Patent ID: 7600422

Claim:
An electronic component packaging structure comprising: a printed-circuit board having a wiring layer formed on a surface or inside of a substrate, the printed-circuit board having a hole or a concave on the substrate; and an electronic component connected to the wiring layer so as to be joined electrically and mechanically to the printed-circuit board, with at least a main body portion of the electronic component being housed in the hole or the concave; wherein the electronic component packaging structure is a thermal mass flow meter comprising a pipe arrangement that allows a fluid to flow therein, a chip-type heat-generating element anchored on the surface on the periphery of the pipe arrangement and used for heating the fluid in the pipe arrangement, and a pair of chip-type temperature sensors anchored at positions on the upstream side and the downstream side of the heat-generating element the same distance apart therefrom along the flowing direction of the fluid in the pipe arrangement, on the surface of the pipe arrangement, the chip-type temperature sensors being formed as members separated from the heat-generating element, wherein the heat-generating element and the chip-type temperature sensors correspond to the electronic components, with convex portions thereof on a side opposite to the side to be anchored onto the pipe arrangement being housed in the hole or the concave of the printed-circuit board, and terminals of the electronic components are connected to the wiring layer of the printed-circuit board so as to be joined to the printed-circuit board.