RF5054-000

Ptc Resettable Fuses Overview

The RF5054-000 is a PolySwitch resettable PPTC fuse manufactured by Littelfuse, designed for surface-mount applications in the 0805 package. It features a hold current of 750 mA and a trip current of 1.5 A, with a maximum voltage rating of 6 VDC. The device offers a minimum resistance of 350 mOhms and a maximum power dissipation of 700 mW. It supports a fault current rating of 40 A and operates within a temperature range of -40°C to +85°C.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit protection against overcurrent conditions through self-resetting functionality
• Designed for compact surface-mount integration on printed circuit boards
• Ensures reliable performance across specified industrial temperature ranges

Ptc Resettable Fuses Applications

• Overcurrent protection for low-voltage electronic circuits
• Protection of portable consumer electronics components
• Surge protection in data port interfaces

Ptc Resettable Fuses Procurement Notes

Verify component authenticity by cross-referencing the manufacturer part number RF5054-000 with official Littelfuse documentation. Confirm that the received devices match the specified 0805 SMD package and electrical ratings. Ensure compliance with RoHS standards and check for any specific handling requirements during assembly to maintain device integrity.

Ptc Resettable Fuses Selection Notes

Select this component when designing circuits requiring overcurrent protection at low voltages up to 6 VDC. The 750 mA hold current suits applications with moderate steady-state loads. Consider the 0805 footprint for space-constrained designs. Evaluate thermal management needs given the 700 mW power dissipation limit and operating temperature constraints.

Ptc Resettable Fuses Part Context

This device belongs to Littelfuse's PolySwitch family of resettable fuses, which utilize polymer positive temperature coefficient technology. These components serve as reusable alternatives to traditional one-time fuses, offering cost-effective protection for sensitive electronics by automatically interrupting current flow during fault conditions and resetting upon cooling.

Ptc Resettable Fuses Replacement Considerations

The part number alias PICOASMDC075S-2 indicates a direct equivalent designation. Verify compatibility with existing board layouts and electrical specifications before substitution. Ensure the replacement maintains the same 0805 package dimensions and voltage ratings.