BLF Chip Ferrite Beads Murata Electronics BLF Chip Ferrite Beads feature low DC resistance and a nickel barrier structure for solder heat resistance. These beads are effective in circuits without stable ground lines because they do not need a connection to the ground. Murata BLF Chip Ferrite Beads are available in AEC-Q200-qualified variants and in a range of compact sizes. The BLF series is ideal for general-purpose, powertrain, and safety applications.