Fuse resistor structure with specific melting temperature

By integrating a fusible conductor into the resistor core, current limiting and fusible protection are integrated, solving the problem of separate resistors and fuses in traditional circuits and improving the safety and reliability of electronic circuits.

CN224384005UActive Publication Date: 2026-06-19XIAMEN AIXIANGDI ELECTRONICS IND CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
XIAMEN AIXIANGDI ELECTRONICS IND CO LTD
Filing Date
2025-06-30
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

The traditional separate setting of resistors and fuses results in complex circuit structure, large space occupation, and fixed fusing characteristics that are difficult to meet the needs of specific applications. Existing integrated products have poor fusing consistency and insufficient thermal stability.

Method used

Design a fuse resistor structure with a specific melting temperature. By integrating a fusible conductor in the resistor core, the fuse is melted by an alloy material under a predetermined temperature or current condition. Combined with an insulating encapsulation layer and conductive connectors, current limiting and fuse protection are integrated.

Benefits of technology

It simplifies circuit structure, saves space, improves the speed and accuracy of protection response, and is suitable for highly integrated electronic devices, enhancing safety and reliability.

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Abstract

The utility model relates to a kind of fuse resistor structure with specific fusing temperature, including resistance core, fuse conductor, conducting connecting piece and insulating encapsulation layer.The resistance core is used to provide current-limiting function, fuse conductor is set in current path, made of alloy material under predetermined temperature or current condition fusing;Conducting connecting piece connects the both ends of resistance core for external electrical connection, and insulating encapsulation layer is used to provide mechanical protection and electrical insulation.When current or temperature exceeds set threshold, fuse conductor fuses, thereby cutting off circuit, with the advantages of current-limiting and overcurrent protection integration, compact structure, fast response.
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