Electronics Forum: what and is and cob and test (Page 1 of 1)

what is the different between ENIG and Immersion Au

Electronics Forum | Thu Jan 12 10:05:13 EST 2006 | davef

There's a lots comparisons like this on the web. Here's one: Westwood Associates said on 8/12/2003: ||HASL||OSP||ENIG||Pd||Tin||Silver Flat||no||yes||yes||yes||yes||yes Solderjoint||Cu-Sn||Cu-Sn||Ni-Sn||Ni-Sn||Cu-Sn||Cu-Sn Contact||E-test, ICT||no|

COB and Plating

Electronics Forum | Tue Oct 07 12:35:10 EDT 2008 | andy_pal

Hi All, I am using COB on my DOUBLE SIDED PCB. lastly we used Eletrolytic Ni / Flash Gold Plating. Our Boards vias Failed the UL corrosion Test. we did some cross-section analysis and found 10.75 �m of Nickel and 0.022 um of Gold and as the Process

What is gonna impact boards without silkscreen on quality and mf

Electronics Forum | Thu Aug 16 22:12:41 EDT 2007 | davef

There is limited benefit to silk screen legends. They cost ~$45 a side per batch. There is benefit to some board users in having reference designator and orientation markings as an aid in test and repair actions. There is no reason these markings

What is gonna impact boards without silkscreen on quality and mf

Electronics Forum | Fri Aug 17 10:50:15 EDT 2007 | Frank

I agree that the documentation should be used and not necessarily the silk screen. The silk screens can be a first line of defense, but nothing beats the proper documentation. Years ago I visited a contract manufacturer that a friend was working at


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