BLM21HE122SH1L

Chip Ferrite Bead Overview

The Murata BLM21HE122SH1L is a surface-mount ferrite bead in the BLM21H series, designed for high-current applications. It features an impedance of 1200 Ω at 100 MHz with a tolerance of ±25%. The component supports a maximum DC current of 110 mA and has a maximum DC resistance of 0.11 Ω. Housed in a compact 0805 (2012 metric) package measuring 2.0 mm x 1.25 mm x 0.85 mm, it operates within a temperature range of -55°C to +125°C. This part is qualified under AEC-Q200 standards for automotive reliability.

Chip Ferrite Bead Feature Summary

• Provides effective electromagnetic interference suppression through high-impedance ferrite characteristics
• Engineered for robust performance in demanding automotive environments
• Supports reliable operation across extended industrial temperature ranges

Chip Ferrite Bead Applications

• Automotive electronic systems
• Power supply line filtering
• High-speed signal line 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 impedance and current ratings for the target circuit design. Cross-reference the manufacturer's latest datasheet to validate compliance with applicable automotive quality standards before finalizing procurement specifications.

Chip Ferrite Bead Selection Notes

Select this component when designing circuits requiring significant noise attenuation on power lines carrying moderate currents. The low DC resistance minimizes voltage drop and power loss compared to higher-resistance alternatives. Consider the physical dimensions and thermal characteristics to ensure compatibility with the printed circuit board layout and operational environment constraints.

Chip Ferrite Bead Part Context

This component belongs to the BLM21H series of chip ferrite beads manufactured by Murata Electronics. The series is specifically engineered for automotive applications, meeting rigorous reliability standards. These components are widely used in modern vehicle electronics to suppress high-frequency noise while maintaining stable current flow in sensitive power distribution networks.

Chip Ferrite Bead Replacement Considerations

Consult official Murata substitution guides for verified equivalents. Ensure any alternative maintains identical impedance curves, current handling capabilities, and AEC-Q200 qualification status.