Patent ID: 11963307
Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
Field: Machine tools (Mechanical engineering)
Classification: CPC B  H | IPC B  H

Claim 7:
8. A system comprising:
a processor; and
a memory in communication with the processor, the memory containing program instructions that, when executed by the processor, are configured to cause the processor to perform a method, the method comprising:
predicting a solder ball ball-grid-array defect that could occur during reflow of a ball-grid-array assembly;
assigning an initial via suction pattern to mitigate the solder ball ball-grid-array defect;
applying a vacuum head to a via in the ball-grid-array assembly, wherein a solder ball is located at the opposite end of the via;
applying suction to the via based on the initial via suction pattern, wherein the suction draws a portion of the solder ball into the via during reflow;
analyzing, during reflow, a real-time warping pattern of the ball-grid-array assembly;
adjusting, based on the real-time warping pattern, the initial via suction pattern, resulting in an updated via suction pattern; and
applying suction to the via based on the updated via suction pattern.