RUSBF250-2

Ptc Resettable Fuses Overview

The Littelfuse RUSBF250-2 is a PolySwitch resettable fuse designed for overcurrent protection in electronic circuits. It features a radial lead package suitable for PCB mounting, with a holding current of 2.5 A and a trip current of 5 A. The device supports a maximum voltage of 16 V and can withstand a maximum fault current of 40 A. Its initial resistance is typically 60 mOhms, and it operates within a temperature range of -40°C to +85°C. The component measures 18.3 mm in length, 11.4 mm in width, and 3 mm in height, with a power dissipation rating of 1.2 W.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit recovery after fault conditions without manual replacement
• Utilizes polymer PTC technology for reliable overcurrent protection
• Features radial leads for through-hole PCB integration

Ptc Resettable Fuses Applications

• Portable electronics protection
• Peripheral interface circuits
• Battery pack safeguarding

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix '-2' against official Littelfuse documentation to confirm if it denotes a distinct variant or packaging specification compared to the standard RUSBF250. Ensure compatibility with assembly processes by checking datasheet recommendations for soldering profiles and thermal handling limits prior to implementation.

Ptc Resettable Fuses Selection Notes

Select this component when a 2.5 A holding current and 16 V maximum voltage rating align with circuit requirements. Consider the radial form factor for applications requiring through-hole mounting. Evaluate the 40 A maximum interrupt rating to ensure adequate safety margins against potential short-circuit currents in the target system design.

Ptc Resettable Fuses Part Context

This part belongs to the Littelfuse PolySwitch RUSBF series, which specializes in resettable fuses for consumer and industrial electronics. The series offers various current ratings and package options to provide flexible overcurrent protection solutions for diverse electronic applications requiring reliable circuit safeguarding.

Ptc Resettable Fuses Replacement Considerations

The SMD250F-2 serves as a surface-mount alternative within the same manufacturer lineup, offering similar electrical characteristics but in an SMD/SMT package format rather than radial leads.