A pressure sensor includes an electrically insulating material covering wires for transmitting an electrical signal generated by a semiconductor pressure-sensing unit, the joints between the wires and the pressure-sensing unit, and the joints between the wires and leads connected to the wires for leading the electrical signal to the outside of the body casing of the sensor. Thus, detection of pressure is possible even in an intense-vibration environment, and it is also possible to reduce influences by changes in temperature.
