BLM18AG221SH1D

Chip Ferrite Bead Overview

The Murata BLM18AG221SH1D is a single-line chip ferrite bead in the EMIFIL BLM18AG series, designed for surface-mount installation. It features a 0603 (1608 metric) package with dimensions of 1.6mm length, 0.8mm width, and 0.8mm height. The component provides an impedance of 220 Ohms at 100 MHz with a tolerance of 25%. It supports a maximum DC current rating of 700mA and has a maximum DC resistance (DCR) of 250 milliohms. Operating temperatures range from -55°C to +125°C. It holds AEC-Q200 qualification for automotive applications.

Chip Ferrite Bead Feature Summary

• AEC-Q200 qualified for automotive reliability standards
• High impedance performance at 100 MHz for noise suppression
• Compact 0603 surface-mount footprint for space-constrained designs

Chip Ferrite Bead Applications

• Automotive power supply lines
• Vehicle powertrain systems
• Automotive safety circuits

Chip Ferrite Bead Procurement Notes

Verify the specific suffix SH1D against official Murata documentation to confirm packaging type and tape/reel specifications. Ensure the selected variant matches the required current rating and impedance tolerance for the target circuit design. Cross-reference the part number with authorized distributors to confirm authenticity and traceability.

Chip Ferrite Bead Selection Notes

Select this component when AEC-Q200 compliance is mandatory for automotive projects. The 700mA rating suits moderate current paths where 220 Ohm attenuation at 100 MHz is required. Consider the 250 milliohm DCR impact on voltage drop in low-voltage supply rails. Compare against other BLM18 series variants if higher current capacity or different impedance values are needed.

Chip Ferrite Bead Part Context

This part belongs to the Murata BLM18AG series, which specializes in high-reliability ferrite beads for automotive electronics. The AG designation indicates AEC-Q200 qualification. The series offers various impedance and current combinations within the standard 0603 package, allowing designers to optimize noise filtering without increasing board space.

Chip Ferrite Bead Replacement Considerations

Check Murata's official substitution guide for equivalent parts within the BLM18 family. Verify that any alternative maintains the same 220 Ohm impedance at 100 MHz and meets the 700mA current requirement. Ensure the replacement also holds AEC-Q200 certification if used in automotive contexts.