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Subject:
From:
Ed Cosper <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Mon, 5 Jun 2000 09:34:05 -0400
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Alain,

Regarding your comments regarding the effectiveness of Receiving
inspections.  I noticed you referenced seeing a board burn in the past to
illustrate the importance of receiving inspection. I am curious as to what
standard test your receiving inspection performs on incoming products that
would have detected the potential of a board that would burn?


Ed Cosper

----- Original Message -----
From: "Alain Savard" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, June 05, 2000 8:44 AM
Subject: Re: [TN] PE: PCB Inspection


> Well may be the inspectors need a bit of training... Proper work is only
> done with either great luck (which is not reliable) or just plain old
> training. Besides "not every reject is a defect and not every defect is a
> reject". You have to review doubtful situations. Advise inspectors, in a
> written format, of any changes you want done to their inspection methods.
> Writing your own internal inspection documentation might not be a bad idea
> either.
>
> Alain Savard, B.Sc.
> Chemical Process Analyst
> CAE Electronics Ltd.
> e-mail: [log in to unmask]
>
> -----Original Message-----
> From: Howieson, Rick
> To: [log in to unmask]
> Subject: Re: [TN] PE: PCB Inspection
>
> Alain,
> Couldn't help but respond to your comment on toys vs hi-rel. We build
> space flight boards and very few (i.e. majority) of the receiving
> inspectors have a clue to what they are inspecting. You would be amazed
> of the 101 reasons I've seen to reject a board. Just a sample, "thermal
> pads called etching shorts". Nuff said.
> Rick
>
> >-----Original Message-----
> >To:    [log in to unmask]
> >Subject:       Re: [TN] PE: PCB Inspection
> >
> >Incoming inspection may be required in some instances... It all depends
on
> >the reliability you require for the boards. I don't think that most
company
> >dealing with high reliability products will dock-to-stock as eagerly as
> >throw-away manufacturer. It also depends on assembly value, sometimes
> >inspection may reduce headaches down the road. I've seen board burn in
the
> >past. These were supp0sed to be excellent board by the CoC... turned out
> >they weren't that good.
> >
> >All processes, no matter what have to make sense. Gather data if and when
> >possible. Keep your eyes open. I don't think that the people dealing with
> >cheap assemblies, like most toys, are playing in the same ball park as
> >people dealing high reliability medical or space equipment.
> >
> >Alain Savard, B.Sc.
> >Chemical Process Analyst
> >CAE Electronics Ltd.
> >e-mail: [log in to unmask]
>
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