BLM18HB121SN1D

Chip Ferrite Bead Overview

The Murata BLM18HB121SN1D is a single-line ferrite chip bead in the BLM18HB series, designed for surface-mount technology. It features a 0603 (1608 metric) package with dimensions of 1.6 mm length, 0.8 mm width, and 0.8 mm height. The component provides an impedance of 120 Ohms at a test frequency of 100 MHz with a tolerance of 25%. It supports a maximum DC current of 200 mA and has a maximum DC resistance of 500 mOhms. The device operates within a temperature range of -55°C to +125°C.

Chip Ferrite Bead Feature Summary

• Provides electromagnetic interference suppression through high-impedance characteristics at specific frequencies.
• Utilizes a compact 0603 surface-mount footprint suitable for space-constrained printed circuit board layouts.
• Constructed from ferrite material to effectively attenuate high-frequency noise signals.

Chip Ferrite Bead Applications

• EMI suppression filters
• Power supply lines

Chip Ferrite Bead Procurement Notes

Verify the complete part number including suffixes against official manufacturer documentation to ensure correct impedance and current ratings. Confirm RoHS compliance status and specific packaging options such as cut tape or reel quantities directly with authorized distributors. Cross-reference datasheet revisions to validate electrical parameters before finalizing procurement orders.

Chip Ferrite Bead Selection Notes

Select this component when a low-current ferrite bead is required for EMI filtering in compact designs. The 200 mA rating distinguishes it from higher-current variants like the BLM18PG or BLM18SP series. Ensure the 120 Ohm impedance aligns with target noise frequencies. Verify that the 0603 package fits the available PCB real estate and soldering profile requirements.

Chip Ferrite Bead Part Context

This component belongs to the Murata BLM18HB series of ferrite beads. It shares the standard 0603 mechanical outline with other members of the BLM18 family but differs in electrical specifications. The HB series typically targets applications requiring lower current handling compared to PG or SP series variants while maintaining similar physical dimensions for design flexibility.

Chip Ferrite Bead Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data. Consult official Murata documentation for equivalent alternatives within the BLM18 series or cross-reference with distributor databases for compatible components meeting identical impedance and current criteria.