Linda,

You might be able to get what you need from

http://www.akrometrix.com/

They've measured some of our boards for bow and twist while undergoing our reflow profile.

Hope this helps.

Leland

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Linda Langley
Sent: Tuesday, October 13, 2009 10:02 AM
To: [log in to unmask]
Subject: [TN] Lifted Leads

Linda

I know that you are signed on TechNet

Could you please post question to all experts for me:

We are reflowing 50pins CF card SMT connector and having high rate of the lifted leads (they are gull wings leads). We measured leads co planarity using CMM before reflow and it seems that all leads are meeting the spec. 

My guess is that the component body is bowing during reflow process (we are dong Pb free reflow with the peak of 234°C) causing lifted leads.

Somebody told me that there is a lab who can measure leads co planarity during reflow cycle. Is anybody aware of such as test?

Thank you

 

Can anyone share some information, any help will be greatly appreciated.

 

 

Linda Langley CIT

Training Specialist

Jabil Circuit

248-292-6176


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