| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent hair cracks around the edge of a resin sealed body between terminals. <P>SOLUTION: In a QFN-IC 25 comprising a resin sealed body 21 of a pellet 19, and a plurality of terminals 24 exposed at the circumferential edge part on the lower surface of the resin sealed body 21 where the pellet 19 and the terminals 24 are wire bonded in the resin sealed body 21, a beveled part 22 is formed at the circumferential edge part of the resin sealed body 21 between adjacent terminals 24 and 24. The beveled part 22 is molded simultaneously with the resin sealed body 21 by a protrusion 39 for forming a beveled part. The terminals 24 are cut at close proximity to the circumferential edge part of the resin sealed body 21. Since the beveled part is formed previously, generation of hair crack can be prevented at the circumferential edge part of the resin sealed body between the terminals when they are cut and thereby failure of mounting due to missing of the circumferential edge part starting from the hair crack can be avoided. <P>COPYRIGHT: (C)2004,JPO</p> |
