SMD1812P150TSA

Ptc Resettable Fuses Overview

The SMD1812P150TSA is a surface-mount PolySwitch resettable fuse manufactured by Littelfuse Inc. It belongs to the PPTC (Polymer Positive Temperature Coefficient) category, designed for overcurrent protection in electronic circuits. The device features an 1812 package size with a hold current of 1.5 A and a trip current of 3 A. It supports a maximum voltage of 6 V and can handle a maximum current rating of 40 A. The component exhibits a resistance of 0.11 Ohms and operates within a temperature range of -40°C to +85°C.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit recovery after fault clearance without manual replacement
• Utilizes polymer positive temperature coefficient technology for rapid response to overcurrent events
• Designed for surface mount integration on printed circuit boards

Ptc Resettable Fuses Applications

• Protection for integrated circuits against shorts and overcurrent
• Battery-powered handheld electronics safeguarding
• LED lighting circuit protection
• Networking equipment interface protection

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix TSA against official Littelfuse documentation to confirm plating composition and packaging configuration. Ensure the selected variant matches the required lead-free or tin-lead specifications for your assembly process. Cross-reference the datasheet revision date to confirm current manufacturing status and parameter validity before finalizing procurement orders.

Ptc Resettable Fuses Selection Notes

Select this component when designing low-voltage circuits requiring resettable overcurrent protection. The 1.5 A hold current suits moderate load applications, while the 6 V maximum voltage limits usage to low-voltage digital logic or communication interfaces. Consider the 0.11 Ohm resistance impact on power loss during normal operation. Verify thermal dissipation requirements given the 1812 form factor constraints.

Ptc Resettable Fuses Part Context

This part is classified under Resettable Fuses - PPTC within Littelfuse's circuit protection portfolio. It serves as a reusable alternative to traditional one-time fuses, offering design flexibility for systems where downtime must be minimized. The 1812 package allows for compact PCB layouts in space-constrained consumer and industrial devices.

Ptc Resettable Fuses Replacement Considerations

Public confirmed substitute part numbers include SMD1812P150TF and SMD1812P150TS. Verify pin compatibility and electrical parameters before substitution.