SMD1812P110TSA/16

Ptc Resettable Fuses Overview

The Littelfuse SMD1812P110TSA/16 is a surface-mount PolySwitch resettable PTC fuse from the 1812P series. It features a maximum voltage rating of 16 VDC and a hold current of 1.1 A. The device trips at 2.2 A with a maximum trip time of 0.5 seconds. Initial resistance is 60 mΩ, rising to 180 mΩ after tripping. It operates between -40°C and +85°C, dissipates 800 mW, and supports a fault current of 100 A.

Ptc Resettable Fuses Feature Summary

• Provides reliable overcurrent protection for sensitive electronic circuits by increasing resistance during thermal events.
• Offers automatic circuit recovery without manual replacement after fault conditions clear.
• Designed for direct surface mounting on printed circuit boards using standard reflow soldering processes.

Ptc Resettable Fuses Applications

• Protection of portable consumer electronics and battery-powered devices
• Overcurrent safeguarding in telecommunications equipment and data lines
• Circuit protection for automotive infotainment and body control modules

Ptc Resettable Fuses Procurement Notes

Verify that the specific suffix matches the required voltage rating and packaging configuration. Confirm RoHS compliance status and agency approvals such as UL or TUV are present on the datasheet. Ensure the component meets the thermal and electrical requirements of the target application before finalizing procurement orders.

Ptc Resettable Fuses Selection Notes

Select this component when a low-profile surface-mount solution is required for 16 VDC systems. The 1.1 A hold current suits moderate load applications. Consider the 180 mΩ max resistance impact on power loss. Verify ambient temperature derating curves to ensure reliable operation within the specified -40°C to +85°C range for the intended environment.

Ptc Resettable Fuses Part Context

This part belongs to the 1812P series of PolySwitch resettable fuses. It serves as a solid-state alternative to traditional one-time fuses. The series provides cost-effective overcurrent protection for various industrial and commercial applications requiring compact form factors and automatic reset capabilities.

Ptc Resettable Fuses Replacement Considerations

Compatible substitutes include the 1812L110/16DR and 1812L110PR variants. These alternatives share similar electrical characteristics but may differ in physical dimensions or specific agency certifications. Verify pin compatibility and thermal performance before substitution.

Ptc Resettable Fuses FAQ

What is the maximum fault current rating for this device?

The SMD1812P110TSA/16 has a maximum fault current rating of 100 A.

Does this component require manual replacement after tripping?

No, it is a resettable fuse that automatically returns to a low-resistance state once the fault condition is removed and the device cools down.