摘要 |
1. Light-weight support intende to received electronic components in leadless chipcarrier and formed from pack-rolled metal materials to adjust the coefficient of thermal expansion of the support to that the housings, characterized in that the support is composed of a corrugated metal sheet (12) fixed between two smooth sheets (10, 11), of which at least one receive the electronic components, and in that the two smooth sheets and the corrugated sheet are of pack-rolled metal materials. |