BLM18TG121TN1D

Chip Ferrite Bead Overview

The Murata BLM18TG121TN1D is a surface-mount ferrite bead in the 0603 (1608 metric) package. It provides an impedance of 120 Ohms at 100 MHz with a tolerance of 25%. The component supports a maximum DC current of 200 mA and has a maximum DC resistance of 250 mOhms. It operates within a temperature range of -55°C to +125°C.

Chip Ferrite Bead Feature Summary

• Designed as a noise resistor to significantly reduce resonance possibilities and minimize signal waveform distortion near ground connections.
• Effective for EMI suppression in circuits lacking stable ground lines due to single-line configuration without requiring ground connection.
• Features nickel barrier structure external electrodes providing excellent soldering heat resistance.

Chip Ferrite Bead Applications

• EMI suppression filters
• Power line filtering
• Noise reduction in digital circuits

Chip Ferrite Bead Procurement Notes

Verify the specific suffix TN1D against official Murata documentation to confirm packaging and tape specifications. Confirm availability status as some distributors list this part as discontinued or limited stock. Ensure compatibility with RoHS and REACH regulations if required by your manufacturing standards.

Chip Ferrite Bead Selection Notes

Select this component when low current handling around 200 mA is sufficient for the power line application. The 0603 footprint suits compact board designs. Consider the TG series characteristics for general noise suppression where high current capacity is not the primary requirement compared to KG or P series variants.

Chip Ferrite Bead Part Context

This part belongs to the Murata BLM18 series of chip ferrite beads. The series utilizes ferrite materials to absorb electromagnetic interference. The BLM18TG variant specifically targets applications requiring moderate current ratings with standard impedance characteristics for general-purpose noise filtering in consumer and industrial electronics.

Chip Ferrite Bead Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult Murata's SimSurfing tool or official datasheets for cross-referencing similar impedance and current rating components within the BLM18 family.