RF3231-000

Ptc Resettable Fuses Overview

The Littelfuse RF3231-000 is a PolySwitch resettable PPTC fuse from the RGEF series, designed for PCB mounting. It features a radial lead termination and operates within a temperature range of -40°C to +85°C. Key electrical parameters include a hold current of 4 A, trip current of 6.8 A, maximum voltage rating of 16 VDC, and a maximum fault current rating of 100 A. The device exhibits a typical resistance of 60 mOhms and a power dissipation capability of 2.4 W. Its physical dimensions are 12.8 mm in length, 8.9 mm in width, and 3 mm in height, with a lead spacing of 5.8 mm.

Ptc Resettable Fuses Feature Summary

• Provides reliable overcurrent protection by raising resistance as it heats to limit current flow
• Functions as a solid-state resettable fuse suitable for protecting circuits, wiring harnesses, and PCB components
• Offers compact form factor for space-constrained applications

Ptc Resettable Fuses Applications

• Protection for circuits, wiring harnesses, and PCB components
• Overcurrent protection in automotive applications
• Telecom and networking equipment protection

Ptc Resettable Fuses Procurement Notes

Verify the specific package type and lead configuration against the official datasheet before procurement. Confirm that the maximum operating temperature and voltage ratings align with the target circuit requirements. Ensure compatibility with the intended soldering process and check for any specific handling instructions regarding the radial leaded format.

Ptc Resettable Fuses Selection Notes

Select this component when a low-profile, radial-leaded resettable fuse is required for 16 VDC systems. The 4 A hold current and 60 mOhms resistance make it suitable for moderate current applications. Consider the 100 A max fault current rating for short-circuit scenarios. Verify that the 85°C maximum operating temperature meets the environmental conditions of the installation site.

Ptc Resettable Fuses Part Context

This part belongs to the RGEF series of PolySwitch resettable fuses. It is categorized under surface-mount and radial-leaded devices, offering a compact solution for overcurrent protection. The series is designed for applications requiring reliable performance in automotive, telecom, and general electronic circuits.

Ptc Resettable Fuses Replacement Considerations

The part number alias RF3231-000 indicates potential interchangeability with other Littelfuse PPTC devices sharing identical electrical and mechanical specifications. Verify exact parameter matches before substitution.