Having come from that organization (Lockheed Martin) I agree the
        visuals were quite good, but they were based on excerpts from
        the aforementioned Mil specs - some more stringent than
        necessary in commercial applications.

        The color visuals in the hard copy IPC docs are quite excellent
        and have the various class acceptability requirements listed.
        This is very informative when building for various Customer
        types (As we do in the company I work for).

        I agree when others says it is VERY time consuming and expensive
        to maintain your own specs.  There is almost nothing you
        couldn't find better documented in the IPC specs at any rate.

        Jan Pelchat
        Benchmark Electronics
        Hudson Division


______________________________ Reply Separator _________________________________
Subject: Re: [TN] Company's own Standards....necessary??
Author:  "Crepeau; Phil" <[log in to unmask]> at 0UTG0ING
Date:    8/6/98 9:44 AM


hi,

if they are still available, you might want to check out a set of visual
criteria that were available from what used to be martin marietta in
orlando, florida. (it's now lockheed martin).  i've found them to be
quite good.

phil

-----Original Message-----
From: Bev Christian [mailto:[log in to unmask]]
Sent: Thursday, August 06, 1998 9:34 AM
To: [log in to unmask]
Subject: Re: [TN] Company's own Standards....necessary??


Rudolph,
I would like to strongly discourage you from going down the road of
setting
up your own set of standards.  Writing standards and keeping them
current is
very time consuming and EXPENSIVE.  The IPC specs are becoming the
industry
specs for North America, at least, especially with the death of the US
Mil
specs, which our military electronics brothers used.  The only upside I
can
think of to having your own standards is that you can use them to record
deltas from IPC specs and cover things that IPC does not or does not yet
do
well.  Other than that there are no upsides to having your own
standards.
At least that's how I feel about it.

regards,
Bev Christian
Nortel
> ----------
> From:         Rudolph Yu[SMTP:[log in to unmask]]
> Sent:         Thursday, August 06, 1998 11:24 AM
> To:   [log in to unmask]
> Subject:      [TN] Company's own Standards....necessary??
>
> I want to know if it is necessary for an OEM company to set up its own
> workmanship standard and inspection
> criteria instead of following the industry standards, like IPC.
> Can anyone tell me what are some of the benefits of having its own
> guideline?
>
> I am also trying to find some online papers on  BGA inspection on
board
> level using X ray machine. If you
> came across one, please let me know where can I obtain a copy. Thanks
in
> advance.
>
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