PTR030V0185-BK

Ptc Resettable Fuses Overview

The Eaton PTR030V0185-BK is a polymer PTC resettable fuse from the PTR030V series, designed for through-hole PCB mounting with radial leads. It features a maximum voltage of 30 V and a hold current of 1.85 A. The device trips at 3.7 A and withstands a maximum fault current of 40 A. Initial resistance is typically 30 mOhms, rising to a maximum of 90 mOhms after tripping. It operates within a temperature range of -40°C to +85°C and has a lead spacing of 5 mm.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit protection by increasing resistance during overcurrent events
• Self-resetting functionality eliminates the need for manual replacement after fault clearance
• Radial kinked leads facilitate secure mechanical attachment to printed circuit boards

Ptc Resettable Fuses Applications

• Overcurrent protection for portable electronic devices
• Protection of peripheral interfaces in consumer electronics
• Circuit safeguarding in industrial control systems

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix BK indicates bulk packaging when sourcing. Confirm that the radial kinked lead configuration matches the target PCB footprint requirements. Ensure the 30 V rating aligns with the system's maximum operating voltage to prevent dielectric breakdown during normal operation.

Ptc Resettable Fuses Selection Notes

Select this component where a 1.85 A hold current is required for 30 V circuits. The radial package suits manual or wave soldering processes. Evaluate the trip current of 3.7 A against the load's surge characteristics to avoid nuisance tripping during startup phases while ensuring adequate protection against sustained overloads.

Ptc Resettable Fuses Part Context

This part belongs to the PolyTron PTR030V series of polymer PTC devices manufactured by Eaton Electronics Division. These components are engineered for compact space-constrained applications requiring reliable overcurrent protection without the maintenance associated with traditional fuses.

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 and voltage rating match before substitution.

Ptc Resettable Fuses FAQ

What is the maximum fault current this fuse can withstand?

The PTR030V0185-BK can withstand a maximum fault current of 40 A.

Does this component require manual replacement after a fault?

No, it is a self-resetting device that returns to low resistance once the fault condition is removed and the component cools down.