BLM18HB331SN1D

Chip Ferrite Bead Overview

The Murata BLM18HB331SN1D is a single-line chip ferrite bead in the EMIFIL BLM18HB series, designed for surface-mount assembly. It features a 0603 (1608 metric) package with dimensions of 1.6 mm length, 0.8 mm width, and 0.8 mm height. The component provides an impedance of 330 Ohms at a test frequency of 100 MHz with a tolerance of 25%. It supports a maximum DC current of 50 mA and has a maximum DC resistance of 1.2 Ohms. The device operates within a temperature range of -55°C to +125°C.

Chip Ferrite Bead Feature Summary

• Provides high-impedance noise suppression for signal lines in compact surface-mount designs
• Engineered for stable performance across wide industrial temperature ranges
• Utilizes low-profile 0603 footprint to optimize board space utilization

Chip Ferrite Bead Applications

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

Chip Ferrite Bead Procurement Notes

Verify the specific suffix SN1D against official Murata documentation to confirm packaging configuration 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 0603 ferrite bead with 330 Ohm impedance is required for low-current signal paths. Consider the 50 mA current limit and 1.2 Ohm DC resistance to ensure minimal voltage drop and thermal impact in sensitive signal chains.

Chip Ferrite Bead Part Context

This part belongs to the Murata BLM18HB series, which offers specialized characteristics distinct from standard BLM18BB or BLM18KG variants. The HB series is optimized for specific impedance profiles suitable for general-purpose noise suppression in consumer electronics where space constraints are critical.

Chip Ferrite Bead Replacement Considerations

Direct substitutes include other Murata BLM18HB331SN1D units. Cross-brand replacements require matching 0603 size, 330 Ohm @ 100 MHz impedance, and compatible current ratings.