BLM21BD221SZ1D

Chip Ferrite Bead Overview

The BLM21BD221SZ1D is a single-line chip ferrite bead manufactured by Murata Electronics, designed for electromagnetic interference (EMI) suppression. It features an impedance of 220 Ohms at a test frequency of 100 MHz and supports a maximum DC current of 500 mA. The component has a maximum DC resistance of 260 mOhms with a tolerance of 25%. It operates within a temperature range of -55°C to +125°C and meets the AEC-Q200 automotive qualification standard. The device utilizes a surface-mount 0805 package with dimensions of 2.0 mm in length, 1.25 mm in width, and 0.85 mm in height.

Chip Ferrite Bead Feature Summary

• Provides effective high-frequency noise attenuation for signal integrity preservation
• Automotive-grade reliability compliant with AEC-Q200 standards
• Compact surface-mount footprint suitable for dense PCB layouts

Chip Ferrite Bead Applications

• Electromagnetic interference suppression in automotive electronic systems
• Signal line filtering for high-speed data transmission circuits
• Noise reduction in portable consumer electronics devices

Chip Ferrite Bead Procurement Notes

Verify the specific suffix 'SZ1D' against official Murata documentation to confirm exact manufacturing specifications and compliance status. Ensure that the selected distributor provides traceable source materials for automotive-grade components. Confirm RoHS3 compliance requirements match project constraints before finalizing procurement orders.

Chip Ferrite Bead Selection Notes

Select this component when a 220 Ohm impedance at 100 MHz is required for EMI filtering in space-constrained designs. The 0805 package offers a balance between current handling capability and board area efficiency. Consider the 500 mA rating to ensure adequate margin for the target application's steady-state current demands without saturation.

Chip Ferrite Bead Part Context

This part belongs to the BLM21 series of chip ferrite beads from Murata Electronics. The series is engineered for general-purpose noise suppression across various electronic applications. The BLM21BD variant specifically targets automotive environments, offering robust performance under varying thermal conditions while maintaining consistent electrical characteristics over the specified operating temperature range.

Chip Ferrite Bead Replacement Considerations

Consult official Murata cross-reference lists for verified substitutes. Ensure any alternative maintains identical impedance curves and current ratings to preserve circuit functionality.