BLM18SG221TN1D

Chip Ferrite Bead Overview

The Murata BLM18SG221TN1D is a single-line ferrite chip bead in the EMIFIL BLM18S series, housed in a 0603 (1608 metric) surface-mount package. It provides an impedance of 220 Ohms at a test frequency of 100 MHz with a tolerance of 25%. The component supports a maximum DC current of 2.5 A and features a maximum DC resistance of 40 mOhms. It operates within a temperature range of -55°C to +125°C and measures 1.6 mm in length, 0.8 mm in width, and 0.8 mm in height.

Chip Ferrite Bead Feature Summary

• Designed for high-current circuits through low DC resistance characteristics
• Provides effective electromagnetic interference suppression in compact form factors

Chip Ferrite Bead Applications

• Power supply line filtering
• EMI suppression filters

Chip Ferrite Bead Procurement Notes

Verify the specific suffix TN1D against official Murata documentation to confirm packaging details and compliance status. Ensure the selected variant matches the required current rating and impedance specifications for the target application circuit. Cross-reference datasheets to confirm RoHS and REACH compliance requirements before finalizing procurement orders.

Chip Ferrite Bead Selection Notes

Select this component when high current handling capability is required alongside EMI suppression in space-constrained designs. The 0603 footprint allows for dense PCB layouts while maintaining performance. Compare rated current and DC resistance against similar series variants like BLM18BB or BLM18KG to ensure optimal thermal and electrical performance for the specific load conditions.

Chip Ferrite Bead Part Context

This part belongs to the Murata EMIFIL BLM18S series, which specializes in ferrite beads capable of handling larger currents compared to standard series. The BLM18SG221TN1D utilizes a single-line configuration suitable for power lines where significant DC bias must be managed without saturation, distinguishing it from lower-current alternatives in the broader BLM18 family.

Chip Ferrite Bead Replacement Considerations

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