BLM21AG151SZ1D

Chip Ferrite Bead Overview

The Murata BLM21AG151SZ1D is a single-line chip ferrite bead in an 0805 (2012 metric) surface-mount package. It provides an impedance of 150 Ohms at 100 MHz with a maximum DC resistance of 90 milliohms and a rated current of 1 Ampere. The component operates within a temperature range of -55°C to +125°C and meets AEC-Q200 automotive qualification standards.

Chip Ferrite Bead Feature Summary

• Provides high noise attenuation at 100 MHz while maintaining low DC resistance for minimal signal loss
• Automotive-grade reliability certified under AEC-Q200 standards for harsh environment durability
• Compact 0805 footprint designed for efficient space utilization on high-density printed circuit boards

Chip Ferrite Bead Applications

• Noise suppression in automotive infotainment system power lines
• Signal line filtering in automotive electronic control units
• High-frequency noise reduction in portable consumer electronics

Chip Ferrite Bead Procurement Notes

Verify the specific suffix against official Murata documentation, as variations exist between SN1D and SZ1D designations regarding tolerance or packaging. Confirm AEC-Q200 compliance requirements match your target application standards before finalizing procurement specifications.

Chip Ferrite Bead Selection Notes

Select this component when a 150 Ohm impedance at 100 MHz is required for a single signal path. Ensure the 1A current rating exceeds the maximum operating current of the protected circuit. The 0805 package size must align with the available board real estate and automated assembly capabilities.

Chip Ferrite Bead Part Context

This part belongs to the Murata EMIFIL BLM series, which utilizes specialized ferrite materials to function as resistors at noise frequencies. This approach minimizes resonance risks compared to traditional inductive filters, offering stable performance across varying load conditions.

Chip Ferrite Bead Replacement Considerations

BLM21AG151SN1D offers identical electrical characteristics but may differ in packaging configuration. Verify that any substitute maintains the same AEC-Q200 certification and physical dimensions to ensure compatibility with existing footprints.

Chip Ferrite Bead FAQ

What is the impedance tolerance for this ferrite bead?

The impedance tolerance is specified as ±25% at the test frequency of 100 MHz.

Is this component suitable for automotive applications?

Yes, the BLM21AG series is qualified according to the AEC-Q200 standard for passive components used in automotive environments.