MF-USMF175-2

Overview

The Bourns MF-USMF175-2 is a Multifuse PPTC resettable fuse designed for surface mount applications. It features a hold current of 175 mA and a trip current of 525 mA, with a maximum voltage rating of 30 VDC. The device has a maximum resistance of 4 Ohms and a high fault current rating of 10 A. Packaged in a compact 1210 (3225 metric) SMD form factor, it operates within a temperature range of -40°C to +85°C. This component provides overcurrent protection while maintaining low profile dimensions suitable for space-constrained circuit designs.

Feature Summary

• Provides automatic resettable overcurrent protection using polymer positive temperature coefficient technology
• Eliminates the need for manual replacement after fault events, enhancing system reliability
• Offers robust performance in harsh environments with high voltage and temperature tolerance
• Enables flexible layout design through compact surface mount packaging

Applications

• Automotive circuit protection systems
• High-reliability electronic equipment safeguarding
• Industrial transportation power circuits
• Communication infrastructure components
• Consumer electronics overcurrent defense

Procurement Notes

Verify that the specific part number matches the required electrical parameters, particularly the 175 mA hold current and 30 VDC rating. Confirm compliance with AEC-Q200 standards if automotive qualification is necessary. Ensure the package type aligns with the PCB footprint requirements. Check RoHS directive adherence for environmental compliance. Validate supplier documentation against official manufacturer specifications to avoid counterfeit components.

Selection Notes

Select this component when designing circuits requiring resettable protection with a 175 mA holding threshold. Consider the 1210 package size for available board space constraints. Evaluate the 30 VDC maximum voltage limit against the operating circuit conditions. Assess the thermal environment to ensure operation remains within the specified -40°C to +85°C range. Compare the 10 A fault current capability against potential surge scenarios in the application.

Part Context

This device belongs to the Bourns Multifuse MF-USMF series, which specializes in high-performance polymer PTC resettable fuses. The series is engineered for demanding applications requiring reliable overcurrent protection in compact formats. These components are widely utilized in industries such as automotive, industrial, and consumer electronics where space efficiency and circuit resilience are critical priorities.

Replacement Considerations

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