1. Purpose of the gate
The pilot line has qualified tools, released work instructions, trained operators, inline controls and known good die rules in place, so product-like lots can start.
Pilot lots are expensive, especially for multi-die packages that consume several good dies each. The review makes sure the line is ready to learn from every lot: that each unit can be traced to its dies, tools and material lots, that controls will catch excursions, and that incoming dies meet agreed rules.
It freezes the known good die and test access strategy, because die suppliers and lead customers build their test flows to it.
13 more sections for registered members.