FRX250-90F

Ptc Resettable Fuses Overview

The FRX250-90F is a radial leaded PTC resettable fuse from the FRX90V series, manufactured by RFE/Fuzetec. It features a maximum operating voltage of 72V with a 90V interrupt rating and a hold current (Ih) of 2.5A. The device exhibits a minimum initial resistance (Ri) of 50 mOhms and a maximum post-trip resistance (R1) of 130 mOhms. Designed for through-hole mounting in a disc package, it operates within a temperature range of -40°C to 85°C.

Ptc Resettable Fuses Feature Summary

• Solid-state protection mechanism utilizing polymeric positive temperature coefficient technology
• Radial leaded construction suitable for through-hole PCB mounting
• Capable of automatic circuit restoration after fault conditions clear

Ptc Resettable Fuses Applications

• Wide variety of electronic equipment
• Automotive industry applications
• Circuit protection for low voltage systems

Ptc Resettable Fuses Procurement Notes

Verify that the specific FRX250-90F designation matches the required 2.5A hold current and 72V rating for your design. Confirm the component meets RoHS compliance standards if lead-free assembly is mandated. Ensure the radial leaded form factor fits the target PCB layout constraints before finalizing procurement specifications.

Ptc Resettable Fuses Selection Notes

Select this component when a 2.5A continuous current capacity is required alongside a 72V system voltage. The FRX90V series offers a balance of low hold current and robust trip characteristics. Consider the 130 mOhms maximum post-trip resistance for thermal management calculations in enclosed environments where heat dissipation may be limited.

Ptc Resettable Fuses Part Context

This part belongs to the FRX Series family of radial leaded PPTC fuses. The series spans various hold currents from 50mA to 3.75A, offering standardized protection solutions. The FRX250-90F specifically addresses mid-range current requirements within the 90V interrupt voltage class, providing a reliable alternative to traditional fusible links.

Ptc Resettable Fuses Replacement Considerations

Cross-reference with other FRX90V series variants such as FRX185-90F or FRX300-90F if current ratings differ. Verify that substitute components maintain identical 72V maximum operating voltage and radial leaded package dimensions to ensure mechanical compatibility.