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Subject:	Re: Bent BGA
From:	David Douthit <[log in to unmask]>
Reply To:	TechNet E-Mail Forum.
Date:	Tue, 15 Apr 2003 05:34:48 -0700
Content-Type:	text/plain
Parts/Attachments:	text/plain (48 lines)

Ofer,

More than likely it's a storage problem. A combination of temperature and humidity changes
can distort plastic. This will be amplified if the components are stored "loose" ( not in seperate containers).

David A. Douthit
Manager
LoCan LLC

Ofer Cohen wrote:

> Good morning (strange to write it to global forum, but this is the hour
> here), technetters,
>
> I received a batch of bent component (BGA, plastic basis and metal cover).
> While placing it ion a test table the co-planarity error for this 32 mm
> component is 0.5 mm. Undoubtedly, can't be placed. Although we earned it
> (age - 3 years, storage conditions - unknown because procured from a
> jobber), I want to learn the possible cause for such a strange phenomena.
> Does anyone have an idea how it can happen?
>
> Regards
> Ofer Cohen
> Quality Assurance Manager
> Seabridge Ltd.
>
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