BLM31PG391SZ1L

Chip Ferrite Bead Overview

The Murata BLM31PG391SZ1L is a single-channel chip ferrite bead in the 1206 (3216 metric) surface-mount package. It provides an impedance of 390 Ohms with a tolerance of 25% at a test frequency of 100 MHz. The component supports a maximum DC current of 2 A and features a maximum DC resistance of 50 mOhms. It operates within a temperature range of -55°C to +125°C.

Chip Ferrite Bead Feature Summary

• Designed to function as a resistor at noise frequencies to reduce resonance possibilities
• Supports high current handling for power circuit applications

Chip Ferrite Bead Applications

• Power circuits
• Noise suppression

Chip Ferrite Bead Procurement Notes

Verify the specific suffix against official Murata documentation, as ordering codes may indicate variations in packaging or tape-and-reel specifications. Confirm that the selected variant matches the required impedance and current ratings for the target application. Cross-reference the manufacturer part number with authorized distributor catalogs to ensure authenticity and traceability.

Chip Ferrite Bead Selection Notes

Select this component when a 1206 footprint is required for high-current noise filtering. Ensure the 390 Ohm impedance at 100 MHz aligns with the target noise spectrum. Verify that the 2 A current rating exceeds the maximum operating current of the protected line to prevent saturation or excessive heating.

Chip Ferrite Bead Part Context

This component belongs to the BLM series of chip ferrite beads manufactured by Murata Electronics. The series is engineered for effective noise suppression in electronic circuits. The BLM31PG variant specifically targets applications requiring robust performance under significant DC bias conditions.

Chip Ferrite Bead Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.