BLM21PG300SN1D

Chip Ferrite Bead Overview

The Murata BLM21PG300SN1D is a single-line chip ferrite bead in an 0805 (2012 metric) surface-mount package. It provides an impedance of 30 Ohms at 100 MHz with a maximum DC resistance of 14 mOhm and a rated current of 4A. The component operates within a temperature range of -55°C to 125°C, measures 2.00mm x 1.25mm x 0.85mm, and complies with RoHS3 and REACH standards.

Chip Ferrite Bead Feature Summary

• Functions as a noise filter by exhibiting resistive behavior at high frequencies to suppress electromagnetic interference.
• Designed for power line applications with high current handling capability suitable for compact circuits.

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 exact impedance tolerance and packaging configuration. Ensure the selected variant matches the required 4A current rating and 14 mOhm DCR specifications for the target application circuit design.

Chip Ferrite Bead Selection Notes

Select this component when a low-impedance path is required for power lines while maintaining effective high-frequency noise attenuation. The 0805 footprint offers a balance between current capacity and board space efficiency compared to smaller packages.

Chip Ferrite Bead Part Context

This part belongs to the Murata EMIFIL BLM21 series, which utilizes specialized ferrite materials optimized for power line noise suppression. The series is engineered to provide stable performance across wide temperature ranges while minimizing insertion loss in the passband.

Chip Ferrite Bead Replacement Considerations

BLM21SN300SN1D