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Control of Solder Sphere Surface Micro-Roughness to Improve the Ball Attach Process

IP.com Disclosure Number: IPCOM000010735D
Publication Date: 2003-Jan-15

Publishing Venue

The IP.com Prior Art Database


Disclosed is a method that uses solder spheres with low surface micro-roughness to minimize missing and double balls during the ball attach process. Benefits include an increase in ball attach yield and a reduction in losses due to rejected units.