PTR030V0185-TR

Ptc Resettable Fuses Overview

The Eaton PTR030V0185-TR is a polymer PTC self-resetting fuse from the PolyTron™ PTR030V series. It features a maximum voltage of 30V and a hold current (Ih) of 1.85A. The trip current (It) is specified at 3.7A, with a maximum fault current rating of 40A. Initial resistance (Ri) is typically 30 mOhms, while post-trip resistance (R1) has a maximum of 90 mOhms. The device operates within a temperature range of -40°C to +85°C. It utilizes radial, round disc packaging with a 5mm lead spacing and is supplied in tape and reel format.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit protection through polymer PTC technology that resets after cooling
• Offers overcurrent protection for low-voltage applications up to 30V
• Designed for through-hole PCB mounting with radial leads

Ptc Resettable Fuses Applications

• Overcurrent protection in portable electronic devices
• Circuit protection for peripheral interfaces
• Protection for battery-powered equipment

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix TR indicates tape and reel packaging when ordering. Confirm that the 30V rating and 1.85A hold current align with the target circuit requirements. Ensure compatibility with the specified operating temperature range of -40°C to +85°C. Check for RoHS compliance status if required by the manufacturing process.

Ptc Resettable Fuses Selection Notes

Select this component when a resettable fuse with a 30V maximum voltage and 1.85A holding current is required. Consider the 90 mOhms maximum post-trip resistance for voltage drop calculations. The radial package suits through-hole assembly processes. Evaluate the 40A maximum fault current capability against potential short-circuit scenarios in the design.

Ptc Resettable Fuses Part Context

This part belongs to the Eaton PolyTron™ PTR Series, which focuses on radial lead overcurrent protection devices. The PTR030V series specifically targets applications requiring 30V ratings. These components serve as alternatives to traditional fuses by offering reusable protection characteristics without manual replacement after a fault event.

Ptc Resettable Fuses Replacement Considerations

Direct substitutes include Littelfuse 30R185UPR, Bourns MF-R185, SCHURTER PFRA.185.2, and Littelfuse RUEF185. Verify electrical parameters such as hold current, voltage rating, and physical dimensions before substitution.