BLM18EG121SZ1D

Chip Ferrite Bead Overview

The Murata BLM18EG121SZ1D is a single-line chip ferrite bead in the EMIFIL BLM18EG series, designed for EMI suppression. It features a 0603 (1608 metric) surface-mount package with dimensions of 1.6 mm length, 0.8 mm width, and 0.6 mm height. The component provides an impedance of 120 Ohms at a test frequency of 100 MHz with a tolerance of ±25%. It supports a maximum DC current of 2 A and has a maximum DC resistance of 40 mOhms. The device operates within a temperature range of -55°C to +125°C and holds AEC-Q200 qualification.

Chip Ferrite Bead Feature Summary

• Provides high-impedance noise attenuation for power and signal lines without requiring a ground connection.
• Features a nickel barrier electrode structure to ensure excellent soldering heat resistance during assembly.
• Designed to minimize resonance risks, thereby preserving signal waveform integrity in low-impedance circuits.

Chip Ferrite Bead Applications

• EMI suppression filters for general electronic equipment
• Noise filtering in portable devices
• Power line conditioning in industrial applications

Chip Ferrite Bead Procurement Notes

Verify the specific suffix 'Z1D' against official Murata documentation to confirm tape-and-reel packaging specifications and compliance status. Ensure the selected variant matches the required impedance tolerance and current rating for the target circuit design before finalizing procurement orders.

Chip Ferrite Bead Selection Notes

Select this component for applications requiring robust EMI suppression in space-constrained designs. The 0603 footprint allows for compact PCB layouts while handling up to 2 A of DC current. Consider the 40 mOhm DCR when evaluating voltage drop requirements in power distribution networks.

Chip Ferrite Bead Part Context

This part belongs to the Murata BLM18EG series of multi-layer ferrite beads. These components are engineered for use in both power and signal lines where effective noise reduction is critical. The series offers various impedance values to suit different frequency ranges and circuit impedances.

Chip Ferrite Bead Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with alternative ferrite beads based on impedance curves and physical dimensions if substitution is necessary.

Chip Ferrite Bead FAQ

Does the BLM18EG121SZ1D require a ground connection?

No, these chip ferrite beads do not require a ground connection, making them suitable for circuits without stable grounding.

What is the maximum operating temperature?

The maximum operating temperature for this component is +125°C.