Electronics Forum | Fri Oct 14 16:51:46 EDT 2005 | GS
It stands for Elettroless Nikel Immersion Gold, a kind of PCB finishing Entek (there are several kinds) is a brand name of an OSP (Organic Solderability Preservative)kind of PCB finishing. Regards............GS
Electronics Forum | Mon Jan 03 12:26:16 EST 2005 | barryg
We are looking at potentially doing a pcb that is enig finished as called out on its fab. drawing. We plan on a standard 63/37 water soluble paste. Is there any pro's and cons to this process with a pcb plated as such. What is the main advantage that
Electronics Forum | Tue Jan 04 12:37:41 EST 2005 | Cmiller
We have been using this finish almost exclusively for fine pitch boards for about 5 years. Make SURE you use a board house that does the gold plating in-house. There are some potential issues as DaveF stated. The only problem we have encountered is w
Electronics Forum | Fri Apr 21 09:03:59 EDT 2006 | choppy
I guess the first thing to look at is the temperature. We had to heat more for QFP256 on sample boards and we saw discoloration on some small parts. Just try to sense around when profiling to see what's there.
Electronics Forum | Thu Apr 20 22:14:51 EDT 2006 | raquel
hello! need ur inputs... if the Matte Sn pbfree finish of the component discolors AFTER having been exposed to bake, or, after reflow, will the base leadframe have any potential contribution to it? i know most likely suspects would be the plating pro
Electronics Forum | Thu Oct 07 15:50:57 EDT 2010 | boardhouse
Craig & Rem - I would also recomend switching to ENig - OSP would be my sencond choise ENig will give you the flatness your looking for plus the best shelf life. Enig is about 5% more than Hot Air. Enig also does not cause as much stress on the c
Electronics Forum | Thu Sep 30 16:16:14 EDT 2010 | vetteboy86
Were doing double sided, and I'm told our PCB finish is tin silver. From a quick search I'm finding that for double sided assemblies we would be better off using ENIG.
Electronics Forum | Thu Sep 30 16:54:33 EDT 2010 | 18424
Enig have been one of the industries leading finishes with great solderabilty and shelf life, And now Immersion Silver is starting to get popular.
Electronics Forum | Wed Jan 19 19:14:12 EST 2022 | charliedci
Looking for opinions on pic attached of ENIG finish. appears to be over-etched gold, but I am not trained up on PCB fabrication.
Electronics Forum | Thu Jan 20 21:29:48 EST 2022 | stephendo
Copper gets etched in a photographic manner. ENIG is an additive process. Nickel gets added then gold gets added on top. Therefore it is not a matter of over etching. It is a matter of not enough gold added. The layer of gold ideally is as thin as po
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