BLM21SP471SH1D

Chip Ferrite Bead Overview

The BLM21SP471SH1D is a single-line ferrite chip bead from the Murata EMIFIL BLM21 series, housed in an 0805 (2012 metric) surface-mount package. It provides an impedance of 470 Ohms at a test frequency of 100 MHz with a tolerance of 25%. The component supports a maximum DC current of 2.5 A and features a maximum DC resistance of 0.03 Ohms. It operates within a temperature range of -55°C to +125°C and meets AEC-Q200 automotive qualification standards.

Chip Ferrite Bead Feature Summary

• AEC-Q200 qualified for automotive reliability requirements
• High current handling capability up to 2.5 A
• Compact 0805 surface-mount footprint
• Single-line power line filtering design

Chip Ferrite Bead Applications

• Automotive electronic circuit protection
• Power supply line noise suppression
• DC power distribution filtering

Chip Ferrite Bead Procurement Notes

Verify the complete part number against official Murata documentation to ensure correct suffix alignment. Confirm that the specific variant matches the required 2.5 A current rating and 470 Ohm impedance specifications. Check for RoHS compliance status and packaging options such as cut tape or reel quantities before finalizing procurement orders.

Chip Ferrite Bead Selection Notes

Select this component when high current capacity is required alongside effective high-frequency noise attenuation in compact spaces. The 0805 package offers a balance between thermal performance and board space efficiency. Ensure the application environment stays within the specified -55°C to +125°C operating range for optimal performance.

Chip Ferrite Bead Part Context

This component belongs to the BLM21 series of EMIFIL ferrite beads, designed for general-purpose and automotive applications. The series utilizes Murata's proprietary technology to provide stable impedance characteristics across varying temperatures and frequencies, making it suitable for suppressing electromagnetic interference in sensitive electronic circuits.

Chip Ferrite Bead Replacement Considerations

Consult official Murata substitution guides for compatible alternatives. Verify that any replacement maintains the same 0805 footprint, 2.5 A current rating, and 470 Ohm impedance at 100 MHz to ensure circuit compatibility.