We request the lab report, and the physical microsection for all PCBs purchased. We don't request photos and none of our suppliers provide them. We routinely send the microsections out to a third party lab for inspection. I don't have a metallograph here to do my own analysis.  We get quite a good deal from the lab because of the volume of work we send them. 

I know of at least one PCB broker that sources out of a low-cost region and operates their own inspection lab there. They apparently do send a microsection photo and inspection report as part of their value add proposition. 

Best regards,
Raye Rivera
 
 
QA Manager · Canoga Perkins 

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Phil Bavaro
Sent: Tuesday, April 01, 2014 3:40 PM
To: [log in to unmask]
Subject: [TN] PWB Microsection Report - Photos

I have been trying to get my PWB Fabricators to include photographs of the cross sections that come in with our PWBs but have encountered resistance from some of them.  Some even say they cannot do this as they don't have the camera equipment. They always include a mount with a cert and spare coupons but no picture of what is already polished in the mount.

In my opinion, looking over a spreadsheet of check marked boxes for compliance to 6012 is important, but a picture of the mount(s) reveals more information.  And in my experience, when I go to a third party lab, I always get photos.


Am I asking for something that is not normally provided from a PWB Fabricator?

What do the rest of you do when it comes to inspection of microsection mounts?

Thanks in advance,

Phil
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