RXEF375K

Ptc Resettable Fuses Overview

The Littelfuse RXEF375K is a radial leaded PolySwitch resettable fuse from the RXEF series, designed for overcurrent protection in electronic circuits. It features a 0.375 A hold current and a maximum voltage rating of 72 V DC. The device has a trip current of 0.75 A and can withstand a maximum fault current (Imax) of 40 A. Its typical resistance is 1.6 ohms, and it operates within a temperature range of -40°C to +85°C.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit restoration after fault clearance without manual replacement
• Offers high-volume assembly compatibility with standard PCB mounting methods
• Complies with RoHS standards and is free of lead and halogens

Ptc Resettable Fuses Applications

• Computer motherboards
• Industrial controls
• USB hubs, ports and peripherals
• Battery packs

Ptc Resettable Fuses Procurement Notes

Verify the specific part number suffix against official Littelfuse documentation to confirm exact electrical ratings and package dimensions. Ensure the selected component meets the required agency approvals for your target market. Cross-reference datasheet parameters with system design constraints before finalizing procurement orders.

Ptc Resettable Fuses Selection Notes

Select this component based on the required hold current and maximum operating voltage of the protected circuit. Consider the physical size constraints for PCB layout and the thermal environment where the device will operate. Verify that the trip current characteristics align with the surge tolerance of the downstream components.

Ptc Resettable Fuses Part Context

This device belongs to the RXEF series of radial leaded PPTC products. The series provides a comprehensive range of resettable fuses with low hold currents and high voltage ratings. These devices are UL recognized and CSA approved for use in various electronic applications requiring reliable overcurrent protection.

Ptc Resettable Fuses Replacement Considerations

Consult official Littelfuse substitution guides for verified alternatives. Generic replacements may not match the specific tripping characteristics or agency certifications required for the original application.