Mike,
Head in pillow problems. And in this case we know it is not due to part
or board warpage - not at corners or in the middle, but random.
Obviously BGAs balls are being looked at too.
Bev
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Mike Fenner
Sent: Wednesday, May 09, 2007 12:15 PM
To: [log in to unmask]
Subject: Re: [TN] Measuring oxidation of the spheres in solder paste
Bev: Why not just ask your paste manufacturer?
Also I am curious why you need to know this?
Regards
Mike
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Bev Christian
Sent: Wednesday, May 09, 2007 5:03 PM
To: [log in to unmask]
Subject: [TN] Measuring oxidation of the spheres in solder paste
Technetters,
I would like to measure the oxidation of the solder spheres in solder
paste. I do not have an Auger or XPS. Now I know that ACI (EMPF) was
selling a device at one time that looked at solder paste quality on the
stencil. I am not referring to that equipment. I seem to recall there
was a Japanese piece of equipment that might have been something like a
SERA tester that claimed to be able to do this. I was wondering if
anyone on this forum had ever used it/checked it out? Or did it never
hit North American shores because of potential patent conflict with the
SERA tester? Any leads would be appreciated.
Regards,
Bev
RIM
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