BLM15PX121SZ1D

Chip Ferrite Bead Overview

The Murata BLM15PX121SZ1D is a single-line chip ferrite bead in the EMIFIL BLM15 series, designed for surface-mount assembly. It provides an impedance of 120 Ohms at a test frequency of 100 MHz with a maximum DC resistance of 55 mOhms. The component supports a rated current of 2 A and operates within a temperature range of -55°C to +125°C. Housed in a compact 0402 (1005 metric) package measuring 1.0 mm x 0.5 mm x 0.5 mm, it features a tolerance of ±25% and meets AEC-Q200 automotive qualification standards.

Chip Ferrite Bead Feature Summary

• Provides high-frequency noise suppression through significant impedance characteristics at 100 MHz
• Supports high-current applications with a 2 A rated current capacity
• Automotive-grade reliability certified under AEC-Q200 standards
• Compact footprint enables dense circuit board layouts

Chip Ferrite Bead Applications

• Automotive infotainment systems
• Power line filtering in electronic circuits
• Noise suppression for high-speed digital signals
• EMI reduction in automotive electronics

Chip Ferrite Bead Procurement Notes

Verify the specific suffix 'SZ1D' against official Murata documentation to confirm packaging configuration and tape-and-reel specifications. Ensure the selected variant matches the required current rating and impedance tolerance for the target application. Cross-reference the AEC-Q200 certification status if automotive compliance is mandatory. Confirm RoHS3 compliance requirements prior to final procurement decisions.

Chip Ferrite Bead Selection Notes

Select this component when a 0402 footprint is required for high-current noise filtering. The 2 A rating distinguishes it from lower-current variants like the BD series. Verify that the 120 Ohm impedance at 100 MHz aligns with the target noise spectrum. Consider the thermal performance at maximum current load. Ensure the unshielded design does not interfere with nearby sensitive components.

Chip Ferrite Bead Part Context

This part belongs to the Murata BLM15 series of chip ferrite beads, which are widely used for electromagnetic interference suppression. The PX designation indicates a specific current handling capability within the family. These components are engineered for general-purpose and automotive applications requiring reliable noise attenuation in compact form factors.

Chip Ferrite Bead Replacement Considerations

Pulse Electronics ABUP00100505121Y00 is listed as an available substitute. Verify electrical parameters including impedance, current rating, and physical dimensions before substitution. Ensure the alternative meets the same AEC-Q200 automotive qualification if required by the design.