BLM21SP700BH1D

Chip Ferrite Bead Overview

The BLM21SP700BH1D is a single-line ferrite chip bead from the Murata EMIFIL BLM21 series, designed for surface mount applications in the 0805 (2012 metric) package. It provides an impedance of 70 Ohms at 100 MHz with a tolerance of 25%. The component supports a maximum DC current of 6A and features a maximum DC resistance of 45 mOhms. It operates within a temperature range of -55°C to +125°C and meets RoHS3 standards.

Chip Ferrite Bead Feature Summary

• High current handling capability suitable for power line filtering
• Compact 0805 surface mount footprint for space-constrained designs
• Automotive-grade reliability with AEC-Q200 qualification

Chip Ferrite Bead Applications

• Power supply noise suppression circuits
• EMI filtering on high-current data lines
• Automotive electronic system protection

Chip Ferrite Bead Procurement Notes

Verify that the suffix BH1D corresponds to the specific packaging and tape/reel configuration required for your assembly process. Confirm that the 6A rated current aligns with your circuit's peak load requirements. Ensure the 0805 package dimensions fit within your PCB layout constraints before finalizing procurement.

Chip Ferrite Bead Selection Notes

Select this component when filtering power lines requiring high current capacity up to 6A. The 70 Ohm impedance at 100 MHz targets specific frequency ranges for EMI reduction. Consider the low DC resistance of 45 mOhms to minimize voltage drop and power loss in high-current paths compared to higher impedance alternatives.

Chip Ferrite Bead Part Context

This part belongs to the Murata BLM21SP series, which specializes in high-current ferrite beads. It complements other variants like the BLM21PG and BLM21BD series, offering a balance between impedance performance and current handling. The SP designation indicates its suitability for power line applications within the broader EMIFIL family.

Chip Ferrite Bead Replacement Considerations

BLM21SP700SN1D serves as a verified substitute within the same series, maintaining identical electrical characteristics including 70 Ohm impedance and 6A current rating while potentially differing only in packaging or reel specifications.