BLM03HB401SZ1D

Chip Ferrite Bead Overview

The Murata BLM03HB401SZ1D is a multilayer chip ferrite bead designed for noise suppression in electronic circuits. It features an impedance of 400 Ohms at a test frequency of 100 MHz and supports a maximum DC current of 125 mA. The component has a maximum DC resistance of 2.8 Ohms and operates within a temperature range of -55°C to +125°C. It utilizes a 0201 (0603 metric) surface-mount package with dimensions of 0.6 mm length, 0.3 mm width, and 0.3 mm height. The device is AEC-Q200 qualified and employs a horizontal winding inner coil structure.

Chip Ferrite Bead Feature Summary

• Horizontal winding inner coil structure for enhanced performance
• AEC-Q200 qualification for automotive reliability standards
• Compact 0201 surface-mount footprint for space-constrained designs

Chip Ferrite Bead Applications

• Automotive electronics noise suppression
• High-frequency signal line filtering
• Power supply circuit EMI reduction

Chip Ferrite Bead Procurement Notes

Verify the specific suffix 'SZ1D' against official Murata documentation to confirm packaging configuration and tape-and-reel specifications. Ensure that the selected variant matches the required impedance tolerance and current rating for the target application environment. Cross-reference the datasheet for any recent product change notifications or material updates.

Chip Ferrite Bead Selection Notes

Select this component when a compact form factor is required alongside specific high-impedance characteristics at 100 MHz. The 125 mA current rating dictates suitability for low-power signal lines rather than high-current power rails. Confirm that the 2.8 Ohm DC resistance aligns with voltage drop constraints in the design.

Chip Ferrite Bead Part Context

This part belongs to the BLM03 series of multilayer ferrite beads manufactured by Murata Electronics. The series offers various impedance values and current ratings within the same 0201 package size, allowing designers to standardize footprints across different noise suppression requirements while maintaining consistent board layout practices.

Chip Ferrite Bead Replacement Considerations

Consult the official Murata downsizing alternatives guide for verified substitute part numbers. Direct replacements must match the 400 Ohm impedance, 125 mA current rating, and 0201 package dimensions to ensure compatibility.