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October 2009

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Subject:
From:
Steve Gregory <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Steve Gregory <[log in to unmask]>
Date:
Mon, 26 Oct 2009 15:10:49 -0400
Content-Type:
text/plain
Parts/Attachments:
text/plain (98 lines)
Hi Linda,

I have the pictures posted. Here are the links:

http://stevezeva.homestead.com/crx_pre-sample_2.JPG


http://stevezeva.homestead.com/val10crx_overview.JPG


http://stevezeva.homestead.com/crz_pre-sample_2.JPG


http://stevezeva.homestead.com/val10crz_overview.JPG


http://stevezeva.homestead.com/crx_sample_2-x150.JPG


http://stevezeva.homestead.com/Stella_pic1.JPG


http://stevezeva.homestead.com/Stella_pic2.JPG

As far as measuring warpage during reflow, I found this:

http://www.malcomtech.com/Electronics/products_srs2.html



Never used one, never seen one used, so I can't vouch for it. But it does
look like a fun toy!

Steve

-----Original Message-----
From: Linda Langley [mailto:[log in to unmask]] 
Sent: Monday, October 26, 2009 7:23 AM
To: Steve Gregory
Subject: RE: [TN] Steve Gregory

Steve,
We hope to get some information for Stella.



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 coplanarity
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 coplanarity
during reflow cycle. Is anybody aware of such as test?
Thank you

Stella Neyman

-----Original Message-----
From: Steve Gregory [mailto:[log in to unmask]] 
Sent: Monday, October 26, 2009 6:52 AM
To: Linda Langley
Subject: RE: [TN] Steve Gregory

Hi Linda,

Sure, send them my way...

Steve

-----Original Message-----
From: Linda Langley [mailto:[log in to unmask]] 
Sent: Monday, October 26, 2009 6:05 AM
To: [log in to unmask]
Subject: RE: [TN] Steve Gregory

Steve,
Will you be able to post my pictures?

Linda Langley CIT
Training Specialist
Jabil Circuit
248-292-6176

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