RHEF1500

Ptc Resettable Fuses Overview

The Littelfuse RHEF1500 is a radial leaded PolySwitch resettable PPTC device designed for overcurrent protection. It features a holding current of 15 A and a trip current of 28 A, with a maximum voltage rating of 16 VDC. The component has a low resistance of 9.2 mΩ and a rated maximum current of 100 A. It operates within a temperature range of -40°C to +125°C and utilizes a 10.9 mm lead spacing in a bulk package.

Ptc Resettable Fuses Feature Summary

• Provides reliable overcurrent protection by raising internal resistance as it heats to limit current flow during fault conditions.
• Offers automatic circuit restoration after cooling, eliminating the need for manual replacement compared to traditional fuses.

Ptc Resettable Fuses Applications

• Protection for automotive actuators, screens, and small motors
• Overcurrent safeguarding for telephony and networking equipment
• Circuit and wiring harness protection in power supply applications

Ptc Resettable Fuses Procurement Notes

Verify the specific Littelfuse datasheet for the RHEF1500 to confirm all electrical parameters and mechanical dimensions prior to integration. Ensure that the selected component meets the required thermal and current ratings for the target application environment. Cross-reference official manufacturer documentation to validate compliance with relevant safety standards and RoHS directives.

Ptc Resettable Fuses Selection Notes

Select this component when high holding current capacity is required for robust circuit protection. Consider the low resistance value for minimizing power loss in normal operation. Evaluate the maximum voltage rating to ensure compatibility with the system's operating voltage. Assess the thermal characteristics to guarantee performance across the intended operating temperature range.

Ptc Resettable Fuses Part Context

The RHEF1500 belongs to the PolySwitch family of resettable fuses from Littelfuse. This series provides solid-state protection solutions for various electronic applications. The device serves as an alternative to traditional fusible links, offering reusable overcurrent protection capabilities for sensitive components and wiring harnesses.

Ptc Resettable Fuses Replacement Considerations

Consult official Littelfuse substitution guides for verified equivalent part numbers. Do not assume interchangeability based on generic specifications alone. Verify that any substitute matches the critical electrical and mechanical requirements of the original design.

Ptc Resettable Fuses FAQ

What is the function of the RHEF1500?

It acts as a resettable fuse that limits current by increasing resistance when heated during an overcurrent event.

How does the RHEF1500 restore circuit continuity?

The device automatically resets once it cools down after the fault condition is removed, restoring low resistance.