BLM18EG121SN1D

Chip Ferrite Bead Overview

The Murata BLM18EG121SN1D is a single-line ferrite bead in the EMIFIL BLM18EG series, housed in an EIA 0603 (1608 metric) surface-mount package measuring 1.60mm x 0.80mm with a maximum height of 0.95mm. It provides an impedance of 120 Ohms at 100 MHz and supports a rated current of 2A. The component features a maximum DC resistance of 40 milliohms and operates within a temperature range of -55°C to +125°C.

Chip Ferrite Bead Feature Summary

• Designed for high-current applications with low DC resistance to minimize power loss.
• Nickel barrier electrode structure ensures excellent soldering heat resistance.
• Single-line configuration eliminates the need for ground connections in circuits.

Chip Ferrite Bead Applications

• EMI suppression filters for general electronic equipment
• Power line noise filtering in industrial systems
• Noise reduction in portable consumer devices

Chip Ferrite Bead Procurement Notes

Verify the specific suffix SN1D against official Murata documentation to confirm packaging and tape specifications. 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 circuits requiring robust noise suppression on power lines where space is limited. The 0603 footprint suits dense PCB layouts, while the 2A rating accommodates moderate current loads. Verify thermal performance under continuous operation conditions.

Chip Ferrite Bead Part Context

This part belongs to the Murata EMIFIL BLM18EG series, which focuses on high-performance ferrite beads for general-purpose use. The series is characterized by its ability to handle significant currents while maintaining effective high-frequency attenuation in compact surface-mount packages.

Chip Ferrite Bead Replacement Considerations

BLM18PG121SN1D offers similar electrical characteristics but may differ in DC resistance values. Verify compatibility with existing board designs when substituting components from different sub-series within the same manufacturer lineup.

Chip Ferrite Bead FAQ

Does the BLM18EG121SN1D require a ground connection?

No, as a single-line ferrite bead, it does not require a ground connection for proper operation.

What is the maximum operating temperature?

The component is rated for operation up to +125°C.