BLM18BB221SN1D

Chip Ferrite Bead Overview

The Murata BLM18BB221SN1D is a single-line ferrite chip bead in the EMIFIL BLM18 series. It provides 220 Ohms impedance at 100 MHz with a 25% tolerance. The component supports a maximum DC current of 450 mA and has a maximum DC resistance of 450 mOhms. It operates within a temperature range of -55°C to +125°C. The physical dimensions are 1.6 mm length, 0.8 mm width, and 0.8 mm height, conforming to the 0603 (1608 metric) package.

Chip Ferrite Bead Feature Summary

• Designed for signal line noise suppression
• Single-line configuration for compact circuit integration
• Surface mount construction for automated assembly

Chip Ferrite Bead Applications

• EMI suppression filters
• High-speed signal lines

Chip Ferrite Bead Procurement Notes

Verify the specific suffix SN1D against official Murata documentation to confirm packaging and material specifications. Ensure the selected variant matches the required 450 mA current rating and 220 Ohm impedance profile for the target application. Cross-reference datasheets to validate RoHS compliance status and operating temperature limits before procurement.

Chip Ferrite Bead Selection Notes

Select this component when signal integrity protection is required for low-current digital or analog lines. The 0603 footprint suits space-constrained designs. Verify that the 450 mA saturation current exceeds the peak operational current of the protected circuit to prevent performance degradation due to magnetic saturation.

Chip Ferrite Bead Part Context

This part belongs to the Murata EMIFIL BLM18 family of ferrite beads. These components are engineered for high-frequency noise attenuation in portable electronics and communication devices. The BLM18BB variant specifically targets applications requiring moderate current handling capabilities within a standard surface-mount form factor.

Chip Ferrite Bead Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data.