BLM15PX121SN1D

Chip Ferrite Bead Overview

The Murata BLM15PX121SN1D is a single-line ferrite chip bead designed for power supply circuits requiring high rated current. It features an impedance of 120 Ohms at 100 MHz with a tolerance of ±25%. The component supports a maximum DC current of 2 A and maintains a low DC resistance of 0.055 Ohms. Housed in a compact 0402 (1005 metric) surface-mount package measuring 1 mm x 0.5 mm x 0.5 mm, it operates within a temperature range of -55°C to +125°C.

Chip Ferrite Bead Feature Summary

• Engineered for power supply applications demanding high current handling capabilities
• Provides effective noise suppression in GHz frequency bands without requiring ground connections
• Features nickel barrier layers on external electrodes to ensure superior soldering heat resistance

Chip Ferrite Bead Applications

• Power supply circuit noise filtering
• EMI suppression in portable devices
• Data line noise suppression

Chip Ferrite Bead Procurement Notes

Verify the specific suffix SN1D against official Murata documentation to confirm packaging configuration and compliance status. Ensure the selected variant matches the required current rating and impedance specifications for the target power supply application before finalizing procurement orders.

Chip Ferrite Bead Selection Notes

Select this component when designing circuits that require high current capacity alongside EMI suppression. The 0402 footprint suits space-constrained layouts. Confirm that the 2 A rating aligns with peak load requirements and that the 120 Ohm impedance provides sufficient attenuation at the targeted interference frequencies.

Chip Ferrite Bead Part Context

This part belongs to the BLM15PX series, which distinguishes itself through enhanced current handling compared to standard ferrite beads. It is part of Murata's EMIFIL family, specifically optimized for suppressing high-frequency noise in digital and power lines where significant DC bias currents are present.

Chip Ferrite Bead Replacement Considerations

Direct substitutes include other BLM15 series variants with matching 0402 footprints and similar impedance characteristics, such as BLM15PD or BLM15EG series components, provided their current ratings meet the 2 A requirement.