Jurgen,
Ever hear of the Ersa Scope?  Phone Bob Klenke at ERSA 262-375-6844 or
[log in to unmask]   Hopefully this contact info is still current.

regards,
Bev Christian
Director of Electronics Manufacturing
XLTEK

-----Original Message-----
From: Jurgen Kruger [mailto:[log in to unmask]]
Sent: Friday, June 02, 2000 11:22 AM
To: [log in to unmask]
Subject: [TN] Other visual tests under a BGA possible?


Dear Members!

With interest I follow your discussion about X-ray testing of BGAs. I would
like to know, are there any other visual tests possible, to look under a
soldered BGA? For example, with a very tiny camera using a
glass-fibre-cable, say 0,5mm diameter? Is something like this in use? Or
makeable? Would need a very tiny optical system? I got the impression, to
solder BGAs reliable is a very delicate thing, isn't it?

Sorry for my stupid statements, but I haven't any experience in BGAs nor
testing of PCBs.
Jurgen.

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