Semiconductor fuses are fuses that have been specifically designed to protect
semiconductor devices. They are often also referred to as solid state fuses,
rectifier fuses or ultra-rapid fuses. Semiconductor devices are extremely
sensitive to current fluctuations and require special protection. To perform
this function, semiconductor fuses are able to open the circuit (blow)
significantly quicker than other fuse types, and it is extremely important that
they are replaced by direct equivalents when required. Semiconductor fuses
belong to the utilisation categories aR, gR and gS.