Electronics Forum | Fri Dec 08 21:23:16 EST 2006 | Harsha
I am seeing a problem of flux droping on the PCBA during reflow. This is a pb free process and I am using KOKI pb free paste with 8 zone (and some 9 zone) reflow ovens. Line throughput is about 10,000 boards/24 hours. I suspect that the exhaust is no
Electronics Forum | Tue Feb 27 13:43:42 EST 2007 | wavemasterlarry
Thanks Russ. Everyone knows that when you clean your wave you wear a dust mask. Well that tells ya the lead is flying around. So same goes fr your oven. Hot solder paste turns into the lead. And like a wave it is very hot. Hot stuff vaporizes l
Electronics Forum | Sat Feb 12 05:37:38 EST 2005 | mattkehoe
Lead free samples are available at http://www.sipad.com/SIPADLeadFree1.htm No stencil needed, the boards are pre-loaded with paste in a solid form and adhesive flux. Check it out. Matt Kehoe
Electronics Forum | Sat May 17 09:12:50 EDT 2008 | davef
Lead-free means expensive tin. Tin is an excellent solvent. So, metal parts in contact with molten tin must be expensive enough to resist that nature of tin. To learn more about this: * Search the fine SMTnet Archives * Look here: "Liquid Tin Corrosi
Electronics Forum | Tue Dec 19 13:09:36 EST 2006 | billwestiet
Where are you located. I know a guy that has experience on the Folung oven, and can hook you up with him. Drop me an E, and I'll reply to that with his contact information. Bill West bill@ietechnology.net www.ietechnology.net
Electronics Forum | Wed Sep 19 10:38:58 EDT 2012 | mark25y2001
It's both solderpaste or PCB pad problem... 1st it's possible that your PCB exposure problem or old stocks, remedy? try to bake your PWB. 2nd, it's possible that PWB coating (wax) are more ticked so that solder paste flux are cannot penetrate to clea
Electronics Forum | Fri Dec 15 05:02:22 EST 2006 | Harsha
Thanks for the response. I am using mainly two brands of ovens. One is Heller and the other is a chinese brand called Fulongwin (copy of Vitronics). I see the problem in both, more severe in the Fulongwin. Both are 8 zones and a few 9 zone Hellers. I
Electronics Forum | Sun Sep 23 18:59:59 EDT 2007 | darby
I presume you are looking at low melting point solders. Firstly, I would consider running BOTH sides with the same paste - this will cut down the opportunities for a mix up with rework or retro-fit. Secondly, check that there is a cored wire availabl
Electronics Forum | Mon Jul 16 09:53:36 EDT 2007 | ed_faranda
Yes, you can use lead-free parts in a leaded process. And the other is true as well, no-lead free parts in a leaded process. BUT, you should not use leaded parts through a non-lead wave solder process and of course, your board will not be RoSH.
Electronics Forum | Thu May 15 21:52:33 EDT 2008 | deni
Can anyone tell me what makes the wave solder machine lead free? I I am looking to buy a used machine "electrovert minipak 300" and they are claiming that they can convert the machine into lead free. I want to know what does involve to do this kind o
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