Thank you VERY VERY much for your quick and on-topic, informative
responses. Steve, Ed, George, John and Dave; I am in debt and in awe. Your
responses were exactly what I was looking for.

By the way, I really truly composed this about a  week ago, then jumped to
something and it stayed in draft until now. That's how I roll lately.

Best Regards,
Chris
-------------------------------------------------
   Chris Ball  (248)619-8430
   Valeo - *G*roup *E*lectronics *E*xpertise and *D*evelopment *S*ervices
(GEEDS)
   150 Stephenson Highway
   Troy,MI 48083

On Tue, May 17, 2016 at 5:25 PM, David Hillman <
[log in to unmask]> wrote:

> Hi Chris - some more info to add to the good comments you have already
> received. If you do a paper search, you will find that Craig Hamilton from
> Celestica, and Dr. Chris Hunt, NPL, both did some very good work on copper
> dissolution that you may find helpful. Jeff Kennedy, Ross Wilcoxon and I
> published copper dissolution work for SAC305 and SN100C at the SMTA ICSR
> conference (either 2012 or 2013) that we conducted as part of the NASA DoD
> Lead-free Solder Project consortia work. Figure 12 has a copper thickness
> versus wave solder processing time graph that might be useful. Good Luck.
>
> Dave Hillman
> Rockwell Collins
> [log in to unmask]
>
>
> On Mon, May 16, 2016 at 4:50 PM, Chris BALL <[log in to unmask]> wrote:
>
>> Hello Gurus,
>>
>> Not sure who to ask or how best to ask it, but here goes:
>>
>> We've seen what appears to be a large % of the plating in hole barrel and
>> board surface vanish during a wave solder operation. I can find some info
>> about what is acceptable loss levels on component terminations but haven't
>> found similar for the board itself.
>>
>> Need to find IPC references/recommendations for MAX copper leaching for
>> solder source side of lands on the board and in hole barrels.
>>
>> Feeling old, tired, and thickheaded. Any help will be appreciated.
>>
>> Best Regards,
>> Chris
>> -------------------------------------------------
>>    Chris Ball  (248)619-8430
>>    Valeo - *G*roup *E*lectronics *E*xpertise and *D*evelopment *S*ervices
>> (GEEDS)
>>    150 Stephenson Highway
>>    Troy,MI 48083
>>
>>
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