MF-USMD005-2

Overview

The Bourns MF-USMD005-2 is a surface-mount PTC resettable fuse in the Multifuse series, designed for circuit protection. It features a 1210 (3225 metric) package with dimensions of 3.43 mm length, 2.8 mm width, and 1.1 mm height. Key electrical parameters include a hold current of 50 mA, trip current of 150 mA, maximum voltage of 30 VDC, and maximum rated current of 10 A. The device exhibits an initial resistance minimum of 2.8 Ohms and a post-trip resistance maximum of 50 Ohms, with a power dissipation rating of 600 mW.

Feature Summary

• Provides fast tripping resettable circuit protection within a compact 1210 footprint.
• Offers significant design size reduction compared to previous series iterations.

Applications

• Portable electronic devices
• Laptop computers
• Peripheral equipment

Procurement Notes

Verify component status as this specific part number may be obsolete or discontinued by the manufacturer. Confirm availability of valid substitutes if production continuity is required. Ensure that any replacement components match the original electrical specifications and physical footprint requirements for the target application.

Selection Notes

Select this component for applications requiring overcurrent protection in space-constrained environments. The 1210 package allows for efficient board layout while maintaining necessary protection thresholds. Consider the thermal environment and mounting orientation when integrating into the final assembly to ensure reliable operation.

Part Context

This component belongs to the Bourns Multifuse family of PTC resettable fuses. These devices utilize polymer technology to provide automatic reset functionality after fault conditions clear. The series is engineered for high-reliability applications where manual fuse replacement is impractical or undesirable.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with alternative components from the same manufacturer series if this specific model is unavailable.