The Murata BLM21BD series are EMIFIL chip ferrite beads designed to suppress high-frequency noise in high-speed signal lines. These ceramic components help reduce resonance and prevent signal distortion. They do not require grounding connections and feature a nickel barrier structure for excellent solder heat resistance. Available in various impedance values at 100MHz, these miniaturized beads are effective in low-impedance lines, maintaining signal integrity with sharp impedance characteristics. They operate across a temperature range of -55°C to 125°C and are compliant with the EIA 0805 standard size. Suitable for use in industrial applications, power management, consumer electronics, and portable devices.