BLM18SG121TN1D

Chip Ferrite Bead Overview

The Murata BLM18SG121TN1D is a single-line chip ferrite bead in a 0603 (1608 metric) surface-mount package. It provides an impedance of 120 Ohms at 100 MHz with a tolerance of 25%. The component supports a maximum DC current of 3 A and has a maximum DC resistance of 25 mOhms. It operates within a temperature range of -55°C to +125°C. Physical dimensions are 1.6 mm in length, 0.8 mm in width, and 0.8 mm in height.

Chip Ferrite Bead Feature Summary

• Provides electromagnetic interference suppression through high magnetic permeability ferrite material.
• Designed for low insertion loss to maintain signal integrity in power lines.
• Compact 0603 footprint suitable for space-constrained printed circuit board layouts.

Chip Ferrite Bead Applications

• Electromagnetic interference filtering for power supply circuits
• Noise suppression in portable electronic devices
• Signal conditioning in industrial control systems

Chip Ferrite Bead Procurement Notes

Verify the complete part number against official Murata documentation to ensure correct impedance, current rating, and termination specifications. Confirm RoHS compliance status and moisture sensitivity level requirements prior to integration into the manufacturing process.

Chip Ferrite Bead Selection Notes

Select this component when designing circuits requiring effective noise attenuation at 100 MHz with a 3 A current capacity. Ensure the PCB layout accommodates the 0603 package dimensions and that the thermal environment remains within the specified operating temperature range for reliable performance.

Chip Ferrite Bead Part Context

This component belongs to the Murata EMIFIL BLM18 series of chip ferrite beads. The series offers various impedance values and current ratings in standardized SMD packages for general-purpose EMI suppression applications across consumer and industrial electronics.

Chip Ferrite Bead Replacement Considerations

Consult official Murata substitution guides for equivalent parts within the BLM18 family or other manufacturers' ferrite beads with matching 120 Ohm impedance at 100 MHz and 3 A current handling capabilities.