BLM15AG121SH1D

Chip Ferrite Bead Overview

The Murata BLM15AG121SH1D is a chip ferrite bead in the BLM15_H series, housed in an SMD 0402 (1005 metric) package. It provides an impedance of 120 Ohms with a 25% tolerance at a test frequency of 100 MHz. The component supports a maximum DC current of 300 mA and has a maximum DC resistance of 350 mOhms. It operates within a temperature range of -55°C to +125°C and holds AEC-Q200 qualification for automotive reliability.

Chip Ferrite Bead Feature Summary

• AEC-Q200 qualified for automotive applications
• Designed for noise suppression in powertrain and safety systems
• Unshielded construction suitable for signal lines without stable ground

Chip Ferrite Bead Applications

• Automotive powertrain noise suppression
• Automotive safety system EMI filtering
• General high-reliability electronic circuits

Chip Ferrite Bead Procurement Notes

Verify the specific suffix 'H1D' against official Murata documentation to confirm package and tape specifications. Ensure the selected variant matches the required automotive grade and impedance tolerance for the target circuit design before finalizing procurement orders.

Chip Ferrite Bead Selection Notes

Select this component when automotive-grade reliability is required in a compact 0402 footprint. The 120 Ohm impedance at 100 MHz targets specific noise frequencies, while the 300 mA current rating suits moderate power lines. Verify that the unshielded nature aligns with the PCB layout and grounding strategy.

Chip Ferrite Bead Part Context

This part belongs to the Murata BLM15 series of multi-layer ferrite beads. These components are engineered to suppress electromagnetic interference in GHz frequency ranges. The BLM15AG121SH1D specifically utilizes the H-series designation, indicating particular material characteristics optimized for automotive environments compared to standard consumer grades.

Chip Ferrite Bead Replacement Considerations

Consult official Murata substitution guides for equivalent parts within the BLM15 family. Verify that any alternative maintains the same 0402 dimensions, 120 Ohm impedance, and AEC-Q200 certification to ensure compatibility with existing automotive designs.