I have received these awful circuit boards from a vendor that show lots of solder mask mis-registration and flaws. We used a bunch of them before we found the problem. Now we need to implement some incoming inspection. I am working on a checklist of things to check, so far it has 1 item "check solder mask registration". What else would I look for?
Also considering using a lab to do this on a sample basis, does anyone have any suggestions where?
thanks,
Jeff_M
In the distant past when I had to do such things myself, I used an IPC publication, IPC-A-610
I am not sure if you have to buy this standard [probably], but it's a standard, so if your boards were required to be made to IPC-A-610, then you'll have grounds for rejection.
Cheers
PeteS
Heck yeah you have to buy it, and top dollar too- for the most poorly written non-informational crap in print.
I wasn't referring to the apparent quality (or otherwise) of the standard, but it _can_ be useful.
Certainly it could do with some work.
If the OP is going to outsource the function to a lab they should be using a quantified approach anyway.
Cheers
PeteS
If this is the standard I'm thinking of there's a crap low res version you can download for free.
Hello Jeff,
Add via metallization checks to the list. I had some bad surprises there lately, something that really was never a problem in the past.
Oh, and check whether your vendor has recently outsourced some or all work. That could become a real problem.
-- Regards, Joerg http://www.analogconsultants.com
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