Steve,
I need to clean boards that were poorly bonded, trying to remove the adhesive residue so that they be bonded again.
Thanks,
Ioan Tempea, ing.
Ingénieur Principal de Fabrication / Senior Manufacturing Engineer
T | 450.967.7100 ext.244
E | [log in to unmask]
W | www.digico.cc
N'imprimer que si nécessaire - Print only if you must
-----Message d'origine-----
De : Steven Creswick [mailto:[log in to unmask]]
Envoyé : November-29-10 2:29 PM
À : 'TechNet E-Mail Forum'; Ioan Tempea
Objet : RE: [TN] Cleaning of ACF bonder
Ioan,
I am confused.
Are you attempting to clean the ACF bond head, or the substrate, or both?
Steve Creswick
http://www.linkedin.com/in/stevencreswick
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Ioan Tempea
Sent: Monday, November 29, 2010 1:32 PM
To: [log in to unmask]
Subject: [TN] Cleaning of ACF bonder
Dear Technos,
We need to clean the ACF bonder from a fair quantity of boards (about 1K/
month). The material to clean is Hitachi Anisolm, per the specification
below (unfortunately there's not much in this spec)
http://lituo.testmart.cn/Images/UpLoadForderElse/2009_12_30_13_38_38_4939.pd
f
<http://lituo.testmart.cn/Images/UpLoadForderElse/2009_12_30_13_38_38_4939.p
df>
We have been suggested to use a 48 hour soak in 1-Methyl-2-Pyrrolidinone,
followed by an acetone cleaning. It is only the bonding contacts that are
immersed in the methyl-pyrr..., but the level of substance is only 2 mm away
from an overmolded die-attach. The acetone cleaning is local on the
contacts.
First question would be: are the above chemicals OK for this usage? Board is
FR4, with gold-plated contacts.
Second question would be: what else could we use to remove the bonder?
Manufacturer seems to recommend Dow Corning OS-20, but we were told by our
customers it does not exactly work.
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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