Roger Gibbs has submitted responses to the following questions.

Profiling for Double Sided BGA
In my opinion, you have to accept that the lower BGAs will get quite close to reflow, due to position ...

Rework Metal BGA's
We are possible the manufacturer of your rework system - PDR. We use a 'black conductive tape' which does two ...

BGA Rework - with or without solder paste
In my opinion, it must be best to try and replicate the original SMT process during rework. Therefore, one would ...

BGA Rework and Repair
Thank you for the question. My belief is in rework you try and replicate the original production process...as much as ...

Problems with defect BGA connections on large BGA's and on ENIG plated boards
In my opinion....40% of the task is materials/solderability....20% is mechanics (alignment/placement/pcb+component handling)....40% is thermal profile. I would look at making ...