A vibration resistant connector is disclosed which includes an insulating body with two juxtaposed cavities extending through the middle of the insulating body for holding a plurality of conductive terminals, and a fixing sheet secured on the insulating body. The upper surface of the semiconductor layer EP1 is positioned higher than the upper surface of the substrate straight below the gate electrode GE. Here, a low-level potential of the power supply voltage has a predetermined potential higher than zero potential.