MF-USMF010-2

Overview

The Bourns MF-USMF010-2 is a surface-mount polymeric positive temperature coefficient (PPTC) resettable fuse from the MF-USMF series. It features a 100 mA hold current and a 300 mA trip current, designed for circuits operating at a maximum voltage of 30 VDC. The component provides a maximum fault current rating of 10 A and exhibits a typical resistance of 15 ohms. Packaged in a compact 1210 (3225 metric) footprint, it operates within a temperature range of -40°C to +85°C. This device is AEC-Q100 qualified, ensuring reliability for automotive applications requiring robust overcurrent protection.

Feature Summary

• Self-resetting overcurrent protection mechanism utilizing polymeric PPTC technology
• Automotive-grade qualification compliant with AEC-Q100 standards
• Surface-mount design optimized for automated SMD/SMT assembly processes

Applications

• Automotive electronic circuit protection
• Portable consumer electronics power lines
• Industrial control system overcurrent safeguarding

Procurement Notes

Verify the specific ordering suffix matches the required package configuration and tape-and-reel specifications. Confirm that the 1210 footprint aligns with the target PCB land pattern dimensions. Ensure the 30 VDC maximum voltage rating satisfies the circuit's operational requirements. Check for AEC-Q100 certification documentation if automotive compliance is mandatory. Validate thermal management capabilities against the specified operating temperature range.

Selection Notes

Select this component when a low-profile surface-mount solution is required for 30 VDC circuits. The 100 mA hold current suits sensitive signal or low-power data lines. Consider the 15 ohm resistance impact on signal integrity or voltage drop. The AEC-Q100 qualification makes it suitable for automotive environments. Evaluate the 10 A max fault current capability against potential short-circuit scenarios.

Part Context

This part belongs to the Bourns MF-USMF series of high-density resettable fuses. The series offers various hold currents and voltage ratings in standard surface-mount packages. The MF-USMF010-2 specifically targets applications needing compact protection with automotive reliability standards. It complements other Bourns protection devices like the MF-MSMF series for higher voltage requirements.

Replacement Considerations

Direct substitutes must match the 100 mA hold current, 30 VDC rating, and 1210 package size. Verify equivalent AEC-Q100 qualification for automotive replacements. Compare trip current characteristics and resistance values to ensure circuit compatibility. Consult official cross-reference lists for confirmed alternative part numbers.