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November 2002

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"TechNet E-Mail Forum." <[log in to unmask]>, "Bissonnette, Jean-Francois" <[log in to unmask]>
Date:
Tue, 12 Nov 2002 09:23:29 -0600
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"TechNet E-Mail Forum." <[log in to unmask]>, Don Vischulis <[log in to unmask]>
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From:
Don Vischulis <[log in to unmask]>
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Jean-Francois,

Yes, it sounds like flux residue.  However, this is an opinion.  To be
certain, the residues should be analyzed.  There are several organizations
with the capability to perform the analysis.  Reliability and the effects of
leaving the residue in place or the effects of removal processes are another
issue beyond the scope of this response.

Don Vischulis

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Bissonnette,
Jean-Francois
Sent: Tuesday, November 12, 2002 8:58 AM
To: [log in to unmask]
Subject: [TN] Flux emtrapment?


I have spoted white residues under header Socket strips.  It looks like
some kind of crust and some times the residues observed looked like
yellow translucent crystals.

Can this be entraped flux?  I beleive so, but need to have opinion from
experts to conform.

Thanks in advance.

Jean-François Bissonnette
Vérificateur, Contrôle de la Qualité
Électronique
Produits et Procédés
Vapor Rail Inc.
10655 Henri-Bourassa O.
St-Laurent, Qc
H4S 1A1

(514) 335-4200 x2021
(514) 335-4231 fax




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