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November 1997

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Subject:
From:
"Dhawan, Ashok" <[log in to unmask]>
Reply To:
TechNet Mail Forum.
Date:
Thu, 6 Nov 1997 19:39:10 -0000
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text/plain (62 lines)
Can you clarify what is Vesication testing?
Sorry, i have not heard of this term.

ashok

> ----------
> From:         Max Bernhardt[SMTP:[log in to unmask]]
> Sent:         November 4, 1997 4:23 PM
> To:   [log in to unmask]
> Subject:      [TN] [AS] What parameters do other companies use when
> evaluating             the e             ffectiveness of Assembly
> houses builds
>
> Technet,
>
> We are in the process of qualifying a board assembly house to build
> some
> of our assemblies.  Since we have never gone to an outside house
> before,
> we are kind of flying blind.  Right now, we want to qualify a vendors
> process and have come up with a test plan.  The plan includes SIR
> testing, Ionic board contamination testing, Vesication testing and a
> thermal cycle of 10 excursions over the storage temperature of the
> board
> to test the solderability of the assembly.  Does anyone have any other
> tests or recommendations that they follow when qualifying outside
> assembly houses.  We build to an IPC class II with some exceptions.
> Any
> help would be appreciated.
>
> Max Bernhardt
> Woodward Governor Co.
> 970-962-7376
>
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