MFBW1V2012-121-R

Overview

The MFBW1V2012-121-R is a multilayer chip ferrite bead manufactured by Eaton Electronics. It features an impedance of 120 Ohms at a test frequency of 100 MHz and supports a maximum DC current of 2 Amperes. The component has a maximum DC resistance of 100 mOhms and operates within a temperature range of -40°C to +85°C. It utilizes a shielded design in a 0805 (2012 Metric) surface-mount package.

Feature Summary

• Shielded multilayer construction for effective noise suppression
• High current handling capability suitable for power line filtering
• Low DC resistance minimizes signal loss in high-current applications

Applications

• Power supply output filtering
• DC-DC converter noise suppression
• High-speed digital signal line protection

Procurement Notes

Verify the specific suffix 'R' indicates reel packaging when ordering. Confirm the 0805 footprint matches the target PCB layout. Ensure the 2A current rating meets the circuit requirements. Check RoHS compliance status if required by project specifications. Validate the 120 Ohm impedance at 100 MHz against EMI targets.

Selection Notes

Select this component for applications requiring significant current handling alongside moderate impedance. The shielded design reduces magnetic interference with nearby components. Compare the 100 mOhm DCR against voltage drop constraints. Consider the 0805 size for space-constrained boards where higher current than smaller packages allows.

Part Context

This part belongs to the MFBW1V series of multilayer ferrite beads from Eaton Electronics. The series offers various impedance and current ratings across different package sizes. The 2012 metric case provides a balance between current capacity and board space efficiency compared to smaller footprints.

Replacement Considerations

Direct substitutes include other 120 Ohm, 2A, 0805 ferrite beads from manufacturers like Murata or TDK. Verify pin compatibility and impedance curves match the original design requirements before substitution.