2920L200/24DR

Ptc Resettable Fuses Overview

The Littelfuse 2920L200/24DR is a surface-mount PolySwitch resettable PTC fuse designed for overcurrent protection. It features a 2 A hold current and a 4 A trip current, with a maximum voltage rating of 24 VDC. The device has a low resistance of 50 mΩ minimum and 120 mΩ maximum, supporting a fault current rating of 40 A. It operates within a temperature range of -40°C to +85°C and dissipates up to 1.5 W. The component measures 7.98 mm in length, 5.44 mm in width, and 1.25 mm in height, utilizing matte tin terminals for PCB mounting.

Ptc Resettable Fuses Feature Summary

• Provides reliable overcurrent protection by raising resistance as it heats to limit current flow during fault conditions.
• Offers automatic reset functionality after the fault condition is removed and the device cools down.
• Features a compact surface-mount form factor suitable for space-constrained printed circuit board designs.

Ptc Resettable Fuses Applications

• Protection of battery packs and rechargeable batteries from overcurrent and short circuits
• Overcurrent safeguarding for portable handheld electronic devices
• Circuit protection for LED lighting systems and power adapters

Ptc Resettable Fuses Procurement Notes

Verify that the specific suffix /24DR aligns with the required 24VDC voltage rating and 2A hold current specifications for your design. Confirm moisture sensitivity level (MSL) handling requirements during assembly. Ensure the thermal environment remains within the specified -40°C to +85°C operating range to maintain performance integrity.

Ptc Resettable Fuses Selection Notes

Select this component when a 2 A continuous operating current and 24 VDC maximum voltage are required. Consider the 120 mΩ maximum resistance for voltage drop calculations. Evaluate the 40 A interrupting rating against potential fault currents. Ensure the 2920 package dimensions fit the available PCB footprint constraints.

Ptc Resettable Fuses Part Context

This part belongs to the 2920L series of PolySwitch resettable fuses manufactured by Littelfuse. These devices utilize polymeric positive temperature coefficient technology to provide reusable circuit protection. The series is engineered for surface-mount applications, offering an alternative to traditional one-time fusible links in modern electronics manufacturing.

Ptc Resettable Fuses Replacement Considerations

Cross-reference with other 2920L series variants such as 2920L300DR or 2920L250DR if different current ratings are needed. Verify that any substitute maintains the same 24VDC voltage rating and 2920 package dimensions to ensure mechanical and electrical compatibility.