Hi
I'm begin to use the BGA package soon..anyone can tell me the criteria
look on these BGA. What was i understand :-
1. misalignment? what is the % like?
2. Void ? what is the % allowable? What is the phenomenom & root?
3. Ball Diameter ? assume is 32mil. what is the optimum readout?
what is the root cause? if a bigger diameter obtain, it mean?
and how about a smaller diameter?
4. Z-height? assume is 24 mils in raw. What is the root &
countermeasure?
The question sound stupid but I'm believe there must be some expertise
inside this world.
thankx in advance
Alvin
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