SMD030F-2018-2

Ptc Resettable Fuses Overview

The Littelfuse SMD030F-2018-2 is a PolySwitch resettable PTC fuse designed for surface mount applications. It features a hold current of 300 mA and a trip current of 800 mA, with a maximum voltage rating of 60 VDC. The device offers a maximum fault current capacity of 20 A and maintains a typical resistance of 0.5 Ohms. Housed in a compact 2018 (5443 metric) package measuring 5.44 x 4.93 x 1.78 mm, it operates within a temperature range of -40°C to +85°C. This component provides reliable overcurrent protection where space constraints are critical.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit recovery after fault conditions without manual replacement
• Designed for surface mount integration to minimize board space usage
• Offers high fault current interruption capability up to 20 A

Ptc Resettable Fuses Applications

• Portable electronic devices requiring compact overcurrent protection
• Automotive electronics systems
• Consumer hardware circuits
• Industrial control modules

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix designation to ensure correct voltage and package compatibility. Confirm that the selected variant matches the required hold and trip currents for the target circuit design. Check datasheet specifications for moisture sensitivity levels and reflow soldering profiles to guarantee assembly integrity. Ensure the supplier provides valid RoHS compliance documentation.

Ptc Resettable Fuses Selection Notes

Select this component when space efficiency is prioritized alongside resettable protection capabilities. Evaluate the 60 VDC rating against the system's maximum operating voltage. Consider the 0.5 Ohm resistance impact on low-voltage signal lines. Assess the thermal environment to ensure operation remains within the specified -40°C to +85°C range during normal and fault conditions.

Ptc Resettable Fuses Part Context

This part belongs to the Littelfuse SMD series of PolySwitch resettable fuses. The series targets applications demanding robust overcurrent protection in limited footprint scenarios. These devices utilize polymer technology to provide durable, multi-use protection solutions suitable for modern electronic assemblies requiring high reliability and compact form factors.

Ptc Resettable Fuses Replacement Considerations

Direct substitutes include other Littelfuse SMD series variants with matching electrical ratings. Verify equivalent hold current, trip current, and voltage ratings before substitution. Cross-reference package dimensions to ensure mechanical fit. Consult official Littelfuse documentation for approved alternative part numbers.