BLM21BB221SN1D

Chip Ferrite Bead Overview

The Murata BLM21BB221SN1D is a surface-mount ferrite bead from the BLM21BB series, designed for electromagnetic interference (EMI) suppression. It features an impedance of 220 Ω at 100 MHz with a tolerance of 25%. The component has a rated DC current of 200 mA and a maximum DC resistance of 350 mΩ. It operates within a temperature range of -55°C to +125°C. The physical dimensions are 2.0 mm in length, 1.25 mm in width, and 0.85 mm in height, conforming to the 0805 package size.

Chip Ferrite Bead Feature Summary

• Provides effective high-frequency noise attenuation for signal integrity protection
• Compact surface-mount design suitable for space-constrained printed circuit boards
• Compliant with RoHS and REACH environmental standards

Chip Ferrite Bead Applications

• High-speed signal line filtering
• General EMI suppression filters
• Power supply noise reduction

Chip Ferrite Bead Procurement Notes

Verify the specific suffix against official Murata documentation to confirm exact electrical tolerances and packaging configurations. Ensure the selected variant matches the required current rating and impedance specifications for the target application. Cross-reference datasheets to validate compliance certifications and operating temperature ranges before finalizing procurement decisions.

Chip Ferrite Bead Selection Notes

Select this component when a 0805 footprint is required for EMI filtering with moderate current handling capabilities. Compare the 200 mA rating against circuit load requirements to prevent saturation. Consider the BLM21PG series if higher current capacity is necessary, or the BLM21AG series for alternative impedance characteristics within the same package form factor.

Chip Ferrite Bead Part Context

This part belongs to the Murata BLM21BB series of chip ferrite beads. These components are engineered for general-purpose noise suppression in electronic circuits. The series offers various impedance values and current ratings within standardized package sizes to facilitate flexible design integration across consumer and industrial electronics.

Chip Ferrite Bead Replacement Considerations

BLM21BB221SH1D: Similar impedance but rated for 500 mA DC current.

Chip Ferrite Bead FAQ

What is the maximum DC current rating for this component?

The maximum DC current rating is 200 mA.

Does this component meet automotive qualification standards?

No, this specific part number is not qualified under AEC-Q200 standards.