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March 2010

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Subject:
From:
Julien Meyer <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Julien Meyer <[log in to unmask]>
Date:
Wed, 31 Mar 2010 11:41:08 -0300
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Thanks Karen, in the event of using an ORL0 flux combined with a ROL0 flux-cored solder, would you recommend cleaning?

Julien Meyer
Quality Assurance
Cobham Surveillance
T:+1 902 468 3007 ext. 3144
F:+1 902 798 8188

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-----Original Message-----
From: Karen Tellefsen [mailto:[log in to unmask]] 
Sent: March 31, 2010 11:33 AM
To: TechNet E-Mail Forum; Julien Meyer
Subject: Re: [TN] What exactly is Organic Flux?

Organic fluxes are made without synthetic pesticides and fertilizers.

Seriously.  OR fluxes contain organic acid activators.  Some contain a
little bit of rosin, but there is more organic acid than rosin.  Some RO
fluxes contain organic acid, but there is more rosin than organic acid.
Different organic acids are used in fluxes; citric acid is very corrosive
at ambient conditions and must be cleaned off, and adipic acid is rather
benign as is often used in the most reliable low solids fluxes suitable for
most no-clean assembly.  The mildest ORL0 liquid fluxes are often used for
touch up with ROL0 or ROL1 core-fluxed solder wire.

Ask your supplier for material combination SIR and ECM data.

Karen Tellefsen - Electrical Testing
[log in to unmask]
908-791-3069



                                                                           
             Julien Meyer                                                  
             <julien.meyer@COB                                             
             HAM.COM>                                                   To 
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                                                                   Subject 
             03/31/2010 08:36          [TN] What exactly is Organic Flux?  
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              TechNet E-Mail                                               
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               Julien Meyer                                                
             <julien.meyer@COB                                             
                 HAM.COM>                                                  
                                                                           
                                                                           




Hello all, I've been able to find quite a bit of information on Rosin and
Resin type fluxes but not much on Organic fluxes. Can anyone tell me what
Organic flux is made up of and how it may differ - particularly in the
areas of board reliability - from Rosin flux?
Further, I understand that it is not advisable to use two different types
of fluxes in one operation as their different chemistries may be
incompatible, yet we've been suggested the use of an ORL0 flux along with a
ROL0 flux-cored solder.  Do Organic and Rosin fluxes share any
similarities?

Thanks in advance,

Julien Meyer
Quality Assurance
Cobham Surveillance
T:+1 902 468 3007 ext. 3144
F:+1 902 798 8188
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Cobham Tracking & Locating Ltd. doing business as Cobham Surveillance, 120
Eileen Stubbs Avenue, Suite 200, Dartmouth, NS B3B 1Y1, Canada.
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