BLM18BD182SN1D

Chip Ferrite Bead Overview

The Murata BLM18BD182SN1D is a monolithic ferrite chip bead designed for EMI suppression in surface-mount applications. 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 1.8 kΩ at 100 MHz with a tolerance of ±25%. It supports a maximum rated current of 50 mA and has a maximum DC resistance (DCR) of 1.5 Ω. The device operates within a temperature range of -55°C to +125°C and complies with RoHS standards.

Chip Ferrite Bead Feature Summary

• Monolithic ferrite construction for effective high-frequency noise attenuation
• Single-line configuration optimized for compact circuit board layouts
• Surface-mount design compatible with standard SMD/SMT assembly processes

Chip Ferrite Bead Applications

• EMI suppression filters for general electronic circuits
• Noise filtering on high-speed signal lines
• Power supply line decoupling in portable devices

Chip Ferrite Bead Procurement Notes

Verify the specific ordering suffix against official Murata documentation to ensure correct impedance and current ratings. Confirm package dimensions and terminal configurations match the target PCB footprint. Check for RoHS compliance status and moisture sensitivity levels prior to procurement to ensure storage and handling requirements are met.

Chip Ferrite Bead Selection Notes

Select this component when a 0603 footprint is required for single-channel noise suppression. Ensure the application current does not exceed the 50 mA rating to prevent performance degradation. Verify that the 1.8 kΩ impedance at 100 MHz aligns with the target noise frequency spectrum. Consider the 1.5 Ω DCR impact on voltage drop in low-voltage power paths.

Chip Ferrite Bead Part Context

This part belongs to the Murata BLM series of ferrite beads, specifically the BD sub-series characterized by its 0603 package size. It serves as a passive component for electromagnetic interference reduction in consumer electronics and industrial equipment where space-constrained noise filtering is necessary.

Chip Ferrite Bead Replacement Considerations

Direct substitutes include other Murata 0603 ferrite beads with matching 1.8 kΩ impedance and similar current ratings, such as variants from the BLM18 series. Cross-brand replacements require verification of impedance curves, DC resistance, and physical footprint compatibility.