Victor, I send the paper to you. TN strips attachments. Kevin Glidden Manufacturing Engineer Astronics Luminescent Systems Inc. -----Original Message----- From: [log in to unmask] [mailto:[log in to unmask]] Sent: Thursday, April 22, 2010 10:24 AM To: [log in to unmask]; Glidden, Kevin Cc: [log in to unmask] Subject: RE: [TN] Flux-Cored Wire Solder: Halide / Halide-Free Mike, Can you share this document? Victor, -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Glidden, Kevin Sent: Thursday, April 22, 2010 9:07 AM To: [log in to unmask] Subject: Re: [TN] Flux-Cored Wire Solder: Halide / Halide-Free Mike, Thanks for weighing in - never too late to learn more. Your response is 100% inline with what information I've already been able to locate. Interestingly, some of the most useful info I've found about terms "halogen" and "halide" and "halide-free" is a 2009 APEX paper "Challenges of Implementing a Halogen-Free PCB Assembly Process", authored by none other than Tim Jensen and Ron Lasky, both of Indium. Kudos, Indium Corp. Kevin Glidden Manufacturing Engineer Astronics Luminescent Systems Inc. -----Original Message----- From: Mike Fenner [mailto:[log in to unmask]] Sent: Thursday, April 22, 2010 8:14 AM To: 'TechNet E-Mail Forum'; Glidden, Kevin Subject: RE: [TN] Flux-Cored Wire Solder: Halide / Halide-Free My late 2 cents Overall the industry is moving to halide free materials, but the prime driver is environmental compliance not reliability. One day soon then this will be an obsolete area, but for now: This is possibly a more contentious area than it needs to be, but is certainly confusing. Terms like "Halide free", "halogen free", "no free halides" and so on are bandied around as if they are interchangeable when they are not. It is useful to know these formulation details (REL0, ROl1 etc) to help make an informed judgement when selecting materials, especially if subsequent processes like cleaning coating are to be done. However within the L0/L1 no clean classification, the primary determinants as to whether the residues are safe are SIR and electro-migration. There is no distinction between halide and halide free. So turning to the questions: Can you get halide free solder wire now? Yes of course. Do you really need it, see above. Do flux /solder manufacturers make compatible product packages, yes. But to test all possible combos even within a single manufacturer's range would be a huge task, mixing in those from other suppliers impossible. Regards Mike Fenner Indium Corporation Europe -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Glidden, Kevin Sent: Monday, April 19, 2010 4:18 PM To: [log in to unmask] Subject: [TN] Flux-Cored Wire Solder: Halide / Halide-Free Greetings, I've recently been looking into changing out some solder materials. I was forced to change solder pastes due to product obsolescence. I am now in the process of verifying compatibility of the hand soldering fluxes and solders with the new paste. My current paste is halide-free. My current flux cored wire solder is not. I asked a supplier about halide-free flux-cored wire solder and the basic response is that you can get it, but it's really non-standard, so it's a lot more expensive with larger min-buys. Indeed, after I looked at a few websites about product offerings, it appears most flux-cored wire solders are not halide-free. I understand that I can basically use any materials I like as long as I test it out and can prove my "recipe" is safe to the overall product reliability, but seemingly halide-free is a safer way to in general. So I am wondering: 1) Am I worrying about nothing (matching halide-free paste with halide free solder wires)? 2) Is it really not all that common to use halide-free flux-cored wire solders? As always, thank you in advance... Kevin Glidden ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. 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