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Date: | Wed, 3 Feb 2010 16:52:34 -0500 |
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Hi Ioan,
What I know about laser soldering would not fit on the back of a postage
stamp but as far as the BGA and flex if the stiffener is FR-4 I suspect you
will have to underfill unless it is in a very benign environment - otherwise
use a metal stiffener.
Regards Steve Kelly
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Ioan Tempea
Sent: February-03-10 2:35 PM
To: [log in to unmask]
Subject: [TN] Laser soldering of BGA
Dear Technos,
Any insights on BGA laser soldering? It is for soldering a 15x15 mm BGA onto
a flex PCB. The flex is backed by a rigid substrate in the BGA zone, but due
to mechanical constraints this substrate cannot be thicker than 0.012".
Oh yes, lead-free.
Thanks,
Ioan Tempea, ing.
Ingénieur Principal de Fabrication / Senior Manufacturing Engineer
T | 450.967.7100 ext.244
E | [log in to unmask] <mailto:[log in to unmask]>
W | www.digico.cc <http://www.digico.cc/>
N'imprimer que si nécessaire - Print only if you must
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