BLM31KN102SH1L

Chip Ferrite Bead Overview

The Murata BLM31KN102SH1L is a single-line surface-mount ferrite bead in the BLM31KN series, designed for high-rated current applications. 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 a test frequency of 100 MHz. It supports a maximum DC current of 2 A and has a maximum DC resistance of 75 mOhms. The device operates within a temperature range of -55°C to +125°C and holds AEC-Q200 qualification.

Chip Ferrite Bead Feature Summary

• High current handling capability suitable for power line filtering
• Automotive-grade reliability with AEC-Q200 qualification
• Resistive noise absorption characteristics at target frequencies

Chip Ferrite Bead Applications

• Power line noise suppression in automotive electronics
• EMI filtering for AI server components
• Noise reduction in high-current DC circuits

Chip Ferrite Bead Procurement Notes

Verify the specific suffix against official Murata documentation to confirm exact electrical tolerances and packaging configurations. Ensure the selected variant matches the required impedance and current ratings for the target circuit design. Cross-reference the manufacturer part number with authorized distributor catalogs to confirm availability and authenticity before procurement.

Chip Ferrite Bead Selection Notes

Select this component when designing circuits requiring significant current capacity alongside effective high-frequency noise attenuation. The 1206 footprint offers a balance between current handling and board space efficiency. Consider the 75 mOhm DC resistance impact on voltage drop when sizing for low-voltage power rails. Verify thermal management requirements given the self-heating effects under continuous 2 A load conditions.

Chip Ferrite Bead Part Context

This component belongs to the BLM31KN series, which Murata identifies as high-rated current SMD ferrite beads. The series is specifically engineered for demanding environments, including automotive and industrial applications. It serves as a critical passive element for electromagnetic interference suppression in modern electronic systems where signal integrity and power stability are paramount.

Chip Ferrite Bead Replacement Considerations

BLM31KN102SZ1L is documented as a parameter-equivalent alternative.