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| Date: | Thu, 16 Apr 2009 10:11:51 -0700 |
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Graham,
We don't and we don't even recommend it for commercial apps...
BUT... AGAIN... It all depends ...
You might want to use it in a none-critical redundant secondary system...
But even then with care...
Apart from the issues already mentioned... The critical element that the solder joint is a surface adhesion only joint whose quality can not be determined without damage to the joint... Yes you can x-ray it or use acoustical microscopy to determine the voiding but this will not determine the joint strength just that you have maximized the joint surface area...
Paul
Paul Edwards
Surface Art Engineering
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Graham Collins
Sent: Thursday, April 16, 2009 3:32 AM
To: [log in to unmask]
Subject: [TN] LGAs in a military environment?
Hello Technet!
One of our designers is advocating using a LGA component in a military
product. Anyone out there doing it? I'm wondering (worried) about the
reliability since it has a very low standoff. And cleaning issues?
An example of the parts I'm referring to:
http://www.linear.com/designtools/packaging/lga/05081807_a_lga66.pdf
A Linear Technologies p/n LTM4604
regards,
Graham Collins
Halifax Production Engineering
(902) 873-2000 ext. 6215
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