BLM18TG221TN1D

Chip Ferrite Bead Overview

The Murata BLM18TG221TN1D is a single-line ferrite chip bead in the EMIFIL BLM18TG series, designed for surface-mount assembly in a 0603 (1608 metric) 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 rating of 200 mA and exhibits a maximum DC resistance of 300 mOhms. It operates within a temperature range of -55°C to +125°C.

Chip Ferrite Bead Feature Summary

• Provides high-impedance attenuation for electromagnetic interference suppression in power lines
• Utilizes a compact 0603 footprint suitable for dense surface-mount layouts
• Constructed from ferrite material optimized for broadband noise absorption

Chip Ferrite Bead Applications

• Power supply line filtering
• EMI suppression circuits
• Noise reduction in digital signal lines

Chip Ferrite Bead Procurement Notes

Verify the specific suffix TN1D against the manufacturer datasheet to confirm packaging details and terminal configuration. Ensure the selected variant matches the required current rating and impedance specifications for the target application circuit design.

Chip Ferrite Bead Selection Notes

Select this component when a low-current ferrite bead is required for EMI suppression in space-constrained designs. Compare the 200 mA rating against the circuit's operating current to prevent saturation. Consider the 300 mOhms DCR impact on voltage drop if used in sensitive power rails.

Chip Ferrite Bead Part Context

This part belongs to the Murata EMIFIL BLM18TG series of chip ferrite beads. These components are engineered for general-purpose noise suppression in electronic equipment. The series offers various impedance values and current ratings within the standard 0603 package size.

Chip Ferrite Bead Replacement Considerations

Direct substitutes include other 0603 ferrite beads with 220 Ohms impedance at 100 MHz and similar current ratings, such as the BLM18PG221SN1D or BLM18SG221TN1D, provided their current handling capabilities meet the application requirements.