BLM03PX121SN1D

Chip Ferrite Bead Overview

The BLM03PX121SN1D is a single ferrite chip bead from the Murata BLM03_SN series, designed for surface-mount technology in a compact 0201 (0603 metric) package measuring 0.6 mm in length, 0.3 mm in width, and 0.3 mm in height. It provides an impedance of 120 Ohms at a test frequency of 100 MHz with a tolerance of 25%. The component supports a maximum DC current of 900 mA and exhibits a maximum DC resistance of 160 mOhms. It operates within a temperature range of -55°C to +125°C.

Chip Ferrite Bead Feature Summary

• Provides high-frequency noise suppression through ferrite material properties
• Designed for space-constrained surface-mount applications
• Capable of handling significant direct current loads

Chip Ferrite Bead Applications

• General electronic circuit noise filtering
• Power supply line conditioning
• Signal integrity management in compact devices

Chip Ferrite Bead Procurement Notes

Verify the specific suffix 'SN1D' against official Murata documentation to confirm exact impedance and current ratings. Ensure the ordering information matches the required 0201 package dimensions and RoHS compliance status before finalizing procurement. Cross-reference the manufacturer part number with authorized distributor lists to avoid counterfeit components.

Chip Ferrite Bead Selection Notes

Select this component when a low-profile 0201 footprint is required for circuits carrying up to 900 mA. The 120 Ohm impedance at 100 MHz makes it suitable for suppressing interference in that frequency band. Consider the 160 mOhms DC resistance for voltage drop calculations in power-sensitive designs.

Chip Ferrite Bead Part Context

This component belongs to the BLM03_SN series of ferrite beads manufactured by Murata Electronics. The series offers various impedance values within the same 0201 form factor, allowing designers to select appropriate noise suppression characteristics without altering the board layout footprint.

Chip Ferrite Bead Replacement Considerations

Consult Murata's official substitution guide for equivalent parts within the BLM03 series. Verify that any alternative maintains the 0201 package size, 900 mA current rating, and 120 Ohm impedance specification.