MI0603M121R-10

Overview

The MI0603M121R-10 is a monolithic ferrite chip bead from the Laird MI series, designed for surface-mount applications in the 0603 (1608 metric) package. It provides an impedance of 120 Ohms at a test frequency of 100 MHz. The component supports a maximum DC current of 2.5 A with a maximum DC resistance of 50 mOhms. It operates within a temperature range of -40°C to +125°C and measures 1.6 mm in length, 0.5 mm in width, and 0.5 mm in height.

Feature Summary

• Monolithic construction for reliable EMI suppression in compact designs
• High current handling capability suitable for power line filtering
• Low DC resistance minimizes voltage drop and power loss
• RoHS compliant manufacturing

Applications

• Power supply output filtering
• DC power line noise suppression
• Signal line EMI protection

Procurement Notes

Verify RoHS compliance status directly with the manufacturer or authorized distributor, as legacy data may indicate non-compliance while current production versions are compliant. Confirm the specific suffix indicates active status versus obsolete variants. Ensure the ordering code matches the required packaging format such as cut tape or reel. Cross-reference the datasheet revision date to ensure technical specifications remain current.

Selection Notes

Select this component when a 0603 footprint is required for high-current applications needing 120 Ohms attenuation at 100 MHz. The low DCR makes it suitable for sensitive power rails where voltage integrity is critical. Compare against similar Laird models like the MI0603K300R-10 if lower current or different impedance characteristics are needed. Ensure the operating temperature range meets the environmental requirements of the target application.

Part Context

This part belongs to the Laird MI series of EMI filtering components. The series offers various impedance values and current ratings across multiple standard footprints including 0402, 0603, and 1210. The MI series is widely used in consumer electronics and industrial equipment for suppressing electromagnetic interference on both power and signal lines.

Replacement Considerations

The obsolete variant MI0603M121R-00 can be replaced by MI0603M121R-10. Alternative suppliers include Murata BLM18EG121SN1D.