MF-USML380/12-2

Overview

The Bourns MF-USML380/12-2 is a surface-mount polymeric positive temperature coefficient (PPTC) resettable fuse from the MF-USML series. Designed for high-temperature environments, this component provides overcurrent protection in compact electronic circuits. It features a hold current of 380 mA and a maximum voltage rating of 12 V. The device utilizes a polymer composite that increases resistance significantly upon overheating due to excessive current, effectively limiting the flow until the fault condition is removed and the unit cools down.

Feature Summary

• Provides automatic circuit protection against overcurrent conditions through self-resetting functionality
• Engineered with high-temperature resistant materials suitable for demanding thermal environments
• Utilizes a compact surface-mount package design to minimize PCB footprint requirements

Applications

• Consumer electronics port protection
• Industrial control circuit safeguarding
• Telecommunications equipment line protection

Procurement Notes

Verify the specific suffix codes on the datasheet to ensure the exact electrical ratings match your design requirements. Confirm RoHS compliance status and packaging specifications directly with the manufacturer or authorized distributors before placing orders to avoid discrepancies in lead times or material certifications.

Selection Notes

Select this component based on the required hold current and trip current thresholds relative to the operating load. Ensure the maximum voltage rating exceeds the circuit's peak voltage. Consider the physical size constraints and the thermal environment where the fuse will operate to guarantee reliable performance without nuisance tripping during normal operation.

Part Context

This part belongs to the MF-USML series of high-temperature PPTC resettable fuses manufactured by Bourns Inc. The series is characterized by its ability to withstand elevated temperatures while maintaining protective functions. It serves as a reusable alternative to traditional one-time fuses in modern electronic assemblies requiring robust overcurrent management.

Replacement Considerations

Consult official Bourns substitution guides for direct equivalents. Verify that any substitute maintains identical hold current, trip current, and voltage ratings. Ensure the replacement package matches the original footprint and soldering profile requirements to prevent assembly issues.