BLM18SP221SZ1D

Chip Ferrite Bead Overview

The Murata BLM18SP221SZ1D is a single-channel ferrite chip bead in the BLM18_xN series, housed in a 0603 (1.6mm x 0.8mm x 0.6mm) SMD package. It provides an impedance of 220 Ohms at 100 MHz with a 25% tolerance. The component supports a maximum DC current of 2.8 A and has a maximum DC resistance of 48 mOhms. It operates within a temperature range of -55°C to +125°C.

Chip Ferrite Bead Feature Summary

• Provides high-frequency noise suppression for power lines
• Supports high continuous DC current loads up to 2.8 A
• Features low DC resistance to minimize voltage drop

Chip Ferrite Bead Applications

• Power line filtering in portable devices
• Noise suppression in automotive electronics
• EMI reduction in industrial control systems

Chip Ferrite Bead Procurement Notes

Verify the specific suffix against official Murata documentation to confirm impedance and current ratings. Ensure the ordering code matches the required package dimensions and termination style. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and compliance with RoHS standards before finalizing procurement.

Chip Ferrite Bead Selection Notes

Select this component when high current handling is required alongside moderate noise attenuation. The 0603 footprint offers space efficiency for dense PCB layouts. Compare the 2.8 A rating against circuit load requirements to ensure adequate margin. Consider the 220 Ohm impedance profile for target frequency suppression needs.

Chip Ferrite Bead Part Context

This ferrite bead belongs to the BLM18 family, designed for surface-mount applications. It utilizes Murata's proprietary technology to achieve stable electrical characteristics across wide temperature ranges. The component serves as a passive filter element to suppress electromagnetic interference in sensitive electronic circuits.

Chip Ferrite Bead Replacement Considerations

BLM18SP221SN1D is a documented alternate sizing guide option from the same manufacturer.