BLM18HK471SN1D

Chip Ferrite Bead Overview

The Murata BLM18HK471SN1D is a single-line chip ferrite bead in a 0603 (1608 metric) surface-mount package. It provides an impedance of 470 Ohms at 100 MHz and 600 Ohms at 1 GHz, with a maximum DC resistance of 700 mΩ. The component supports a rated current of 200 mA and operates within a temperature range of -55°C to +125°C. Physical dimensions are 1.6 mm in length, 0.8 mm in width, and 0.8 mm in height.

Chip Ferrite Bead Feature Summary

• Provides high impedance for effective EMI suppression in the MHz to GHz frequency range
• Utilizes iron oxide material for stable noise filtering performance
• Designed for surface mounting on digital interface circuits

Chip Ferrite Bead Applications

• EMI suppression filters
• Digital interface noise reduction

Chip Ferrite Bead Procurement Notes

Verify that the specific part number matches the required impedance and current rating for the target circuit. Confirm compliance with RoHS and REACH regulations as specified in the official datasheet. Ensure the selected packaging type aligns with automated assembly requirements. Cross-reference the manufacturer's latest documentation to validate environmental classifications and handling instructions prior to procurement.

Chip Ferrite Bead Selection Notes

Select this component when the application requires a low-profile 0603 footprint with a 200 mA current capacity. The BLM18HK series offers higher impedance characteristics compared to standard BLM18KG variants, making it suitable for stricter noise attenuation needs. Verify that the 700 mΩ DC resistance meets the power loss constraints of the signal line. Consider thermal management capabilities within the -55°C to +125°C operating range.

Chip Ferrite Bead Part Context

This component belongs to the Murata EMIFIL BLM18HK series, which utilizes iron oxide materials for superior high-frequency noise absorption. The series is engineered for compact electronic designs requiring efficient electromagnetic interference mitigation. The BLM18HK designation indicates specific magnetic properties optimized for digital signal integrity preservation in space-constrained applications.

Chip Ferrite Bead Replacement Considerations

Public confirmed substitute part numbers: BLM18KG471SN1D, BLM18HD471SN1D.