Physical quantity detection device

A physical quantity detecting device comprising:

• a support body on which a flow rate detector and a processor are mounted;
• and
• a circuit board having an accommodating portion in which a part of the support body is accommodated,
• wherein,
• in the support body, at least a part in a thickness direction of the support body is accommodated in the accommodating portion, and a part including the flow rate detector protrudes from the accommodating portion,
• the accommodating portion is formed by cutting out a part of the circuit board,
• the support body is fixed to places facing each other with the accommodating portion of the circuit board interposed between the places,
• the support body has a plurality of connection terminals protruding in directions away from each other, and
• the plurality of connection terminals and the circuit board are joined by a joining member to be electrically conductive;
• a circuit chamber which accommodates the circuit board;
• and
• a sub-passage which is arranged on a lateral side of the circuit chamber and through which a gas to be measured flows,
• wherein
• the flow rate detector in the support body is arranged in the sub-passage,
• in the support body, a part including the flow rate detector protrudes in a direction orthogonal to a passage direction of the sub-passage, and the plurality of connection terminals are arranged to be divided into one side and another side in the passage direction of the sub-passage,
• in the circuit board, a first sensor configured to detect a first physical quantity and a second sensor configured to detect a second physical quantity are arranged on the one side and the other side in the passage direction of the sub-passage with the accommodating portion interposed between the first sensor and the second sensor.