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Tue, 9 Dec 1997 14:22:47 -0500 |
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BGA's can be assembled on the bottom side of a PWB without using
adhesive depending upon the weight, and package size. Adhesive is not
necessary, and not recommended due to repair issues.
Howard Cyker
>----------
>From: Gino Cochella[SMTP:[log in to unmask]]
>Sent: Tuesday, December 09, 1997 10:53 AM
>To: [log in to unmask]
>Subject: [TN] BGA: Double Side
>
> Subject: Time: 8:30 AM
> BGA: Double Side Date: 12/9/97
>
>Hi everyone,
>Do you have any experience with PWB assemblies with BGAs on both sides of the
>board? What about BGAs that are back to back? Do I need to use any type of
>SMT adhesive to hold in place BGAs during second side reflow? or the molten
>solder's surface tension is enough to hold the BGAs on the back side during
>reflow?
>Thanks in advance
>Gino Cochella
>Process/Manufacturing Engineer
>(310) 814-3955
>
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