BLM21PG331SH1D

Chip Ferrite Bead Overview

The BLM21PG331SH1D is a single-line ferrite bead manufactured by Murata Electronics, designed for surface-mount assembly in the 0805 (2012 Metric) package. It provides an impedance of 330 ohms at a test frequency of 100 MHz with a tolerance of ±25%. The component supports a maximum DC current of 1.5 A and exhibits a maximum DC resistance of 70 milliohms. It operates within a temperature range of -55°C to +125°C.

Chip Ferrite Bead Feature Summary

• Provides high-frequency noise suppression through significant impedance characteristics at 100 MHz
• Engineered for automotive infotainment and general electronic applications requiring compact filtering
• Features low DC resistance to minimize power loss while maintaining signal integrity

Chip Ferrite Bead Applications

• Automotive infotainment systems
• Power line filtering in electronic circuits
• High-frequency noise suppression on data lines

Chip Ferrite Bead Procurement Notes

Verify the specific suffix SH1D against official Murata documentation to confirm packaging details and tape-and-reel specifications. Ensure the selected variant matches the required impedance tolerance and current rating for the target application circuit design.

Chip Ferrite Bead Selection Notes

Select this component when a 0805 footprint is required for space-constrained designs. The 330-ohm impedance value is suitable for attenuating high-frequency interference. Confirm that the 1.5 A current rating exceeds the maximum operating current of the protected line to prevent saturation or excessive heating.

Chip Ferrite Bead Part Context

This part belongs to the Murata BLM series of ferrite beads, which are widely used for EMI suppression. The BLM21 series specifically denotes the 0805 package size, offering a balance between current handling capability and physical footprint for standard PCB layouts.

Chip Ferrite Bead Replacement Considerations

Consult official Murata substitution guides for equivalent parts with matching impedance and current ratings. Verify package compatibility before replacing with generic alternatives.