Electronics Forum | Wed Nov 02 11:14:45 EST 2005 | Doug
I am doing lead free testing on a Vitronics selective machine with a 4 mm nozzle. The finishes I am testing are ENIG, ImSn, and ImAg. The problem I am encountering is achieving good top side wetting. Has anyone had any luck with this type of an ap
Electronics Forum | Tue Dec 12 01:52:05 EST 2006 | hemu_me
As we have vitronics oven(SMR610A) made in dec,1997,which has 5 heating zones and 2 cooling zones. For Lead free soldering what should be our baseline for low/medium boards.we have gathered profiles from various paste manufacturers,however we don't k
Electronics Forum | Fri Jul 27 10:07:18 EDT 2007 | rgduval
Our preference has been ENIG. We find that we achieve higher quality (visually) soldering for through hole and surface mount parts, with less handling issues than when we use white-tin, or immersion tin. We are about to do a test on some boards tha
Electronics Forum | Thu Nov 30 22:47:54 EST 2000 | CAL
Contact Lee Whiteman @ ACI/empf. Lee is an industry expert in Leadfree soldering. He has also ran an IPC leadfree work shop involving a DOE on Leadfree Screen Printing. Lee can be reached at lwhiteman@aci-corp.org or 610-362-1200. Best regards, Cal
Electronics Forum | Tue May 31 22:55:08 EDT 2005 | davef
We think it will make little difference to your customer. It really depends on your customer's end-use environment though. Tough to guess. In a short time, both of pots will be "SAC" though.
Electronics Forum | Wed Nov 02 12:08:40 EST 2005 | chunks
It could be lack of preheat or flux. You can verify the flux by hand applying. I'll bet it's lack of preheat though. That's usually the case with selective solder.
Electronics Forum | Mon Jul 30 10:17:26 EDT 2007 | davef
immersion ...easily changes color.. See that's the GREAT thing about immersion coatings. If they change color, they probably will not solder well. Try that with other coatings.
Electronics Forum | Thu Jan 29 20:57:06 EST 2009 | padawanlinuxero
HI!!! its a ERSA Reflow Oven HotFLOW 7 and I really appreciate some help thanks
Electronics Forum | Thu Jan 29 15:06:42 EST 2009 | padawanlinuxero
http://www.flickr.com/photos/94427924@N00/3236723528/ and 94427924@N00/3235878901/" target="_blank">http://www.flickr.com/photos/94427924@N00/3235878901/ do you guys think these is a finish problem ?
Electronics Forum | Thu Jan 29 16:48:49 EST 2009 | slthomas
Looks like a time/temperature problem to me. However, there are a lot of solder fines surrounding the pads in one photo that go beyond what I'd expect from inadequate TAL. Is it possible that the board was misprinted and not completely cleaned, or