LVRL075S

Ptc Resettable Fuses Overview

The Littelfuse LVRL075S is a discontinued PolySwitch radial-leaded polymer PTC resettable fuse designed for overcurrent protection. It features a maximum operating voltage of 120V and a hold current (Ih) of 750 mA. The device trips at 1.52 A with a maximum trip time of 14.4 seconds. Initial resistance is typically 250 mOhms, rising to a maximum of 690 mOhms after tripping. Rated for a maximum fault current of 7.5 A, it operates within a temperature range of -20°C to 85°C. The component utilizes through-hole radial mounting with a disc package.

Ptc Resettable Fuses Feature Summary

• Polymer-based solid-state design that increases resistance upon heating to limit current flow
• Automatic reset functionality restores circuit continuity after fault conditions clear
• Radial leaded construction facilitates through-hole PCB integration

Ptc Resettable Fuses Applications

• Protection of telephony and networking equipment from overcurrent events
• Overcurrent safeguarding for automotive actuators and small motors
• Circuit protection for power supply components and wiring harnesses

Ptc Resettable Fuses Procurement Notes

Verify the obsolete status of the LVRL075S before initiating procurement processes. Confirm availability of approved substitutes such as LVR075S-240 or compatible equivalents from other manufacturers like Bel Fuse. Ensure replacement components match original electrical ratings and physical dimensions to maintain system integrity and compliance with safety certifications.

Ptc Resettable Fuses Selection Notes

Select this component for applications requiring reliable overcurrent protection in low-current circuits. Consider the 750 mA hold current and 120V rating when designing protection schemes. Evaluate thermal management requirements given the -20°C to 85°C operating range. Verify that the radial leaded form factor aligns with existing PCB layout constraints and manufacturing processes.

Ptc Resettable Fuses Part Context

The LVRL075S belongs to the PolySwitch LVRL series of resettable fuses manufactured by Littelfuse Inc. This series provides robust circuit protection solutions using polymer technology. As part of the broader overcurrent protection portfolio, these devices offer a cost-effective alternative to traditional fuses by eliminating the need for manual replacement after fault events.

Ptc Resettable Fuses Replacement Considerations

Public confirmed substitute part numbers include LVR075S-240 from Littelfuse Inc. and 0ZRM0075AF1E from Bel Fuse Inc. These alternatives provide similar electrical characteristics and should be evaluated for mechanical fit and certification compatibility.