ASMDC030F-2

Ptc Resettable Fuses Overview

The ASMDC030F-2 is a PolySwitch resettable polymer PTC fuse from Littelfuse, designed for surface mount applications. It features a maximum voltage rating of 60V and a hold current (Ih) of 300 mA. The trip current (It) is specified at 600 mA, with a maximum fault current rating of 10 A. Initial resistance (Ri) is typically 300 mOhms, while post-trip resistance (R1) reaches up to 3.4 Ohms. The device measures 7.50mm x 5.10mm x 0.90mm in a 2-SMD package. It holds AEC-Q200 automotive qualification and operates within a standard moisture sensitivity level.

Ptc Resettable Fuses Feature Summary

• Provides reliable overcurrent protection through automatic resistance increase upon heating during fault conditions
• Automotive-grade construction ensures durability under harsh environmental conditions and vibration
• Surface mount design facilitates direct soldering onto printed circuit boards for compact integration

Ptc Resettable Fuses Applications

• Protection of actuators and small motors in commercial and passenger vehicles
• Overcurrent safeguarding for display screens and infotainment systems
• Circuit protection for battery management modules in electric vehicles
• Defense against short circuits in automotive sensor interfaces

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix 'F-2' matches the required tape and reel configuration for automated assembly processes. Confirm that the 60V rating aligns with the system's maximum operating voltage to prevent premature tripping or failure. Ensure the PCB footprint corresponds to the 2-SMD package dimensions of 7.50mm by 5.10mm. Cross-reference the AEC-Q200 certification requirements if the application mandates strict automotive reliability standards.

Ptc Resettable Fuses Selection Notes

Select this component when a resettable solution is preferred over one-time fuses for automotive circuits requiring serviceability. The 300 mA hold current suits low-power signal lines and peripheral devices rather than high-current power rails. Consider the thermal environment, as ambient temperature affects the trip threshold. The 60V rating limits suitability to low-voltage automotive networks. Evaluate space constraints given the compact SMD form factor compared to radial leaded alternatives.

Ptc Resettable Fuses Part Context

This part belongs to the ASMD series of automotive-grade resettable fuses. It complements other PolySwitch devices offering varying current ratings and voltage profiles. The series addresses the industry demand for robust, space-saving protection in modern vehicle electronics. It sits alongside other Littelfuse circuit protection solutions like traditional fuses and TVS diodes, providing a reusable alternative for non-critical overcurrent events.

Ptc Resettable Fuses Replacement Considerations

Direct substitutes include other ASMDC series variants with matching electrical parameters. Verify equivalent AEC-Q200 qualification for automotive compliance. Check for identical package dimensions to ensure mechanical compatibility on existing PCB layouts. Confirm that the replacement maintains the same voltage and current ratings to preserve circuit protection integrity.