BLM21PG300SZ1D

Chip Ferrite Bead Overview

BLM21PG300SZ1D is a single-line ferrite chip bead from the BLM21_Z series, manufactured by Murata Electronics. It features an impedance of 30 Ohms with a tolerance of 25% and supports a maximum DC current of 4 Amperes. The component has a maximum DC resistance of 14 mOhms and operates within a temperature range of -55°C to +125°C. It utilizes SMD/SMT termination in a 0805 (2012 metric) package measuring 2 mm x 1.25 mm x 0.85 mm. The part is RoHS compliant and available in Reel, Cut Tape, and MouseReel packaging formats.

Chip Ferrite Bead Feature Summary

• Provides electromagnetic interference suppression for power lines
• Supports high direct current loads up to 4 Amperes
• Designed for surface mount assembly processes

Chip Ferrite Bead Applications

• Power supply circuit filtering
• EMI suppression filters
• High-current signal line protection

Chip Ferrite Bead Procurement Notes

Verify the specific suffix 'SZ' against official Murata documentation to confirm exact manufacturing specifications and compliance status. Ensure that the selected packaging format aligns with automated placement equipment requirements. Cross-reference the maximum DC current rating with actual circuit load conditions to prevent thermal issues during operation.

Chip Ferrite Bead Selection Notes

Select this component when a low-impedance path is required for high-current applications while maintaining effective noise attenuation at 100 MHz. The 0805 footprint offers a balance between current handling capacity and board space efficiency compared to smaller packages. Consider the 14 mOhm DC resistance impact on voltage drop within the target power distribution network.

Chip Ferrite Bead Part Context

This component belongs to the BLM21 series of ferrite beads, which are widely used for EMI suppression in electronic circuits. The PG variant typically indicates specific material characteristics optimized for power line applications. The Z series designation denotes the specific product line configuration within Murata's ferrite bead portfolio.

Chip Ferrite Bead Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source data.