MFBA3V1005M-121-R

Chip Ferrite Bead Overview

The Eaton MFBA3V1005M-121-R is an automotive-grade multilayer chip ferrite bead designed for surface-mount technology. It operates within a 0402 (1005 metric) package, measuring 1.0 mm in length, 0.5 mm in width, and 0.5 mm in height. The component provides an impedance of 120 Ohms at a test frequency of 100 MHz with a tolerance of ±25%. It supports a maximum DC current of 300 mA and exhibits a maximum DC resistance of 200 mOhms. The device functions reliably across a temperature range from -55°C to +150°C.

Chip Ferrite Bead Feature Summary

• Automotive qualification compliant with AEC-Q200 standards
• Multilayer chip construction for high-frequency noise suppression
• Compact 0402 footprint suitable for dense PCB layouts

Chip Ferrite Bead Applications

• Automotive electronic circuit protection
• High-frequency signal line filtering
• Power supply noise attenuation in vehicle systems

Chip Ferrite Bead Procurement Notes

Verify the specific suffix 'M' against official Eaton documentation to confirm it denotes the correct impedance variant and packaging configuration. Ensure the selected part matches the required automotive grade specifications and thermal ratings for the intended application environment before finalizing procurement orders.

Chip Ferrite Bead Selection Notes

Select this component when designing circuits requiring robust noise suppression in space-constrained automotive applications. The 0402 size offers a balance between performance and board real estate. Consider the 300 mA current rating and 120 Ohm impedance profile to ensure compatibility with the target signal frequencies and power requirements.

Chip Ferrite Bead Part Context

This ferrite bead belongs to the MFBA3 series, which is specifically engineered for automotive electronics. The MFBM1V series represents a related product line from Eaton Electronics, offering similar form factors but potentially differing electrical characteristics or qualification levels. Both series utilize multilayer ceramic technology for EMI suppression.

Chip Ferrite Bead Replacement Considerations

Cross-reference with Eaton part number MFBA3V1005K-121-R for potential substitution options within the same automotive ferrite bead family.