BLM18EG391TN1D

Chip Ferrite Bead Overview

The Murata BLM18EG391TN1D is a single ferrite bead in a 0603 (1608 metric) surface-mount package. It provides an impedance of 390 Ω at 100 MHz with a maximum DC resistance of 300 mΩ and a rated current of 500 mA. The component operates within a temperature range of -55°C to +125°C.

Chip Ferrite Bead Feature Summary

• Provides high-impedance attenuation for high-frequency noise suppression
• Designed for surface-mount assembly on printed circuit boards
• Constructed from ferrite material for effective electromagnetic interference filtering

Chip Ferrite Bead Applications

• General-purpose EMI suppression filters
• High-speed signal line noise reduction
• Power supply input/output filtering

Chip Ferrite Bead Procurement Notes

Verify the specific suffix 'TN1D' against official Murata documentation to confirm tape-and-reel packaging orientation and terminal configuration. Ensure the selected variant matches the required impedance tolerance and current rating specifications for the target application circuit.

Chip Ferrite Bead Selection Notes

Select this component when a 0603 footprint is constrained and a 500 mA current rating is sufficient. Compare the 390 Ω impedance profile against alternative values if higher attenuation or different current handling is required. Verify thermal management capabilities under continuous load conditions.

Chip Ferrite Bead Part Context

This part belongs to the BLM18EG series, which utilizes Murata's proprietary ferrite formulation. The series is designed for compact electronic devices requiring efficient noise suppression in limited board space without compromising current carrying capacity.

Chip Ferrite Bead Replacement Considerations

Direct substitutes include other 0603 ferrite beads with identical 390 Ω impedance and 500 mA ratings, such as the BLM18EG391SN1D, provided mechanical dimensions and electrical characteristics match exactly.