Why are semiconductor fuses used in electronic circuits?

Lawsonfuse01 Sep, 2025Other

Semiconductor fuses are components of electronic circuits that are intended to protect sensitive components (diodes, thyristors, IGBTs, transistors) from overcurrent and short-circuit conditions. All of these components are highly sensitive devices that can be damaged by current surges in milliseconds. Semiconductor fuses are designed to trip very quickly with low I²t values, allowing them to safely interrupt fault currents before any damage occurs. They provide precise protection compared to conventional fuses, and minimize let-through energy, making them effective devices for use in power electronic systems, industrial drives, UPS systems, and inverters. Their fast response time helps improve overall reliability and life of electronic equipment.