MFBA3V2012K-121-R

Overview

The Eaton MFBA3V2012K-121-R is a single-line surface-mount ferrite bead designed for high-frequency noise suppression. It features an impedance of 120 Ohms at 100 MHz and supports a maximum current rating of 800 mA. The component exhibits a maximum DC resistance of 200 mOhm. Packaged in an 0805 (2012 metric) footprint, it is rated under AEC-Q200 standards for automotive reliability.

Feature Summary

• Provides effective attenuation of high-frequency electromagnetic interference signals
• Automotive-grade construction ensures reliability in demanding environments
• Compact surface-mount design facilitates integration into space-constrained circuit boards

Applications

• Automotive electronics signal line filtering
• High-speed data interface noise suppression
• Power supply output filtering for sensitive loads

Procurement Notes

Verify the specific suffix K-121-R to confirm the 120 Ohm impedance value and 800 mA current rating. Ensure the procurement documentation explicitly states AEC-Q200 compliance if automotive qualification is required. Confirm the package type matches the 0805 footprint requirements of the target PCB layout.

Selection Notes

Select this component when a low-profile solution is needed for EMI reduction on lines carrying up to 800 mA. The 120 Ohm impedance at 100 MHz targets common switching noise frequencies. Consider the 200 mOhm DCR limit to ensure minimal voltage drop and power loss in the application circuit.

Part Context

This part belongs to the MFBA3V2012 series of automotive chip beads from Eaton Electronics. The series utilizes proprietary materials to achieve high impedance in a small form factor. It is distinct from other Eaton ferrite products by its specific AEC-Q200 certification and radial or surface-mount availability within the broader portfolio.

Replacement Considerations

Consult Eaton official substitution guides for equivalent parts with matching impedance curves and current ratings. Verify that any alternative component meets the same AEC-Q200 automotive qualification standards and physical footprint dimensions.