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December 1999

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Subject:
From:
Hinners Hans Civ WRALC/LYPME <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Thu, 9 Dec 1999 22:14:03 -0000
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Hi Jean-Francois,

I'm not as familiar with IPC A-610 as I'm gonna be in the very near future
but . . . two other sources you might consider in deciding whether to fail
or pass a conformal coating would be the original Master Design Package
(what the customer is paying you to build).  Ultimately somebody in
management can decide to ASK the customer what coating would be acceptable.
Very rarely we will get the customer to sign a waiver for a couple boards if
they are on that pass/fail edge.  These are usually the customers that are
very satisfied with out work.  Otherwise don't sweat it - fail them
yourself, have Production build more or try a rework in Assembly.

Good luck with the new gig.

Hans

~~~~~~~~
Hans M. Hinners
Materials (& Process!) Engineer
Warner Robins - Air Logistics Center/Avionics Production Division
Manufacturing Branch (LYPME)
380 Second Street, Suite 104    (Building 640)
Robins AFB, GA  31098-1638
912-926-1970 (Voice) 468 - 1970 (DSN)  912-926-7164 (Fax)
[log in to unmask]


> -----Original Message-----
> From: Jean-Francois Bissonnette [SMTP:[log in to unmask]]
> Sent: Thursday, December 09, 1999 08:06
> To:   [log in to unmask]
> Subject:      [TN] Conformal coating thickness
>
> Hello again!
>
> In IPC-A-610, they specify a 0.05mm thickness for silicon coatings. they
> dont say if it is nonconforming defect if it is not respected.  Can a
> board
> be rejected if the thickness is not as required?
>
> Thank You!
>
> JF
>

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