250R120TZR

Ptc Resettable Fuses Overview

The Littelfuse 250R120TZR is a POLYFUSE resettable PTC device designed for circuit protection. It features a hold current of 120 mA and a trip current of 650 mA, with a maximum voltage rating of 60 VDC. The component supports a maximum fault current of 10 A and has an initial resistance of 4 Ohms. It operates within a temperature range of -40°C to +85°C and utilizes a radial leaded package with a 5.1 mm lead spacing.

Ptc Resettable Fuses Feature Summary

• Provides automatic resettable overcurrent protection against short-duration high voltage faults
• Features fast time-to-trip response characteristics for sensitive equipment
• Utilizes polymer PTC technology for reliable circuit interruption

Ptc Resettable Fuses Applications

• Access equipment protection
• LAN/WAN equipment safeguarding
• General electronic circuit protection

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix 'TZR' against official Littelfuse documentation to confirm tape-and-reel packaging specifications. Ensure the selected variant matches the required lead form and reel quantity for automated assembly processes. Cross-reference the datasheet to confirm compliance with RoHS standards and environmental regulations applicable to your manufacturing region before finalizing procurement orders.

Ptc Resettable Fuses Selection Notes

Select this component when designing circuits requiring rapid response to overcurrent conditions in low-voltage environments. The 120 mA hold current suits applications with steady-state currents near this threshold. Consider the 60 VDC rating and 10 A interrupt capacity to ensure adequate safety margins during fault events. Verify thermal management requirements given the operating temperature limits and power dissipation characteristics inherent to PTC devices.

Ptc Resettable Fuses Part Context

This part belongs to the 250R Series of POLYFUSE resettable PTCs from Littelfuse. The series is engineered specifically to protect against short-duration high voltage fault currents. These devices are characterized by their radial leaded construction and are marketed under the POLY-FUSE brand name for use in consumer electronics and data communication hardware.

Ptc Resettable Fuses Replacement Considerations

Publicly confirmed substitute part numbers for the 250R120TZR are not available in the provided source material. Users should consult official Littelfuse resources or authorized distributors for verified cross-reference information.