Advanced Micro Devices Inc (AMD)

[SemiconEng]

When the process is brand new, you can think of every lot as a rocket lot, but the TPT is not going to be the 9 days that Semi was talking about... Because the equipment would not be so highly tuned and people trained on it as they are later in the development cycle.


Right, I don't want to give anyone a mis-impression. 9 days was a record, but it was also a "Rush Effort", because a prominent presentation was coming up. Multi-lots were started, in case of tool breakage, In each step of the process, the best performing tool was used, and the tool at the next step was held open waiting for the lot to arrive. The lots were hand carried by specific owners, no defect inspection or critical dimension measurement was done at any layer, and each tool had the process engineer, and the best equipment technician, standing in front of the tool while the lot ran in case anything went wrong. It was a 1 time effort, not a normal Hot Lot run, and not exactly what you would call Normal Operations.


BTW, as I recall, the lots yielded well enough, if they weren't enginering lots...... to otherwise sell as product