Jim

An initial consideration is the fact that these two documents vary in scope.
J-STD-001B dealing with soldering and specifically in process requirements
while IPC-A-610B is Acceptability of Electronic Assemblies.  Soldering is a
chapter within IPC-A-610B, Chapter 4 specifically.  It is true that the two
documents are for the most part compatible given the correct revision
sequence.  

As far as the document use, J-STD-001 is the new kid on the block and
replaced the old 815 which didn't receive a great deal of following.
IPC-A-610, for maybe less than obvious reasons, received a great deal of
favor in the industry.  The not so obvious reasons are the lack of "how to",
"when" and mother may I.  As long as the product was acceptable it was OK
doky.  How that acceptability was achieved was up to the manufacturer.  It
was and still is used in the commercial product arena to describe
acceptability of product contractually without the process compliance issues
associated J-STD.  

J-STD-001B was developed to replace MIL-STD-2000 as such it certainly has a
greater following and participation in development by DoD suppliers.  The
quality of J-STD-001 is much improved from the 815 and eventually will
receive it's due regard especially with the family of J-STD documents.  

I have discussed the use of IPC-A-610 with numerous defense suppliers and
certainly in these days of COT there should be products that are so defined.
Unfortunately I have no list but hopefully some of them will respond to your
inquiry, probably off line so as not to get a tainted reputation.  

Mel Parrish
President, MTTC Inc.

On Friday 10 January 1997 Jim Marisco ([log in to unmask]) wrote:
"Has any military contractor adopted IPC-610 as their workmanship standard
(in lieu of J-STD-001) to call out on your drawings as a replacement for
MIL-STD-2000?  Does anyone think this would not be adequate (even if all
processes are documented in internal specs)?>Has any military contractor
adopted IPC-610 as their workmanship standard (in lieu of J-STD-001) to call
out on your drawings as a replacement for MIL-STD-2000?  Does anyone think
this would not be adequate (even if all processes are documented in internal
specs)?"

We can be reached at:            e-mail: [log in to unmask]
Manufacturing Technology Training Center (MTTC), Inc
543 Graaf Street                     Phone 619 446-5571 
Ridgecrest CA 93555              Fax  619 446-4337
Web Site: http://www1.ridgecrest.ca.us/~mttc/mttc.htm 
We sponsor The 21st Annual Electronics Manufacturing Seminar
 to be held 19-21 Feb 1997. Contact us for further information.

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