MFBW1V3216-121-R

Overview

The MFBW1V3216-121-R is a multilayer chip ferrite bead from Eaton Electronics, designed for EMI suppression in surface-mount applications. It features a 1206 (3216 metric) package with dimensions of 3.20mm length and 1.60mm width. The component provides an impedance of 120 Ohms at a test frequency of 100 MHz. It supports a maximum rated current of 3A and has a maximum DC resistance of 70 mOhms. The device operates within a temperature range of -40°C to +85°C and is available in reel packaging.

Feature Summary

• Multilayer construction for effective electromagnetic interference suppression
• Surface mount design compatible with standard SMD assembly processes
• Shielded configuration to contain magnetic fields

Applications

• Power supply filtering
• Battery charger circuits
• Portable electronic devices
• Energy-efficient system power lines

Procurement Notes

Verify the specific suffix 'W' against project requirements, as it denotes distinct electrical characteristics compared to other series variants like 'M'. Confirm that the 3A current rating and 70 mOhm DCR align with the target circuit's load profile. Ensure the 1206 footprint matches the PCB layout constraints. Cross-reference the datasheet for moisture sensitivity level and RoHS compliance status prior to ordering.

Selection Notes

Select this component when a 120 Ohm impedance at 100 MHz is required for high-current applications up to 3A. The 1206 package offers a balance between size and current handling capability. Consider the 70 mOhm DC resistance impact on power loss in low-voltage rails. Compare against the MFBM1V3216-121-R if lower resistance or higher current tolerance is needed, noting the differences in series specifications.

Part Context

This part belongs to the MFBW1V3216 series of multilayer ferrite beads from Eaton Electronics. The series is engineered for general-purpose EMI suppression in compact electronic designs. The 1206 form factor is widely used in consumer electronics and industrial equipment where space efficiency is critical while maintaining robust noise filtering performance.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source documentation.