BLM18AG221SN1D

Chip Ferrite Bead Overview

The Murata BLM18AG221SN1D is a single-type chip ferrite bead in the BLM18AG series, housed in a 0603 (1608 metric) surface-mount package measuring 1.6 mm x 0.8 mm x 0.8 mm. 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 700 mA and features a maximum DC resistance of 250 mOhms. It operates within a temperature range of -55°C to +125°C and complies with AEC-Q200 automotive standards.

Chip Ferrite Bead Feature Summary

• Provides electromagnetic interference suppression through high-impedance characteristics at specific frequencies
• Designed for surface-mount assembly using standard SMD/SMT termination types
• Complies with AEC-Q200 qualification standards for automotive reliability

Chip Ferrite Bead Applications

• Automotive power systems
• Vehicle safety circuits
• General electronic equipment requiring EMI filtering

Chip Ferrite Bead Procurement Notes

Verify the specific suffix against official documentation to confirm electrical ratings, as variations exist within the series. Confirm RoHS compliance status and packaging format requirements directly with the manufacturer or authorized distributors before ordering. Ensure the selected variant matches the required current handling and impedance specifications for the target circuit design.

Chip Ferrite Bead Selection Notes

Select this component when a 0603 footprint is required with 220 Ohm impedance at 100 MHz. Verify that the 700 mA current rating meets the circuit's operational needs. Consider the low DC resistance to minimize voltage drop. Ensure compatibility with automated pick-and-place processes due to the standard surface-mount package dimensions.

Chip Ferrite Bead Part Context

This part belongs to the BLM18AG series of ferrite beads from Murata Electronics. The series offers various impedance and current ratings within the same 0603 physical envelope. This specific model targets applications requiring moderate current handling alongside effective high-frequency noise attenuation in compact designs.

Chip Ferrite Bead Replacement Considerations

Check for other BLM18AG variants with identical 220 Ohm impedance but different current ratings if load conditions change. Verify pinout and footprint compatibility with existing PCB layouts before substituting.