RXEF025-1

Ptc Resettable Fuses Overview

The Littelfuse RXEF025-1 is a radial leaded PolySwitch resettable fuse from the RXEF series, designed for overcurrent protection in electronic circuits. It features a hold current of 250 mA and a trip current of 0.5 A, with a maximum voltage rating of 72 VDC. The device has a maximum interrupting current (Imax) of 40 A and a typical resistance of 1.3 Ohms. It operates within a temperature range of -40°C to +85°C and utilizes a bulk packaging format.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit recovery after fault clearance without manual replacement
• Offers low-profile radial leaded form factor suitable for high-volume PCB assembly
• Complies with RoHS standards and is free from lead and halogens

Ptc Resettable Fuses Applications

• Computer motherboards and peripheral interfaces
• USB hubs, ports, and connected peripherals
• Industrial control systems and transformers
• Satellite video receivers and modems

Ptc Resettable Fuses Procurement Notes

Verify that the specific part number RXEF025-1 matches the required 250 mA hold current and 72 VDC rating for your design. Confirm the radial lead configuration and bulk packaging preference aligns with your assembly process. Ensure compliance with UL 1434 and CSA requirements if applicable to your target market regulations.

Ptc Resettable Fuses Selection Notes

Select this component when a resettable protection solution is preferred over single-use fuses for circuits requiring maintenance-free operation. The 250 mA rating suits low-current signal lines or power rails where occasional transient overloads may occur. Consider the 1.3 Ohm resistance impact on voltage drop and power dissipation in sensitive applications.

Ptc Resettable Fuses Part Context

This device belongs to the Littelfuse RXEF series of PolySwitch resettable fuses, which are polymer positive temperature coefficient (PPTC) devices. The series provides comprehensive protection options with various hold currents and termination methods, widely recognized for reliability in consumer electronics and industrial equipment overcurrent protection schemes.

Ptc Resettable Fuses Replacement Considerations

Direct substitutes include other Littelfuse RXEF series parts with identical electrical ratings, such as RXEF025 or equivalent variants from the same family ensuring matching voltage and current specifications.