BLM31KN102SZ1L

Chip Ferrite Bead Overview

The Murata BLM31KN102SZ1L is a single-channel surface-mount ferrite bead designed for power line noise suppression. It features a 1206 (3216 metric) package with dimensions of 3.2 mm length, 1.6 mm width, and a maximum height of 1.80 mm. The component provides an impedance of 1 kOhms at 100 MHz with a tolerance of 25%. It supports a maximum DC current of 2 A and has a maximum DC resistance of 75 mOhms. Operating temperatures range from -55°C to +125°C. The device meets AEC-Q200 automotive qualification standards.

Chip Ferrite Bead Feature Summary

• Provides high-impedance noise filtering for power lines in the 1206 surface-mount footprint.
• Engineered for automotive applications with AEC-Q200 reliability certification.
• Capable of handling high continuous DC currents up to 2 Amperes.

Chip Ferrite Bead Applications

• Automotive electronic systems requiring EMI suppression
• Power line noise filtering in AI servers
• High-current circuit protection

Chip Ferrite Bead Procurement Notes

Verify the specific suffix codes against official Murata documentation to ensure correct impedance and current ratings. Confirm that the AEC-Q200 qualification status aligns with target automotive or industrial requirements. Check datasheet revisions for any updates to mechanical dimensions or electrical tolerances before finalizing design integration.

Chip Ferrite Bead Selection Notes

Select this component when a 1 kOhm impedance at 100 MHz is required for power line filtering. Ensure the PCB layout accommodates the 1206 package size and that the thermal environment stays within the -55°C to +125°C operating range. Verify that the 2 A current rating exceeds the maximum expected load current to prevent saturation.

Chip Ferrite Bead Part Context

This part belongs to the BLM31KN series, which focuses on high-rated current capabilities for SMD ferrite beads. It is distinct from standard BLM31 models by its optimized core material for higher current handling while maintaining effective noise suppression characteristics in compact form factors.

Chip Ferrite Bead Replacement Considerations

BLM31KN102SH1L is listed as a parameter-equivalent alternative available from Murata Electronics.

Chip Ferrite Bead FAQ

What is the maximum DC current rating for this ferrite bead?

The maximum DC current rating is 2 A.

Does this component meet automotive quality standards?

Yes, it is qualified under the AEC-Q200 standard.