MH4532-681Y

Overview

The Bourns MH4532-681Y is a high-current ferrite chip bead designed for surface-mount applications. It features an impedance of 680 Ohms at a test frequency of 100 MHz and supports a maximum DC current of 4 A. The component has a maximum DC resistance of 60 mOhms and operates within a temperature range of -55°C to +125°C. Housed in an 1812 (4532 metric) package with dimensions of 4.5 mm x 3.2 mm x 1.5 mm, it provides effective power filtering for electronic circuits.

Feature Summary

• High current handling capability suitable for power line filtering
• Low DC resistance minimizes voltage drop in series configurations
• Robust thermal stability across extended industrial temperature ranges

Applications

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

Procurement Notes

Verify the specific suffix 'Y' corresponds to the required packaging format, such as tape and reel or cut tape, as this affects handling procedures. Confirm RoHS compliance status through the manufacturer's latest documentation before integration into environmentally regulated assemblies. Ensure the selected variant matches the exact impedance tolerance requirements of the design.

Selection Notes

Select this component when circuit designs require significant current carrying capacity alongside moderate impedance values for EMI suppression. The 1812 footprint offers a balance between current handling and board space efficiency compared to smaller packages. Evaluate the DC resistance impact on overall system efficiency and ensure the operating temperature range aligns with the environmental conditions of the final application.

Part Context

This part belongs to the Bourns MH series of high-current chip ferrite beads. The series is engineered to provide reliable noise attenuation in power-sensitive applications while maintaining structural integrity under high current loads. The MH designation specifically indicates high-current performance characteristics distinct from standard impedance beads.

Replacement Considerations

Direct substitutes must match the 680 Ohm impedance at 100 MHz, 4 A current rating, and 1812 package dimensions. Verify that alternative components offer comparable DC resistance and thermal performance to ensure circuit compatibility without redesign.