NIS5431MT1TXG

Current Regulation/Management Overview

The NIS5431MT1TXG is a resettable polymeric positive temperature coefficient (PPTC) device manufactured by onsemi, functioning as an electronic fuse. It provides overcurrent protection with a maximum rated current of 4.5 A and a hold current of 2.2 A. The component trips at 3.1 A and supports a maximum voltage of 14 VDC. It features a low resistance of 55 mOhms and operates within a temperature range of -40°C to +150°C. The device utilizes SMD/SMT mounting in a PCB mount configuration.

Current Regulation/Management Feature Summary

• Provides automatic circuit protection through self-resetting PPTC technology
• Functions as an electronic fuse for overcurrent safeguarding
• Supports surface-mount installation for compact PCB integration

Current Regulation/Management Applications

• Overcurrent protection in electronic circuits
• Battery pack safeguarding systems
• Portable device power management

Current Regulation/Management Procurement Notes

Verify component status carefully before procurement planning. Official documentation indicates this specific part number has reached the end-of-life stage. Manufacturers typically discontinue production for such items, meaning new manufacturing is halted. Supply availability may be limited to existing stock or secondary markets. Confirm final availability directly with authorized distributors or suppliers prior to design finalization to avoid supply chain disruptions.

Current Regulation/Management Selection Notes

Select this component when designing circuits requiring robust overcurrent protection with a 14 VDC rating. Ensure the application current remains below the 2.2 A hold threshold while accounting for the 3.1 A trip point. Verify that the operating environment stays within the specified -40°C to +150°C range. Consider the 55 mOhms resistance impact on power loss. Note the end-of-life status when planning long-term product lifecycles.

Current Regulation/Management Part Context

This device belongs to the NIS series of resettable fuses from onsemi. These components are designed to replace traditional fusible links in modern electronics. The series offers various current and voltage ratings to suit different protection needs. The NIS5431 variant specifically targets applications requiring moderate current handling with fast response characteristics.

Current Regulation/Management Replacement Considerations

Due to the end-of-life status, identify alternative PPTC devices with matching electrical parameters. Look for parts with similar hold current, trip current, and voltage ratings. Verify package compatibility and thermal performance. Consult manufacturer substitution guides for recommended cross-references.