The Murata BLM18RK series are EMIFIL chip ferrite beads designed to suppress high-frequency noise in digital interface applications. These small-sized, EIA 0603 standard components effectively reduce electromagnetic interference by minimizing resonance and providing clean signal waveforms. They do not require grounding connections, making them suitable for circuits without stable ground lines. The ferrite beads feature a nickel barrier structure on the external electrodes, ensuring excellent solder heat resistance. While their impedance increases at lower frequencies, they are optimized for high-frequency noise suppression and are available in specific impedance values at 100 MHz. The operating temperature range spans from -55°C to 125°C. These components are widely used in industrial, power management, consumer electronics, and portable device applications.