Steve, I've seen this before.

You are probably right in assuming that the balls are gouged at electrical
test. I'd just verify that the gouges are in the same location on each of
the balls.

When we've seen this, it hasn't caused a problem.

> ----------
> From:         Stephen R. Gregory[SMTP:[log in to unmask]]
> Reply To:     TechNet E-Mail Forum.;[log in to unmask]
> Sent:         Monday, April 17, 2000 12:07 PM
> To:   [log in to unmask]
> Subject:      [TN] Gouged BGA Balls...
>
> Hi All!
>
> We just got some BGA's in (it was a shortage for a kit), and there were a
> few
> parts that were missing balls. I looked at the parts under a microscope
> and
> observed that each ball had some gouges in the sides of the ball.
>
> I'm assuming that those gouges are from an electrical test that's done on
> the
> part, and always occur on BGA's...I just never noticed it before. Is my
> assumption correct?
>
> Or is this something I should worry about with these parts? (The one's
> without the balls I'm rejecting of course...)
>
> -Steve Gregory-
>
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