RUSBF120-AP

Ptc Resettable Fuses Overview

The RUSBF120-AP is a polymeric resettable PTC fuse manufactured by Littelfuse Inc. It features a radial disc package designed for through-hole mounting. The device provides overcurrent protection with a hold current of 1.2A and a trip current of 2.4A. It operates at a maximum voltage of 6V DC. The component is classified as a PolySwitch resettable fuse, offering reusable circuit protection against overcurrent conditions.

Ptc Resettable Fuses Feature Summary

• Polymeric PTC technology enables automatic reset after fault clearance
• Radial disc form factor supports standard through-hole PCB assembly
• Provides reusable overcurrent protection for low-voltage circuits

Ptc Resettable Fuses Applications

• USB port overcurrent protection
• Low-voltage electronic circuit safeguarding
• Consumer electronics power line protection

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix designation when sourcing replacements, as the RUSBF120-AP is an obsolete part number. Confirm that substitute components match the required electrical ratings and physical dimensions to ensure compatibility with existing board layouts and thermal requirements.

Ptc Resettable Fuses Selection Notes

Select replacement devices based on identical hold current and voltage ratings to maintain circuit integrity. Ensure the alternative component utilizes a compatible radial disc package for mechanical fit. Validate that the substitute meets the same safety certifications and performance standards required for the original design application.

Ptc Resettable Fuses Part Context

This component belongs to the Littelfuse PolySwitch family of resettable fuses. These devices are engineered for high-volume electronics manufacturing. The series offers various form factors and termination methods to accommodate diverse design constraints while providing reliable overcurrent protection.

Ptc Resettable Fuses Replacement Considerations

The RUSBF120-2 is a confirmed active substitute for the obsolete RUSBF120-AP. Both parts share identical electrical specifications and physical characteristics, allowing for direct interchangeability in existing designs without modification.