BLM18BB750SZ1D

Chip Ferrite Bead Overview

The Murata BLM18BB750SZ1D is a single-line chip ferrite bead in the EMIFIL BLM18 series, housed in a 0603 (1608 metric) surface-mount package. It provides an impedance of 75 Ohms at a test frequency of 100 MHz with a maximum DC resistance of 700 mOhms and a tolerance of 25%. The component supports a maximum DC current of 300 mA and operates within a temperature range of -55°C to +125°C. It meets AEC-Q200 automotive qualification standards and complies with RoHS3 regulations.

Chip Ferrite Bead Feature Summary

• Provides high-frequency noise suppression through resistive loss characteristics at 100 MHz
• Automotive-grade reliability certified under AEC-Q200 standards for harsh environments
• Compact unshielded design suitable for dense surface-mount circuit board layouts

Chip Ferrite Bead Applications

• Noise filtering on power supply lines in automotive electronic control units
• Signal integrity protection for data buses in vehicle infotainment systems
• EMI suppression on I/O ports of automotive sensors and actuators

Chip Ferrite Bead Procurement Notes

Verify the specific suffix against official Murata documentation to confirm exact electrical tolerances and packaging configurations. Ensure the selected variant matches the required DC current rating and impedance specifications for the target application. Confirm compliance with RoHS3 directives and AEC-Q200 automotive qualification requirements before finalizing procurement orders.

Chip Ferrite Bead Selection Notes

Select this component when a 0603 footprint is required for automotive applications needing 75 Ohms attenuation at 100 MHz. Evaluate the 300 mA current limit to ensure it exceeds the operating current of the protected line. Consider the 700 mOhms DC resistance impact on voltage drop compared to lower-resistance alternatives if efficiency is critical.

Chip Ferrite Bead Part Context

This part belongs to the Murata EMIFIL BLM18 series, which offers various impedance values in a standardized 0603 case size. The series is widely used in automotive electronics due to its robust construction and consistent performance across wide temperature ranges. It serves as a passive filter solution for suppressing electromagnetic interference in compact digital and analog circuits.

Chip Ferrite Bead Replacement Considerations

Cross-reference with BLM18BA750SZ1D or BLM18BB750SN1D for similar impedance and package dimensions. Verify that alternative suffixes match the required current handling and DC resistance parameters. Confirm that substitute parts maintain AEC-Q200 certification if automotive qualification is mandatory for the design.