BLM18DN381SZ1D

Chip Ferrite Bead Overview

The Murata BLM18DN381SZ1D is a single-line ferrite chip bead in the EMIFIL BLM18 series, housed in a 0603 (1608 metric) surface-mount package. It provides an impedance of 380 Ohms at 100 MHz with a tolerance of ±25%. The component supports a maximum DC current of 850 mA and features a maximum DC resistance of 325 mOhms. It operates within a temperature range of -55°C to +125°C and measures 1.6 mm x 0.8 mm x 0.8 mm.

Chip Ferrite Bead Feature Summary

• Provides high-impedance attenuation for electromagnetic interference suppression in high-frequency circuits
• Designed for surface-mount integration into compact electronic assemblies
• Constructed for stable performance across wide industrial temperature variations

Chip Ferrite Bead Applications

• High-speed digital signal line filtering
• Power supply noise suppression in portable devices
• EMI mitigation in automotive electronics

Chip Ferrite Bead Procurement Notes

Verify the complete part number including suffixes to ensure correct impedance and packaging specifications. Confirm RoHS compliance status and moisture sensitivity level requirements against project standards. Cross-reference datasheet electrical parameters with circuit design constraints before finalizing procurement orders.

Chip Ferrite Bead Selection Notes

Select this component when a 380 Ohm impedance at 100 MHz is required for EMI suppression. Ensure the 850 mA current rating exceeds the maximum operating current of the target circuit. Verify that the 0603 footprint and height constraints fit within the available PCB real estate and assembly capabilities.

Chip Ferrite Bead Part Context

This component belongs to the Murata EMIFIL BLM18 series of ferrite beads. The series offers various impedance values and current ratings in standardized 0603 packages. These components are widely used for noise reduction in consumer electronics and industrial applications requiring reliable high-frequency filtering.

Chip Ferrite Bead Replacement Considerations

Check for alternative part numbers within the BLM18DN series offering identical 380 Ohm impedance and compatible current ratings. Verify physical dimensions and terminal configurations match existing board layouts before substitution.