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December 1997

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Subject:
Re: BGA Coplanarity
From:
"CSS International Corp." <[log in to unmask]>
Reply To:
TechNet Mail Forum.
Date:
Tue, 30 Dec 1997 20:30:19 +0000
Content-Type:
text/plain
Parts/Attachments:
text/plain (65 lines) 
Dennis:

Coplanarity requirement is 0.0006" for BGA.  However, most of the suppliers
would like the coplanarity specification to be 0.0008" and the users would
like it to be 0.0004".

This issue is still not resolved completely.

Best Regards,
One Kyu Son



At 06:03 PM 12/29/97 +0000, you wrote:
>I was wondering if there is an industry standard for coplanarity of
>solder spheres on a BGA package.  Any insight will be greatly
>appreciated.
>
>--
>Dennis Fall
>Development Engineer Assistant
>Thin Film Technology Corporation
>1980 Commerce Drive
>North Mankato, MN  56003-1702
>
>P:  507-625-8445 x17
>F:  507-625-3523
>email: [log in to unmask]
>http://www.thin-film.com
>
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CSS International Corp.
460 Bergen Boulevard, Suite 209
Palisades Park, NJ  07650  U.S.A.
Tel: 1-201-461-7205
Fax: 1-201-461-6374
E-mail: [log in to unmask]

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