Mechanical Enabling for the Intel Pentium 4 Processor in the 478-Pin Package

17
Design Effectiveness
Solder Joint Considerations - 2
 Current Reference Solution Strategy
 Limit local board curvature in critical areas through two-point
strategy:
1. Top-side stiffening of the MB provided by the clip
2. Compressive preload
 Applicable to socket and MCH
Excessive Curvature Reduced Curvature
Preload +
Top-side stiffening