| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an electronic circuit module that can fix the leg piece of a sheet metal cover reliably, can utilize the entire bottom surface of a wiring board as the formation region of a land for external connection, and can promote miniaturization easily, and to provide a method of manufacturing the electronic circuit module. <P>SOLUTION: The electronic circuit module 1 has the wiring board 2 having a wiring pattern 20 and distributing the land 21 for external connection on a bottom surface for arrangement, an electronic component 3 mounted onto the ceiling surface of the wiring board 2, and the sheet metal cover 4 covering the electronic component 3. On the wiring board 2, there are a bottomed mounting hole 22 into which the leg piece 40 of the sheet metal cover 4 is inserted and a vertical hole 23 that communicates with the mounting hole 22 and releases air and a long hole 24. The inner wall section of the mounting hole 22 is composed of a metal film 22a to which the leg piece 40 is joined by solder, and the vertical hole 23 is exposed at a ceiling surface corner on the wiring board 2 not covered with the sheet metal cover 4. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
