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Electronic fuses (spur) are solid-state devices that protect electronic circuits from overcurrent conditions. Unlike traditional fuses, they can be electronically reset, offering a more convenient and efficient solution for circuit protection. eFuses protect against short circuits, overloads, and other fault conditions, preventing damage to devices and wiring.

Resettable chip fuses, also known as PTC (Pozitiven temperaturni koeficient) resettable fuses or PPTC (Polymeric Positive Temperature Coefficient) naprave, are circuit protection components that automatically reset after a fault condition is cleared. They protect against overcurrent and over-temperature situations, offering a self-resetting solution that enhances reliability and reduces downtime in various applications.

Chip fuses are miniaturized circuit protection components that use surface mount technology (SMT). They are mainly divided into two categories: one-time fuse type and self-recovery type. The following is a detailed introduction from the aspects of classification, princip delovanja, and application: