RUEF700K-2

Ptc Resettable Fuses Overview

The Littelfuse RUEF700K-2 is a PolySwitch resettable PPTC fuse from the RUEF series, designed for PCB mount applications with radial termination. It features a maximum voltage of 30 V and a hold current of 7 A. The trip current is specified at 14 A, with a maximum rated current of 100 A. Initial resistance is 30 mOhms maximum. Operating temperature ranges from -40 C to +85 C. Dimensions are 27.7 mm length, 19.1 mm width, and 3 mm height. Power dissipation is 3.8 W.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit protection through polymer positive temperature coefficient technology
• Offers repeatable reset functionality after fault conditions clear
• Designed for high-current applications with robust thermal performance

Ptc Resettable Fuses Applications

• Overcurrent protection in industrial control systems
• Battery pack protection in portable electronics
• Power supply input protection circuits

Ptc Resettable Fuses Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm package type matches radial leaded requirements for PCB mounting. Ensure operating temperature range aligns with system environmental constraints. Validate electrical parameters including hold and trip currents for circuit compatibility. Check certification status such as UL or TUV if required for end-product compliance.

Ptc Resettable Fuses Selection Notes

Select this component when a 7 A hold current and 30 V maximum voltage rating suit the application design. Consider the radial package style for through-hole PCB assembly processes. Evaluate the 30 mOhms initial resistance impact on power loss in low-voltage circuits. Assess the 100 A maximum fault current capability against potential surge conditions. Verify that the 3.8 W power dissipation rating accommodates thermal management requirements.

Ptc Resettable Fuses Part Context

This part belongs to the Littelfuse RUEF series of PolySwitch resettable fuses. These devices utilize polymer PTC technology for overcurrent protection. The series offers various current ratings and voltage options for diverse electronic applications. The RUEF700K-2 specifically targets higher current needs within the 30 V domain.

Ptc Resettable Fuses Replacement Considerations

RUEF700K-2HF is an alternative variant within the same series offering similar electrical characteristics.