SMD1812P075TF/24A

Ptc Resettable Fuses Overview

The Littelfuse SMD1812P075TF/24A is a surface-mount polymeric positive temperature coefficient (PPTC) resettable fuse from the miniSMDC series. It features a hold current of 0.75 A and a trip current of 1.5 A, with a maximum voltage rating of 24 V DC. The device has a maximum resistance of 290 mΩ and a minimum resistance of 90 mΩ. It supports a fault current rating of 40 A and operates within a temperature range of -40°C to +85°C. The component measures 4.83 mm in length, 3.41 mm in width, and 1.46 mm in height.

Ptc Resettable Fuses Feature Summary

• Provides reliable overcurrent protection through automatic resistance increase upon heating
• Offers compact surface-mount design suitable for space-constrained PCB layouts
• Ensures circuit safety by resetting automatically after fault conditions clear

Ptc Resettable Fuses Applications

• Portable electronic devices requiring compact circuit protection
• Consumer electronics circuits needing overcurrent safeguarding
• Battery-powered equipment protecting against short circuits

Ptc Resettable Fuses Procurement Notes

Verify that the specific suffix /24A matches the required 24V DC rating and package variant. Confirm RoHS compliance status and agency approvals such as UL or CSA are necessary for the target application. Ensure storage conditions maintain component integrity before soldering.

Ptc Resettable Fuses Selection Notes

Select this component when a 0.75 A hold current and 24 V DC rating are required. Consider the 1812 footprint for board space constraints. Evaluate thermal derating requirements based on ambient operating temperatures up to 85°C. Compare alternative voltages if system requirements differ.

Ptc Resettable Fuses Part Context

This part belongs to the miniSMDC series of PPTC resettable fuses designed for surface-mount applications. It complements other Littelfuse circuit protection solutions by providing resettable functionality in a small form factor. The series targets modern electronics where size and reliability are critical.

Ptc Resettable Fuses Replacement Considerations

The SMD1812P075TFA is a related variant but rated for 13.2 V DC, which differs from the 24 V DC requirement of the /24A model. Verify voltage ratings carefully when substituting. Other 1812 packages may require re-evaluation of thermal and electrical parameters.