BLM15PD121SZ1D

Chip Ferrite Bead Overview

The Murata BLM15PD121SZ1D is a chip ferrite bead in the 0402 (1005 metric) surface-mount 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 1.3 A and has a maximum DC resistance of 90 mOhms. It operates within a temperature range of -55°C to +125°C and holds AEC-Q200 qualification.

Chip Ferrite Bead Feature Summary

• Provides electromagnetic interference suppression through high-impedance characteristics at specific frequencies
• Designed for compact surface-mount integration in space-constrained circuit layouts
• Qualified for automotive applications ensuring reliability under specified environmental conditions

Chip Ferrite Bead Applications

• Automotive infotainment systems
• Power supply line filtering
• EMI suppression filters

Chip Ferrite Bead Procurement Notes

Verify the complete part number including suffixes to ensure correct impedance, current rating, and packaging configuration. Confirm AEC-Q200 qualification status if automotive compliance is required. Check datasheet specifications for thermal derating curves relative to ambient operating temperatures.

Chip Ferrite Bead Selection Notes

Select this component when a 0402 footprint is required with 120 Ohm impedance at 100 MHz. Ensure the circuit current does not exceed 1.3 A to prevent saturation. Verify that the low DC resistance of 90 mOhms meets voltage drop requirements in the power path.

Chip Ferrite Bead Part Context

This component belongs to the Murata BLM15 series of chip ferrite beads. The series offers various impedance and current ratings in standard metric sizes. The PD suffix indicates specific material properties optimized for high-current automotive applications.

Chip Ferrite Bead Replacement Considerations

BLM15PX121SN1D: Higher current rating of 2A but different DC resistance. BLM15BD121SZ1D: Lower current rating of 300mA suitable for signal lines.