Thanks
Brad. After research, we found the design is unbalanced. This is a special, OEM,
BGA where DFM was not taken into consideration. TAKE NOTE
DESIGNERS.
Rick
Rick,
In my
opinion; no, there is no way to rid yourself -reliably- of bow and or
twist on an existing PBGA. It would seem to me it is a standard
warpage
issue that is probably rooted in an unbalanced design, not so
much material.
A pretty broad statement but I think true.
If you are successful in straightening out the curve, I think it will come
back to haunt you.... more sooner than later.
Coretec Brad