BLM15PX121SH1D

Chip Ferrite Bead Overview

The Murata BLM15PX121SH1D is a single-line chip ferrite bead in the BLM15PX series, designed for EMI suppression in power and signal lines. It features an impedance of 120 Ohms at 100 MHz with a maximum DC resistance of 55 milliohms. The component supports a rated current of 2 Amperes and operates within a temperature range of -55°C to +125°C. Housed in a compact 0402 (1005 metric) surface-mount package measuring 1.00mm x 0.50mm x 0.55mm, it meets AEC-Q200 automotive qualification standards.

Chip Ferrite Bead Feature Summary

• Provides effective high-frequency noise attenuation for GHz-band signal lines
• Eliminates the need for stable grounding connections due to unshielded design
• Features nickel barrier layers on external electrodes for superior soldering heat resistance

Chip Ferrite Bead Applications

• EMI suppression in notebook PCs and digital still cameras
• Noise suppression for data transmission lines
• Prevention of errors caused by local oscillator signals in mobile phones

Chip Ferrite Bead Procurement Notes

Verify the specific suffix SH1D against official Murata documentation to confirm packaging configuration and RoHS compliance status. Ensure the procurement channel provides valid traceability for AEC-Q200 certified automotive-grade components. Cross-reference the full part number to distinguish from similar BLM15 series variants with different current ratings or impedance values.

Chip Ferrite Bead Selection Notes

Select this component when space constraints require a 0402 footprint with a 2A current rating. The low DC resistance minimizes voltage drop in power delivery networks. Verify that the 120 Ohm impedance at 100 MHz aligns with the target noise frequency spectrum. Confirm compatibility with reflow soldering profiles given the nickel barrier construction.

Chip Ferrite Bead Part Context

This device belongs to the BLM15PX series of EMIFIL chip ferrite beads manufactured by Murata Electronics. The series is engineered for suppressing electromagnetic interference in portable electronic devices and automotive infotainment systems. It utilizes multi-layer ferrite technology to achieve high impedance characteristics in a miniature form factor suitable for dense PCB layouts.

Chip Ferrite Bead Replacement Considerations

Consult the official Murata BL Part Number Guide for verified substitutes. Equivalent options may include other BLM15 series variants with matching 120 Ohm impedance and 0402 dimensions. Ensure any replacement maintains AEC-Q200 certification if used in automotive applications.