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| Reply To: | TechNet E-Mail Forum. |
| Date: | Wed, 12 Feb 2003 13:59:49 -0600 |
| Content-Type: | multipart/mixed |
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To change a SM part to a through hole part and then change the lead configuration and glue the little guy down. What a pain in the a&^!! Whoever thinks this is a cost effective method of fixing the parts should do the first 50 - 100 boards and then ask if it is still such a good idea. I think you will by far have more problems doing this than taking the parts back and replacing them with identical parts.
Why the change of part at all? If the problem isn't the part then why change the part? It sounds like you need to make the existing product functional and that's gonna take rework no matter what you do. For future builds once you figure out what is causing the flexure cracks then you shouldn't have this issue. You could be flexing during depaneling, thermal shocking the part, or excessive pressure at P&P.
Kathy
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<DIV><FONT size=1>To change a SM part to a through hole part and then change the
lead configuration and glue the little guy down. What a pain in the
a&^!! Whoever thinks this is a cost effective method of fixing the
parts should do the first 50 - 100 boards and then ask if it is still such a
good idea. I think you will by far have more problems doing this than
taking the parts back and replacing them with identical parts.</FONT></DIV>
<DIV><FONT size=1></FONT> </DIV>
<DIV><FONT size=1>Why the change of part at all? If the problem isn't the
part then why change the part? It sounds like you need to make the
existing product functional and that's gonna take rework no matter what you
do. For future builds once you figure out what is causing the flexure
cracks then you shouldn't have this issue. You could be flexing during
depaneling, thermal shocking the part, or excessive pressure at
P&P. </FONT></DIV>
<DIV><FONT size=1></FONT> </DIV>
<DIV><FONT size=1>Kathy </FONT></DIV>
<DIV><FONT size=1></FONT> </DIV></BODY></HTML>
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information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
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