BLM15EG221SZ1D

Chip Ferrite Bead Overview

The Murata BLM15EG221SZ1D is a single-line ferrite bead chip designed for high-frequency noise suppression in signal and power lines. It features an impedance of 220 Ohms at 100 MHz within a compact 0402 (1005 metric) surface-mount package. The component supports a maximum rated current of 700 mA with a maximum DC resistance of 280 milliohms. It operates reliably across a temperature range of -55°C to +125°C.

Chip Ferrite Bead Feature Summary

• Provides effective attenuation of high-frequency electromagnetic interference on signal and power lines
• Designed to minimize resonance risks while maintaining signal integrity without requiring a ground connection
• Features nickel barrier layers on external electrodes to ensure robust soldering heat resistance

Chip Ferrite Bead Applications

• Electromagnetic interference suppression in notebook computers
• Noise filtering for digital still camera data lines
• Prevention of errors caused by local oscillator signals in mobile phones

Chip Ferrite Bead Procurement Notes

Verify the specific suffix against official documentation, as ordering codes may indicate variations in packaging or tape specifications rather than functional changes. Confirm that the selected variant matches the required circuit topology and physical footprint constraints for the target assembly process.

Chip Ferrite Bead Selection Notes

Select this component when low DC resistance is critical for maintaining efficiency in high-current signal paths. The 0402 form factor allows for dense board layouts. Ensure the operating environment remains within the specified thermal limits to maintain consistent impedance characteristics during operation.

Chip Ferrite Bead Part Context

This device belongs to the EMIFIL BLM15 series, which specializes in suppressing GHz-band noise. The EG designation typically indicates performance optimized for lower impedance lines compared to other series variants. It serves as a passive filter solution for portable electronics and industrial applications requiring compact noise control.

Chip Ferrite Bead Replacement Considerations

Consult official substitution lists for verified equivalents. Cross-referencing requires matching impedance values, current ratings, and package dimensions to ensure electrical compatibility.