BLM31KN471SH1L

Chip Ferrite Bead Overview

The Murata BLM31KN471SH1L is a single-channel ferrite chip bead designed for surface-mount technology in the 1206 (3216 metric) 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 4 Amperes and features a maximum DC resistance of 20 mOhms. It operates within a temperature range of -55°C to +125°C and holds AEC-Q200 qualification.

Chip Ferrite Bead Feature Summary

• AEC-Q200 qualified for automotive reliability standards
• High rated current capability of 4 Amperes
• Single-line power filter configuration

Chip Ferrite Bead Applications

• Automotive electronic circuit noise suppression
• Power line filtering in vehicle systems
• Electromagnetic interference mitigation in high-current applications

Chip Ferrite Bead Procurement Notes

Verify the suffix SH1L against official documentation to confirm specific packaging or variant details, as ordering suffixes may indicate differences in reel specifications or tape dimensions rather than electrical function. Ensure compatibility with automated placement equipment regarding the 1206 footprint and height constraints.

Chip Ferrite Bead Selection Notes

Select this component when a 1206 footprint is required with a 4A current rating and 470 Ohm impedance at 100 MHz. Consider the low DC resistance of 20 mOhms for minimizing voltage drop in power lines. Confirm AEC-Q200 compliance is necessary for the target application environment.

Chip Ferrite Bead Part Context

This part belongs to the BLM31KN series, which are high-rated current ferrite beads manufactured by Murata Electronics. The series is specifically engineered for demanding applications requiring robust noise suppression in power circuits while maintaining low insertion loss due to minimal DC resistance.

Chip Ferrite Bead Replacement Considerations

BLM31KN471SZ1L is documented as a parameter-equivalent alternative.