Finfet esd device with fin-cut isolation region

Abstract

An electrostatic discharge (ESD) device having a small size, a low turn-on voltage, and a low on resistance and an ESD protection circuit including the ESD device are provided. The ESD device includes a well formed in a substrate to have a first conductive type, an active region being defined at an upper portion of the substrate, a plurality of fins extending in a first direction to have a structure protruding from the substrate, a first conductive impurity region formed with first conductive impurities, a second conductive impurity region formed with second conductive impurities, and a fin-cut isolation region disposed between the first conductive impurity region and the second conductive impurity region in the first direction to cut each fin, wherein a bottom surface of the fin-cut isolation region is higher than a bottom surface of the active region.