BLM18BD252SN1D

Chip Ferrite Bead Overview

The Murata BLM18BD252SN1D is a single-line ferrite bead chip component designed for surface-mount technology. It operates within the EMIFIL BLM18 series and utilizes a 0603 (1608 metric) package with dimensions of 1.6mm length, 0.8mm width, and a maximum height of 0.95mm. The device provides an impedance of 2500 Ohms at 100 MHz with a tolerance of 25%. It supports a maximum DC current of 150mA and features a maximum DC resistance of 1.5 Ohms. The component functions reliably across a temperature range of -55°C to +125°C.

Chip Ferrite Bead Feature Summary

• Provides high-impedance noise suppression for single signal lines in compact surface-mount designs
• Engineered for effective electromagnetic interference filtering in high-frequency applications
• Constructed with robust materials suitable for operation across extended industrial temperature ranges

Chip Ferrite Bead Applications

• High-speed signal line noise suppression
• EMI suppression filters
• Audio line noise filtering

Chip Ferrite Bead Procurement Notes

Verify the specific suffix SN1D against official Murata documentation to confirm packaging configuration and tape-and-reel specifications. Ensure that the 150mA current rating aligns with the target circuit's operational requirements to prevent performance degradation. Cross-reference the 0603 footprint dimensions with PCB layout guidelines to guarantee proper solder joint integrity during assembly processes.

Chip Ferrite Bead Selection Notes

Select this component when a higher impedance value than standard low-noise beads is required for specific frequency bands. The 1.5 Ohm DC resistance may impact low-voltage sensitive circuits; verify voltage drop calculations. Consider the 150mA current limit carefully, as it is lower than many general-purpose power rails, necessitating dedicated signal line usage rather than power distribution paths.

Chip Ferrite Bead Part Context

This part belongs to the Murata EMIFIL BLM18 family, which offers various impedance values and current ratings in the 0603 package. The BD suffix typically denotes specific material characteristics optimized for certain frequency responses. This series is widely used in consumer electronics and industrial equipment where space-constrained EMI mitigation is critical for signal integrity.

Chip Ferrite Bead Replacement Considerations

Direct substitutes must match the 2500 Ohm @ 100 MHz impedance, 150mA current rating, and 0603 footprint. Verify equivalent DC resistance and temperature coefficients. Alternative parts from other manufacturers require careful validation of impedance curves and physical dimensions to ensure compatibility with existing footprints.