16R400GPR

Ptc Resettable Fuses Overview

The Littelfuse 16R400GPR is a PolySwitch resettable PTC device from the 16R series, designed for overcurrent protection in general applications. It features radial leads and operates at a maximum voltage of 16 VDC. The component maintains a hold current of 4.0 A and trips at a typical trip current of 6.0 A. It supports a maximum fault current rating of 100 A with a minimum resistance of 25 mOhms. Power dissipation reaches 2.8 W, while operating temperatures range from -40°C to +85°C. The package dimensions are 21.7 mm in length, 14 mm in width, and 3 mm in height, with a lead spacing of 5.1 mm.

Ptc Resettable Fuses Feature Summary

• Provides reliable overcurrent protection by raising resistance as it heats to limit current flow during fault conditions.
• Offers automatic reset functionality after cooling, eliminating the need for manual replacement following an overcurrent event.
• Features compact radial-leaded packaging suitable for PCB mounting in space-constrained designs.

Ptc Resettable Fuses Applications

• Protection of circuits, wiring harnesses, and PCB components in general electronic equipment.
• Overcurrent safeguarding for automotive actuators, screens, and small motors in commercial and passenger vehicles.
• Defense against high-voltage fault currents and overcurrent events in telephony and networking equipment.

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix GPR against official Littelfuse documentation to confirm tape-and-reel packaging configuration. Ensure the requested quantity aligns with standard reel sizes or cut-tape availability. Cross-reference the RoHS compliance status and REACH SVHC declarations with the latest manufacturer data sheets prior to ordering. Confirm that the radial lead pitch matches the target PCB footprint requirements.

Ptc Resettable Fuses Selection Notes

Select this component when circuit protection requires a 16 VDC maximum rating and a 4.0 A hold current. Evaluate the 100 A short-circuit rating to ensure adequate fault tolerance for the application. Consider the 25 mOhms minimum resistance for low-power loss requirements. Verify that the -40°C to +85°C operating temperature range meets environmental constraints. Compare power dissipation capabilities against thermal management strategies.

Ptc Resettable Fuses Part Context

The 16R400GPR belongs to the 16R Series of PolySwitch resettable fuses manufactured by Littelfuse. This series provides solid-state PTC devices designed for general-purpose overcurrent protection. The radial-leaded form factor distinguishes it from surface-mount variants within the broader PolySwitch portfolio. These devices serve as reusable alternatives to traditional one-time fuses in various industrial and consumer electronics sectors.

Ptc Resettable Fuses Replacement Considerations

Compatible substitutes include other 16R series parts with matching electrical ratings, such as the 16R900GMR for higher current applications. Verify that alternative radial-leaded PPTCs maintain identical voltage and current specifications. Ensure mechanical compatibility regarding lead spacing and body dimensions before substitution.