From the point of view of an EMS only. Some OEMs might be working to
maximize quality, not meet arbitrary specs.
yves
Yves Dupuis
Process Engineering
Leitch Technology
> -----Original Message-----
> From: Jack Crawford [SMTP:[log in to unmask]]
> Sent: Monday, May 14, 2001 1:34 PM
> To: [log in to unmask]
> Subject: Re: [TN] Inspection
>
> As I read this msg again, it is my understanding that the single question
> is whether or not component identification markings have to be visible.
> It's a black & white issue; neither IPC/EIA J-STD-001C nor IPC-A-610C, the
> two most popular industry consensus standards, require markings to be
> visible. If your contract requires acceptance to either of these
> documents, without other documentation requiring visible markings there is
> no substantiation to reject. All other discussion is philosophical. Jack
>
> "TechNet E-Mail Forum." <[log in to unmask]>,
> "PERALTA, Kevin (BREA)" <[log in to unmask]> wrote:
> >
> > We have a situation at our facility in which I feel two inspectors are
> > correct from two perspectives. I would like to ask members to submit
> > situations and, or fixes to the following:
> >
> > IPC-A-610 does not mention acceptance criteria for component location &
> > identification for components that are too small to identify (e.g.;
> SMT).
> > One inspector does not want to accept something by faith, and there's no
> > callout for the ID of a component on an electronic assembly that is too
> > small to identify on our blueprint. He would like to reject them, and
> let
> > MRB disposition the rejection, which I feel is correct.
> >
> > Our other inspector will still accept the assembly on the basis that
> testing
> > will confirm if the component is the correct or incorrect one.
> >
> > From a production supervisor's perspective, the latter is preferred.
> But,
> > from a Quality perspective, the former process should be followed. There
> is
> > no mapped out process for this situation. I actually had an engineer
> tell
> > one of our inspectors, "that if it was the wrong component, it would not
> fit
> > in it's place on the assembly" (I think we shipped him off to Alaska)!
> >
> > I'd appreciate any response sent to me, and would invite any questions
> > concerning such situations. Thank you!
> >
> >
> > Kevin L. Peralta
> > Class "A" Instructor
> > Senior Quality Systems Analyst
> > TRW Aeronautical/Lucas Aerospace
> >
>
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