RXEF030S-2

Ptc Resettable Fuses Overview

The Littelfuse RXEF030S-2 is a PolySwitch resettable PTC device designed for overcurrent protection in electronic circuits. It features a radial lead installation style with a hold current of 300 mA and a trip current of 600 mA. The component supports a maximum voltage of 72 VDC and offers a high maximum fault current rating of 40 A. With an initial resistance of 1.5 Ohms, it operates within a temperature range of -40°C to +85°C. The device measures 7.6 mm in diameter and 3 mm in length, dissipating up to 560 mW of power.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit recovery after fault conditions clear without manual replacement
• Offers high fault current capability to handle significant surge events safely
• Features compact radial leaded form factor suitable for space-constrained PCB layouts

Ptc Resettable Fuses Applications

• Portable electronics battery pack protection
• Computer peripheral interface circuits
• Telecommunications equipment input protection

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix designation during procurement to ensure compliance with project requirements. Confirm that the selected variant matches the required hold current and voltage ratings for the target application environment. Cross-reference manufacturer documentation to validate RoHS compliance status and package specifications before finalizing supply chain agreements.

Ptc Resettable Fuses Selection Notes

Select this component based on the specific 300 mA hold current requirement and 72 VDC system voltage constraints. Ensure the operating temperature range aligns with the environmental conditions of the end product. Evaluate the physical dimensions against available PCB real estate and verify compatibility with standard through-hole assembly processes.

Ptc Resettable Fuses Part Context

This part belongs to the RXEF series of PolySwitch resettable fuses from Littelfuse. The series provides a range of radial leaded devices optimized for protecting low-voltage circuits. These components are engineered for high-volume electronics manufacturing and offer reliable overcurrent protection across various consumer and industrial applications.

Ptc Resettable Fuses Replacement Considerations

Direct substitutes include RXEF030S and RXEF030-2. Verify electrical parameters such as hold current and voltage ratings match exactly when considering alternative variants within the same product family.