Pbフリーはんだ接続部のエレクトロマイグレーション現象解明の基礎研究

抄録

In flip chip technology, electromigration affects the reliability of the solder interconnections. When investigating electromigration in the solder joint, it is essential to examine the effective charge number (Z*) of the atoms involved in the electromigration. In this study, first, a solder joint with almost equivalent current crowding on electromigration was produced by using 1mm thick Cu plates. After that, nine markers were formed on the cross-sectioned solder joint. Then, the migration length of each marker was systematically measured under two conditions. The Z* of each marker was examined by the marker's migration length.