BLM21PG331SN1D

Chip Ferrite Bead Overview

The Murata BLM21PG331SN1D is a single-line chip ferrite bead designed for power line noise suppression. It features an impedance of 330 Ohms at 100 MHz and supports a rated current of 1.5A. The component utilizes a 0805 (2012 Metric) surface-mount package with dimensions of 2.00mm x 1.25mm and a maximum height of 1.05mm. Its maximum DC resistance is 70 milliohms. The device operates within a temperature range of -55°C to 125°C and complies with RoHS3 standards.

Chip Ferrite Bead Feature Summary

• Provides effective electromagnetic interference suppression on power lines through high-impedance characteristics at target frequencies.
• Engineered for high-current applications with a 1.5A rating and low DC resistance to minimize voltage drop.
• Constructed in a compact 0805 surface-mount footprint suitable for space-constrained printed circuit board layouts.

Chip Ferrite Bead Applications

• Power supply filtering
• EMI suppression filters

Chip Ferrite Bead Procurement Notes

Verify the specific suffix 'SN1D' against official Murata documentation to confirm the exact impedance tolerance and packaging configuration. Ensure that the selected variant matches the required current handling and thermal performance for the intended application environment. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and availability status before procurement.

Chip Ferrite Bead Selection Notes

Select this component when designing circuits requiring noise attenuation on power rails with currents up to 1.5A. The 330 Ohm impedance at 100 MHz makes it suitable for suppressing high-frequency interference. Consider the 0805 package size for compatibility with standard SMT assembly processes and ensure the operating temperature range meets the system's environmental requirements.

Chip Ferrite Bead Part Context

This component belongs to the Murata EMIFIL BLM21PG series, which specializes in multi-layer ferrite beads for electronic equipment. The series offers various impedance values and current ratings within standardized footprints. The BLM21PG331SN1D specifically addresses power line noise reduction needs in consumer electronics and industrial devices requiring reliable EMI performance.

Chip Ferrite Bead Replacement Considerations

The BLM21PG331SZ1D is a confirmed substitute part number offering identical electrical specifications including 330 Ohm impedance and 1.5A rating. Verify package compatibility and lead marking differences if visual inspection is required during assembly.