METHOD AND APPARATUS FOR COINING SOLDER BALLS ON AN ELECTRICAL CIRCUIT PACKAGE

摘要

A method and apparatus are provided for coining solder balls on an electrical circuit package. Generally, this method includes placing a slug on one or more of the solder balls; and applying sufficient pressure for a sufficient period of time on the slug to flatten the surface of the solder balls so as to form planar solder coins. The apparatus includes a press; a ram attached to the press; a platform for receiving the package and a slug placed upon the solder balls.