VLR230SF

Ptc Resettable Fuses Overview

The VLR230SF is a PolySwitch resettable fuse from Littelfuse, designed for overcurrent protection in electronic circuits. It belongs to the PPTC (Polymeric Positive Temperature Coefficient) category, functioning as a self-resetting device that increases resistance significantly upon overheating due to excessive current. The component features an axial lead or strap mounting configuration with specific physical dimensions: a length of 23.1 mm and a height of 0.8 mm. It has a power dissipation rating of 1.4 W and supports a maximum current capacity of 100 A. The device exhibits a time-to-trip characteristic of 5 seconds under specified conditions, ensuring reliable circuit interruption during fault events.

Ptc Resettable Fuses Feature Summary

• Self-resetting polymeric positive temperature coefficient technology provides automatic circuit recovery after fault clearance without manual replacement.
• High surge current capability allows the device to withstand transient overcurrent events while maintaining structural integrity.
• Compact axial form factor facilitates straightforward integration into various printed circuit board layouts and user-defined mounting configurations.

Ptc Resettable Fuses Applications

• Overcurrent protection for portable electronics and battery-powered devices
• Circuit safeguarding in telecommunications equipment and data ports
• Protection for automotive electronic control modules and sensors

Ptc Resettable Fuses Procurement Notes

Verify the exact package variant and lead configuration against the official Littelfuse datasheet before ordering, as suffixes may indicate different mechanical forms. Confirm that the operating voltage and hold current ratings align with the target circuit design parameters. Ensure compliance with RoHS standards if required by the end application. Cross-reference the part number with authorized distributors to guarantee authenticity and traceability.

Ptc Resettable Fuses Selection Notes

Select this component based on its 2.30 A hold current and 100 A max current ratings to match the specific load requirements. Evaluate the thermal environment to ensure the 1.4 W power dissipation rating is sufficient for the expected ambient temperatures. Consider the 5-second trip time for coordination with other protective devices in the system. Verify that the physical dimensions fit within the available PCB space constraints.

Ptc Resettable Fuses Part Context

The VLR230SF is part of Littelfuse's PolySwitch series, which specializes in resettable fuses for circuit protection. This series offers alternatives to traditional one-time fuses by providing reusable protection mechanisms. The product line is engineered for applications requiring robust overcurrent defense with minimal maintenance, serving industries ranging from consumer electronics to industrial controls.

Ptc Resettable Fuses Replacement Considerations

Consult Littelfuse documentation for direct cross-references. Generic substitutes may differ in trip characteristics or physical dimensions. Verify electrical compatibility before replacing.