BLM21BD102SZ1D

Chip Ferrite Bead Overview

The BLM21BD102SZ1D is a monolithic ferrite chip bead manufactured by Murata Electronics, designed for electromagnetic interference (EMI) suppression in surface-mount applications. It features an impedance of 1 kΩ at 100 MHz and supports a maximum rated current of 250 mA. The component has a maximum DC resistance of 400 mΩ and operates within a temperature range of -55°C to +125°C. Housed in an unshielded 0805 (2012 metric) package with dimensions of 2 mm length, 1.25 mm width, and 0.85 mm height, it provides single-line filtering capability.

Chip Ferrite Bead Feature Summary

• Monolithic construction utilizing ferrite material for effective high-frequency noise attenuation
• Unshielded design suitable for standard surface-mount assembly processes
• Single-line configuration optimized for compact circuit board layouts

Chip Ferrite Bead Applications

• EMI suppression filters for general electronic circuits
• Noise reduction on high-speed signal lines
• Power supply line filtering in portable devices

Chip Ferrite Bead Procurement Notes

Verify the specific suffix 'SZ1D' against official Murata documentation to confirm packaging details and compliance status. Ensure the selected variant matches the required 0805 footprint and electrical specifications for your design. Cross-reference the manufacturer's latest datasheet to validate RoHS and REACH compliance before finalizing procurement orders.

Chip Ferrite Bead Selection Notes

Select this component when a 1 kΩ impedance at 100 MHz is required for EMI suppression in space-constrained designs. The 0805 package offers a balance between current handling capacity and board area efficiency. Consider the 250 mA current rating and 400 mΩ DC resistance to ensure compatibility with the target circuit's power requirements and signal integrity needs.

Chip Ferrite Bead Part Context

This part belongs to the Murata BLM21 series of ferrite beads, which are widely used for noise suppression in various electronic equipment. The BLM21BD sub-series specifically targets applications requiring robust performance in standard surface-mount packages. These components are integral to maintaining signal integrity and reducing electromagnetic interference in modern consumer and industrial electronics.

Chip Ferrite Bead Replacement Considerations

Publicly confirmed substitute part numbers for BLM21BD102SZ1D were not identified in the provided source materials. Verify compatibility with alternative ferrite beads based on impedance, current rating, and package dimensions if substitution is necessary.