation and frequency performance enable smaller solution sizes compared to traditional thick-film chip ferrite beads. These 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.
The 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 (0603LS, 0805LS and 1008LS) are qualified to AEC-Q200 Grade 3 standards (-40°C to +85°C ambient), making them suitable for automotive and other harsh-environment applications.
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