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Subject:	Re: BGA periphery keep out zone
From:	Tom Brendlinger <[log in to unmask]>
Reply To:	TechNet E-Mail Forum <[log in to unmask]>, Tom Brendlinger <[log in to unmask]>
Date:	Tue, 7 Mar 2017 15:24:55 -0500
Content-Type:	text/plain
Parts/Attachments:	text/plain (47 lines)

IPC-7351 specifies the courtyard for bottom only terminations of 0.1 to 0.5
mm for density C to density A. However, I think what you're looking for is
the 0.1" recommendation that I recall from my CID class, which as far as I
know is just a guideline for rework.

I would suggest looking in IPC-7095C, which deals with BGAs specifically,
but I don't own a copy so I can't say for sure there's anything helpful in
there.

Tom Brendlinger, CID

On Tue, Mar 7, 2017 at 3:06 PM, Iulia Muntele <[log in to unmask]>
wrote:

> None that I can think off. There should not be any limitations at
> placement, maybe at rework and inspection.
>
> On Tue, Mar 7, 2017 at 2:04 PM, <[log in to unmask]> wrote:
>
> > Fellow TechNetters:
> >
> >     Which IPC Standard cover the above stated limits for components
> > placement on the periphery of a BGA foot print?
> >
> > Victor,
> >
>
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