Murata Ferrite Bead (Chip Ferrite Bead), 1.6 x 0.8 x 0.8mm (0603), 237Ω impedance at 25 MHz, 600Ω impedance at 100 MHz,

The Murata BLM18HE series chip ferrite bead used for optical pickup modules are effective in suppressing the ringing because resistance especially grows in the lower frequency. It has high impedance at 1GHz and it is suitable for noise suppression. The magnetic shielded structure minimizes crosstalk.

Low DC resistance and a large rated current
Excellent direct current characteristics
Thin type is suitable for small and low profile equipment such as DSC, cellular phones