BLM03HD331SN1D

Chip Ferrite Bead Overview

The Murata Electronics BLM03HD331SN1D is a single-line ferrite chip bead from the EMIFIL BLM03H series, designed for high-frequency noise suppression in compact surface-mount applications. It features 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 200 mA and has a maximum DC resistance of 1 Ohm. Housed in a 0201 (0603 metric) package measuring 0.6 mm in length, 0.3 mm in width, and 0.3 mm in height, it operates within a temperature range of -55°C to +125°C.

Chip Ferrite Bead Feature Summary

• Provides effective high-frequency noise attenuation for signal lines through ferrite material properties.
• Utilizes a miniature 0201 footprint to support dense circuit board layouts.
• Maintains stable electrical characteristics across a wide industrial temperature range.

Chip Ferrite Bead Applications

• High-speed digital signal line filtering
• Clock circuit noise suppression
• Data bus interference reduction

Chip Ferrite Bead Procurement Notes

Verify the specific suffix SN1D against official Murata documentation to confirm packaging configuration and tape-and-reel specifications. Ensure that the 200 mA current rating aligns with the target circuit's operational requirements. Cross-reference the 330 Ohm impedance value at 100 MHz with the design schematic to confirm adequate noise suppression performance for the intended frequency spectrum.

Chip Ferrite Bead Selection Notes

Select this component when space constraints necessitate a 0201 package size while requiring significant impedance at 100 MHz. The 200 mA current rating suits low-power signal lines rather than power distribution networks. Consider the 1 Ohm DC resistance impact on signal integrity if the driving source has low output impedance. Verify compatibility with standard reflow soldering profiles for 0201 ferrite beads.

Chip Ferrite Bead Part Context

This part belongs to the Murata EMIFIL BLM03H series, which focuses on high-impedance ferrite beads for advanced miniaturization. The BLM03H series offers higher impedance values compared to standard BLM03 variants, making it suitable for suppressing narrowband noise in sensitive RF and high-speed digital interfaces where smaller form factors are critical.

Chip Ferrite Bead Replacement Considerations

Consult the official Murata BLM03H series substitution guide for verified alternatives. Direct replacements must match the 0201 package dimensions, 330 Ohm impedance at 100 MHz, and 200 mA current rating. Generic ferrite beads may not provide equivalent high-frequency performance or thermal stability.