BLM18DN221SH1D

Chip Ferrite Bead Overview

The Murata BLM18DN221SH1D is a single-channel ferrite chip bead in the BLM18_H series, housed in a 0603 (1608 metric) SMD package. It provides an impedance of 150 Ohms at 100 MHz with a tolerance of 25%. The component supports a maximum DC current of 1.4 A and features a maximum DC resistance of 120 mOhms. It operates within a temperature range of -55°C to +125°C and holds AEC-Q200 qualification for automotive reliability.

Chip Ferrite Bead Feature Summary

• Provides high-impedance noise suppression for signal lines in compact surface-mount designs
• Engineered for automotive applications with AEC-Q200 qualification standards
• Supports high continuous DC current loads while maintaining low insertion loss

Chip Ferrite Bead Applications

• Automotive electronic systems requiring EMI suppression
• Signal line filtering in mobile devices
• General-purpose noise reduction in consumer electronics

Chip Ferrite Bead Procurement Notes

Verify the specific impedance value against design requirements, as datasheet listings may vary between 150 Ohms and 220 Ohms for this part number prefix. Confirm the manufacturer source is Murata Electronics and check for RoHS compliance status. Ensure the ordering suffix matches the required packaging format such as cut tape or reel.

Chip Ferrite Bead Selection Notes

Select this component when a 0603 footprint is required for high-current signal filtering. The 1.4 A rating distinguishes it from lower-current variants in the same series. Consider the 150 Ohm impedance profile for specific frequency attenuation needs rather than higher impedance alternatives like the 221 series.

Chip Ferrite Bead Part Context

This component belongs to the BLM18_H series of EMIFIL ferrite beads designed for general use. It shares the standard 0603 dimensions with other members of the family but offers specific electrical characteristics tailored for signal line protection. The series is widely used in automotive and industrial applications.

Chip Ferrite Bead Replacement Considerations

BLM18DN151SH1D is a verified substitute offering identical form factor and current handling with 150 Ohms impedance. For higher impedance needs, BLM18SP221SN1D serves as an alternative non-automotive option.