BLM18BA121SN1D

Chip Ferrite Bead Overview

The Murata BLM18BA121SN1D is a single-line chip ferrite bead from the BLM18BA series, designed for high-speed signal line applications. It features an impedance of 120 Ohms at a test frequency of 100 MHz with a tolerance of 25%. The component supports a maximum DC current of 200 mA and has a maximum DC resistance of 900 mOhms. Housed in a standard 0603 (1608 metric) SMD package measuring 1.6 mm x 0.8 mm x 0.8 mm, it operates within a temperature range of -55°C to +125°C.

Chip Ferrite Bead Feature Summary

• Designed specifically for suppressing high-frequency noise in high-speed signal lines.
• Utilizes EMIFIL technology to minimize resonance risks and ensure undistorted signal waveforms.
• Features a nickel barrier electrode structure that provides excellent soldering heat resistance.

Chip Ferrite Bead Applications

• High-speed digital signal line noise suppression
• Electromagnetic interference (EMI) filtering
• Portable electronic devices

Chip Ferrite Bead Procurement Notes

Verify the specific suffix SN1D against official Murata documentation to confirm packaging and tape specifications. Ensure the selected variant matches the required impedance tolerance and current rating for the target circuit design before finalizing procurement orders.

Chip Ferrite Bead Selection Notes

Select this component when low current handling is acceptable for signal lines rather than power rails. The 0603 footprint offers space efficiency, while the 120 Ohm impedance targets specific high-frequency attenuation requirements. Verify thermal limits align with the application environment.

Chip Ferrite Bead Part Context

This part belongs to the Murata BLM18BA series of EMIFIL chip ferrite beads. These components are engineered for EMI suppression in compact electronics. The series utilizes multi-layer ferrite technology to provide effective noise damping without requiring a ground connection, making them suitable for various signal integrity challenges.

Chip Ferrite Bead Replacement Considerations

Consult official Murata substitution guides for compatible alternatives. Cross-reference impedance values and physical dimensions to ensure mechanical fit and electrical performance equivalence in existing designs.