RS120-110

Ptc Resettable Fuses Overview

The OptiFuse RS120-110 is a polymeric positive temperature coefficient (PTC) resettable fuse designed for through-hole mounting. It features radial leads and operates with a maximum voltage of 120V. The device maintains a hold current of 1.1A and withstands a maximum trip current of 8A. Initial resistance at 25°C is specified at 150mΩ, while post-trip resistance reaches a maximum of 380mΩ. Power dissipation capability is rated at 2.28W, with a maximum time to trip of 8.2 seconds.

Ptc Resettable Fuses Feature Summary

• Polymeric PTC technology provides automatic circuit protection that resets after fault clearance
• Through-hole radial lead configuration facilitates standard PCB integration
• Dual-element design offers superior time-delay performance characteristics

Ptc Resettable Fuses Applications

• Overcurrent protection in commercial equipment
• Circuit safeguarding in fleet vehicle systems
• Protection within high-voltage finger-safe blocks

Ptc Resettable Fuses Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm exact electrical ratings and package variations. Ensure the selected variant matches the required hold current and voltage specifications for the target application. Cross-reference datasheet parameters such as initial resistance and power dissipation to validate compatibility with system constraints before finalizing procurement orders.

Ptc Resettable Fuses Selection Notes

Select this component based on the required 1.1A hold current and 120V maximum voltage rating. Consider the thermal environment and expected fault currents when evaluating the 8A maximum trip current limit. Verify that the through-hole radial package fits the available PCB footprint and that the power dissipation rating aligns with the operating conditions of the protected circuit.

Ptc Resettable Fuses Part Context

This part belongs to the RS120 series of resettable fuses from OptiFuse. The series includes various current ratings ranging from 100mA to 3.75A, all sharing a common 120V AC maximum voltage rating. These components are engineered for general circuit protection applications requiring reliable overcurrent interruption and subsequent restoration without manual replacement.

Ptc Resettable Fuses Replacement Considerations

Direct substitutes must match the 1.1A hold current, 120V rating, and radial through-hole package. Verify equivalent PTC polymer technology and similar trip characteristics to ensure functional interchangeability in existing designs.