1812L075/24DR

Ptc Resettable Fuses Overview

The Littelfuse 1812L075/24DR is a surface-mount PTC resettable fuse from the POLY-FUSE 1812L series. It features a maximum voltage rating of 24V DC and a hold current (Ih) of 750 mA. The trip current (It) is specified at 1.5 A, with a maximum trip time of 200 ms. Initial resistance ranges from 110 mΩ to 290 mΩ. It operates within a temperature range of -40°C to +85°C and carries AEC-Q200 automotive qualification.

Ptc Resettable Fuses Feature Summary

• Polymer PTC technology provides automatic circuit protection against overcurrent conditions
• AEC-Q200 qualified for reliable performance in automotive electronic applications
• Surface mount design facilitates automated PCB assembly processes

Ptc Resettable Fuses Applications

• Automotive electronics circuit protection
• Portable device power line safeguarding
• Industrial control board overcurrent defense

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix DR indicates reel packaging configuration. Confirm RoHS3 compliance status matches project requirements. Ensure the 24V DC rating aligns with the target circuit's maximum operating voltage. Check for any recent PCN updates regarding material or dimensional changes.

Ptc Resettable Fuses Selection Notes

Select this component when a compact 1812 footprint is required for low-voltage DC circuits. The 750 mA hold current suits moderate load protection needs. Verify that the 290 mΩ maximum resistance does not cause excessive voltage drop in the application. Consider thermal derating factors if ambient temperatures approach the upper limit.

Ptc Resettable Fuses Part Context

This part belongs to the 1812L series of polymer resettable fuses by Littelfuse. These devices offer higher current capacity compared to smaller packages while maintaining a small profile. The series is widely used in consumer electronics and automotive sectors for reusable overcurrent protection.

Ptc Resettable Fuses Replacement Considerations

Direct substitutes include other 1812L series parts with matching electrical ratings, such as the 1812L075/24MR. Cross-reference dimensions and resistance values to ensure compatibility with existing PCB layouts and thermal management strategies.