BLM21BD751SZ1D

Chip Ferrite Bead Overview

The Murata BLM21BD751SZ1D is a single-line ferrite bead in an 0805 (2012 metric) surface-mount package. It provides an impedance of 750 Ohms at 100 MHz with a maximum DC resistance of 450 mOhms and a rated current of 250 mA. The component operates within a temperature range of -55°C to +125°C and meets AEC-Q200 automotive qualification standards.

Chip Ferrite Bead Feature Summary

• Provides high-impedance noise suppression for signal lines in the 100 MHz frequency range
• Automotive-grade reliability certified under AEC-Q200 standards
• Compact 0805 footprint designed for dense surface-mount circuit layouts

Chip Ferrite Bead Applications

• Noise filtering in automotive electronic control units
• Signal line protection in industrial equipment
• High-frequency interference suppression in consumer electronics

Chip Ferrite Bead Procurement Notes

Verify the specific suffix 'SZ1D' against official Murata documentation to confirm packaging configuration, as ordering codes determine reel or cut-tape delivery. Ensure the selected variant matches the required impedance tolerance and current rating for the target application circuit.

Chip Ferrite Bead Selection Notes

Select this component when a 750 Ohm impedance at 100 MHz is required for a single signal line. The 250 mA current rating suits low-power signal paths rather than power distribution. Verify that the 0805 package dimensions fit the PCB layout constraints and that the thermal characteristics support the operating environment.

Chip Ferrite Bead Part Context

This part belongs to the Murata EMIFIL BLM21 series of chip ferrite beads. The series offers various impedance values and current ratings in standardized packages. The BLM21BD751SZ1D specifically targets applications requiring moderate noise attenuation with automotive-grade durability in a compact form factor.

Chip Ferrite Bead Replacement Considerations

Direct substitutes include other BLM21 series parts with identical 750 Ohm impedance and 0805 package, such as BLM21BD751SN1D. Verify equivalent current ratings and DC resistance before substitution to ensure circuit performance remains unchanged.