BLM18BD331SN1D

Chip Ferrite Bead Overview

The Murata BLM18BD331SN1D is a single-line ferrite chip bead in the EMIFIL BLM18 series, housed in a 0603 (1608 metric) surface-mount 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 200 mA and features a maximum DC resistance of 500 mOhms. It operates within a temperature range of -55°C to +125°C and measures 1.6 mm in length, 0.8 mm in width, and 0.95 mm in height.

Chip Ferrite Bead Feature Summary

• Provides electromagnetic interference suppression for signal lines through high-impedance characteristics at specific frequencies.
• Designed for surface-mount assembly using standard SMD/SMT termination styles.
• Constructed as a single-line ferrite bead suitable for compact circuit board layouts.

Chip Ferrite Bead Applications

• Signal line noise filtering
• Electromagnetic interference suppression
• High-frequency circuit protection

Chip Ferrite Bead Procurement Notes

Verify the complete part number including suffixes to ensure correct impedance and packaging specifications. Confirm RoHS compliance status and moisture sensitivity level requirements against project standards. Cross-reference datasheet electrical parameters such as DC resistance and current ratings with system design constraints before finalizing procurement orders.

Chip Ferrite Bead Selection Notes

Select this component when a 0603 footprint is required for signal integrity management. Ensure the 200 mA current rating meets the operational load without saturation. Verify that the 330 Ohm impedance profile effectively targets the specific noise frequencies present in the application environment.

Chip Ferrite Bead Part Context

This component belongs to the Murata EMIFIL BLM18 series of ferrite beads. The series offers various impedance values and current ratings within standardized 0603 packages. These components are engineered for general-purpose EMI suppression in portable and industrial electronic devices requiring reliable noise reduction.

Chip Ferrite Bead Replacement Considerations

BCAS160808A331 by Max Echo is listed as a parameter-equivalent substitute. Verify mechanical dimensions and electrical performance curves before implementation.

Chip Ferrite Bead FAQ

What is the test frequency for the specified impedance?

The impedance of 330 Ohms is measured at a test frequency of 100 MHz.

Does this component support automotive applications?

Public documentation does not confirm AEC-Q200 qualification for this specific part number; verification against official datasheets is required.