BLM18BB331SH1D

Chip Ferrite Bead Overview

The Murata BLM18BB331SH1D is a single-line ferrite chip bead in the BLM18_H series, designed for high-frequency noise suppression. 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 400 mA and has a maximum DC resistance of 580 mOhms. Housed in a compact 0603 (1608 metric) surface-mount package measuring 1.6 mm x 0.8 mm x 0.8 mm, it operates within a temperature range of -55°C to +125°C. This part is qualified under AEC-Q200 standards for automotive reliability.

Chip Ferrite Bead Feature Summary

• Suppresses high-frequency electromagnetic interference on signal or power lines
• Single-line configuration for compact circuit integration
• Automotive-grade qualification ensuring reliability in harsh environments

Chip Ferrite Bead Applications

• High-frequency noise suppression on digital signal lines
• Power line filtering in automotive electronic control units
• EMI reduction in compact consumer electronics modules

Chip Ferrite Bead Procurement Notes

Verify the complete part number including suffixes to ensure correct impedance and packaging specifications. Confirm AEC-Q200 qualification status if automotive application requirements are mandatory. Check datasheet for specific impedance curves relative to operating frequency and current derating characteristics before finalizing design integration.

Chip Ferrite Bead Selection Notes

Select this component when a 330 Ohm impedance at 100 MHz is required for noise attenuation. Ensure the 400 mA current rating exceeds the maximum expected DC load to prevent saturation. The 0603 footprint suits space-constrained layouts. Verify compatibility with reflow soldering profiles specified in the manufacturer's mounting guidelines.

Chip Ferrite Bead Part Context

This ferrite bead belongs to the BLM18_H series from Murata Electronics, which offers various impedance values in the standard 0603 package. The series provides options for different current ratings and impedance levels to suit diverse EMI suppression needs across industrial and automotive sectors while maintaining consistent physical dimensions.

Chip Ferrite Bead Replacement Considerations

Cross-reference other BLM18_H series variants such as BLM18BB151SH1D or BLM18BD421SH1D for different impedance requirements. Verify that any substitute maintains the same 0603 footprint, current handling capacity, and AEC-Q200 qualification if automotive use is intended.