Sensor

A sensor comprising:

• a joint comprising:
• a port through which target fluid is introduced;
• and a projecting portion that projects from a bottom of the joint along the port;
• a sensor module being provided to the joint, the sensor module comprising a detector that is displaceable in response to a pressure of the introduced target fluid;
• a housing in which the sensor module is accommodated, the housing comprising a terminal;
• a conductive member being configured to electrically connect the detector of the sensor module to the terminal;
• a cap-shaped synthetic resin base being provided to the projecting portion of the joint, the synthetic resin base having a top provided with an opening in which the detector of the sensor module is exposed, the synthetic resin base having an inner circumferential surface slidable along an outer circumferential surface of the projecting portion of the joint;
• and
• an electronic component being provided to a lateral portion of the synthetic resin base that intersects the top of the synthetic resin base provided with the opening, wherein
• the conductive member comprises:
• a flexible circuit board having a first end connected to the terminal and a second end connected to the synthetic resin base;
• and a three-dimensional circuit being connected to the electronic component, the three-dimensional circuit being three-dimensionally arranged continuously along the top and the lateral portion of the synthetic resin base, the three-dimensional circuit having one end connected to the flexible circuit board.