Electronics Forum | Fri Jul 23 10:08:31 EDT 2004 | B. Hunter
We received bare PCB's that were supposed to have been finished with immersion silver because of BGA locations. The boards were finished in ENIG. We are concerned over any reliabilty problems that might occur as a result of using ENIG at BGA locati
Electronics Forum | Wed Apr 06 13:43:14 EDT 2011 | mosborne1
ENIG is the way you need to go. With ENIG you deposit a lot less gold. Too much gold will cause soler problems. Matt www.americancircuits.com
Electronics Forum | Wed Apr 06 12:21:14 EDT 2011 | ripper
Hi, I am process engineer in PCBA factory.I have a question about gold plating on BGA.I want to know difference soldering performance between gold plating electrolytic and ENIG.Many thank for any idea.
Electronics Forum | Sat Jul 26 11:40:09 EDT 2003 | mantis
All, Is it possible and reliable to replace bga's on Enig boards with out suffering from mass fallout due to blackpad defect.I have a couple of boards requiring bga replacment but i have been told that it is not possible to replace them reliable that
Electronics Forum | Mon Jul 26 09:19:57 EDT 2004 | davef
Both imm silver and ENIG provide flat surfaces that are better for fine pitch placement and reflow than HASL. We know of nothing that makes BGA locations different than other locations when using ENIG solderability protection. More broadly, the pri
Electronics Forum | Tue May 08 16:06:51 EDT 2001 | caldon
www.empf.org empfasis news letter March 2001 issue "Manufacturing with BGA's" Reading this while impersonating Elvis will generate best results. Caldon W. Driscoll ACI USA 610-362-1200 cdriscoll@aciusa.org
Electronics Forum | Mon Jul 28 16:32:45 EDT 2003 | itempea
Mant, we are reliably replacing BGAs of all sizes and pitches on ENIG. The black pad is not something created through rework, but a defect that the PCB has from the very beginning. Ioan
Electronics Forum | Tue May 08 18:42:05 EDT 2001 | mparker
Carol Doda?!!! She retired from the Condor club about 15 years ago. As for reference to all the other Plastics Princesses - God bless 'em all!!! 'Tis the time of year for halter tops and shorts - ye haw!
Electronics Forum | Wed May 09 10:42:24 EDT 2001 | davef
Retired!!!! Well, that certainly explains why I keep getting my Christamas cards returned, unopened!!!!
Electronics Forum | Mon Aug 11 13:55:09 EDT 2008 | guhansub1
Your defect may be possibly due to black pads, although it is rare on component side. Is your BGA pad finish ENIG? If so, inspection using a SEM can give clues on the presence of black pads
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