Gregg,
What were the failures? I'm interested because I see LGA usage picking up
steam here.
Ken



-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Temkin, Gregg
Sent: Thursday, April 16, 2009 9:22 AM
To: [log in to unmask]
Subject: Re: [TN] LGAs in a military environment?

We just designed out similar LGAs made by Linear when a reliability analysis
showed VERY EARLY failures probabilities for our typical operation cycle
over a 20 year life.

You can certainly get them soldered and have them pass a screen but that may
not be the whole picture.  Depends on your operating environment/life
requirements.  Suggest having someone who is good at analysis run the
numbers.

Gregg

-----Original Message-----
From: Graham Collins [mailto:[log in to unmask]] 
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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