Hi Technetters,

Can anyone help me?

We are curently running some BGA'S through reflow, and on inspecting them
through our Ersascope BGA inspection system have measured there is a ball
drop of around 30% from original ball size. The actual ball formation looks
very "border line" as in, has it single or double dropped. Does anyone know
the guidlines for such a drop? Is 30% the bottom end tolerance and if so
should I be looking at a drop of + 30% to insure a good looking sound joint
on the BGA.

Many thanks in advance,

Adrian Hanks.

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