BLM15AG121SZ1D

Chip Ferrite Bead Overview

The Murata BLM15AG121SZ1D is a single-line chip ferrite bead in the EMIFIL BLM15 series, housed in a 0402 (1005 metric) surface-mount package. 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 550 mA and exhibits a maximum DC resistance of 190 mOhms. It operates within a temperature range of -55°C to +125°C and holds AEC-Q200 qualification for automotive reliability.

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 under the AEC-Q200 standard

Chip Ferrite Bead Applications

• Automotive electronic systems requiring EMI noise filtering
• High-frequency signal line protection in consumer electronics
• Power supply input/output stages for noise attenuation

Chip Ferrite Bead Procurement Notes

Verify the suffix Z1D against SN1D or SH1D variants to ensure correct current rating and impedance profile. Confirm RoHS3 compliance status and AEC-Q200 certification requirements for your specific application environment before finalizing procurement orders.

Chip Ferrite Bead Selection Notes

Select this component when a 0402 footprint is required with 120 Ohm impedance at 100 MHz. Ensure the 550 mA current limit meets the circuit's operational demands. Consider higher current variants like BLM15PD if load currents exceed rated limits while maintaining similar impedance characteristics.

Chip Ferrite Bead Part Context

This part belongs to the Murata BLM15 series of unshielded ferrite beads. It shares the standard 0402 dimensions with other series members but differs in material composition and electrical ratings. The AG suffix denotes specific magnetic properties optimized for general-purpose noise suppression in digital and analog circuits.

Chip Ferrite Bead Replacement Considerations

BLM15AG121SN1D offers identical impedance but different current handling. BLM15PD121SZ1D provides higher current capacity with lower DC resistance. Verify pin compatibility and thermal performance when substituting.