BLM21HE472SH1L

Chip Ferrite Bead Overview

The Murata BLM21HE472SH1L is a single-line ferrite bead in an 0805 (2012 metric) surface-mount package. It provides an impedance of 4700 Ω at 100 MHz with a maximum DC resistance of 400 mΩ and a current rating of 850 mA. The component operates within a temperature range of -55°C to +125°C and meets AEC-Q200 automotive standards.

Chip Ferrite Bead Feature Summary

• Provides EMI/RFI suppression for signal lines
• Automotive-grade reliability certified under AEC-Q200
• Compact 0805 footprint for space-constrained designs

Chip Ferrite Bead Applications

• Automotive electronic systems
• Signal line noise suppression
• EMI filtering in compact devices

Chip Ferrite Bead Procurement Notes

Verify the specific suffix 'H1' against official Murata documentation to confirm lead-free status and tape-and-reel specifications. Ensure the selected variant matches the required impedance tolerance and current handling capabilities for the target application circuit.

Chip Ferrite Bead Selection Notes

Select this component when high impedance at 100 MHz is required for signal integrity. The 850 mA rating suits moderate current applications, while the low DCR minimizes power loss. Verify thermal management requirements given the 125°C maximum operating limit.

Chip Ferrite Bead Part Context

This part belongs to the BLM21 series of multi-layer ferrite beads designed for high-frequency noise suppression. The H1 suffix typically denotes specific packaging or material characteristics within Murata's automotive-grade lineup, distinct from standard commercial variants.

Chip Ferrite Bead Replacement Considerations

Check Murata datasheets for other BLM21HE472 variants with different suffixes that may offer identical electrical performance but alternate packaging options.