BLM02AX121SN1D

Chip Ferrite Bead Overview

The Murata BLM02AX121SN1D is a single ferrite chip bead in the BLx02AX series, designed for surface-mount applications. It features a 0402 (1005 metric) package with dimensions of 1.0 mm length, 0.5 mm width, and 0.5 mm height. The component provides an impedance of 120 Ohms at 100 MHz with a tolerance of 25%. It supports a maximum DC current of 250 mA and has a maximum DC resistance of 90 mOhms. The operating temperature range spans from -55°C to +125°C.

Chip Ferrite Bead Feature Summary

• Provides high-frequency noise suppression through ferrite material properties
• Compact 0402 footprint suitable for space-constrained designs
• Single-line configuration for simple circuit integration

Chip Ferrite Bead Applications

• General EMI suppression filters
• Power supply line filtering
• Signal integrity protection in compact electronics

Chip Ferrite Bead Procurement Notes

Verify the specific suffix SN1D against official Murata documentation to confirm packaging and tape-and-reel specifications. Ensure the selected variant matches the required impedance tolerance and current rating for the target application. Cross-reference datasheet revisions to confirm compliance with current RoHS and REACH standards before finalizing procurement orders.

Chip Ferrite Bead Selection Notes

Select this component when a 0402 footprint is required for 120 Ohm noise suppression. Compare the 250 mA current rating against peak load requirements to prevent saturation. Evaluate the 90 mOhms DC resistance impact on voltage drop. Consider thermal performance within the -55°C to +125°C range relative to the enclosure environment.

Chip Ferrite Bead Part Context

This part belongs to the Murata BLx02AX series of ferrite beads. These components are engineered for general-purpose EMI suppression in portable and industrial devices. The series offers various impedance values within the standard 0402 case size, allowing designers to tailor noise filtering characteristics without altering the board layout footprint.

Chip Ferrite Bead Replacement Considerations

Check Murata's alternate sizing guide for direct pin-compatible substitutes with different impedance ratings. Verify that any replacement maintains the same 0402 package dimensions and current handling capabilities to ensure mechanical and electrical compatibility.