BLM18KG221BH1D

Chip Ferrite Bead Overview

The Murata BLM18KG221BH1D is a single-line ferrite chip bead in the EMIFIL BLM18 series, housed in a 0603 (1608 metric) surface-mount package measuring 1.6 mm x 0.8 mm x 0.95 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 1.5 A and features a maximum DC resistance of 50 mOhms. It operates within a temperature range of -55°C to +150°C and holds AEC-Q200 qualification for automotive reliability.

Chip Ferrite Bead Feature Summary

• AEC-Q200 qualified for automotive electronic applications
• High current handling capability up to 1.5 A
• Low DC resistance design for minimal signal loss
• Compact 0603 footprint for dense PCB layouts

Chip Ferrite Bead Applications

• Automotive noise suppression circuits
• Power line filtering in electronic systems
• EMI suppression on high-current data lines

Chip Ferrite Bead Procurement Notes

Verify the suffix BH1D against SN1D variants, as they differ in physical height and current ratings. Confirm AEC-Q200 compliance requirements for your specific application. Check RoHS status and moisture sensitivity levels before assembly. Ensure the 1.5 A rating meets your circuit's peak load demands.

Chip Ferrite Bead Selection Notes

Select this part when automotive-grade reliability and higher current capacity are required compared to standard BLM18 models. The BH1D suffix indicates a thicker profile suitable for 1.5 A loads, unlike the thinner SN1D versions rated for lower currents. Consider the 220 Ohm impedance value for target noise frequencies around 100 MHz.

Chip Ferrite Bead Part Context

This component belongs to the Murata EMIFIL BLM18 family of ferrite beads. The BLM18KG221BH1D specifically represents the high-current variant within the 0603 size category. It is designed to replace older or lower-rated components in automotive and industrial designs requiring robust EMI filtering.

Chip Ferrite Bead Replacement Considerations

BLM18KG221SN1D offers similar electrical impedance but has a lower current rating of 450 mA and different physical dimensions.