Electronics Forum: enig rework (Page 1 of 4)

PCB Surface Finishing for good solderability & rework

Electronics Forum | Wed Jul 15 12:20:52 EDT 2015 | dyoungquist

If you are using lead solder (SnPb) HASL is a good choice. If you are using lead-free (RoHS compliant) solder then I would recommend Immersion Gold (ENIG).

PCB Surface Finishing for good solderability & rework

Electronics Forum | Sat Jul 18 00:23:41 EDT 2015 | davidkimi

ENIG finished is recommend. But the price is a little higher. For the PCB, I recommend Elecrow PCB service. You will see the PCB fabricated there is really cheap and the quality is really good.

PCB Surface Finishing for good solderability & rework

Electronics Forum | Wed Jul 15 17:36:26 EDT 2015 | mikekeens

From my experience Electroless Nickel Immersion Gold or ENIG finish gives the best results but does cost more than other available finishes. It has good solderabilty, good shelf life and is flat. Details of other available PCB surface finishes can

ENiG or IAg? Which is better?

Electronics Forum | Sat Mar 15 09:30:29 EDT 2008 | davef

Unlike other solderability protection, immersion coatings [eg, ImAg, ImSn, OSP, etc] can be reworked by the board fabricator prior to assembly operations. Reasons for selecting immersion are: * Until a supplier can demonstrate that they can turn bla

Bga replacement on ENIG Fabs.

Electronics Forum | Tue Jul 29 09:28:24 EDT 2003 | russ

Why would you get black pad from rework? I could be wrong but once the pad has accepted solder from the first reflow process wouldn't that eliminate the possibility of a latent finish defect? I am curious. We do perform rework on ENIG all of the tim

Bga replacement on ENIG Fabs.

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

ENIG Thickness for Flex

Electronics Forum | Mon Apr 13 09:27:28 EDT 2009 | hxr6038

We had an issue with the finish, PCB manufacturer is telling that they had a problem with the Nickel rework, which resulted in 20% fall out. Please help me by providing the ENIG thickness for Flex boards, is it same as rigid boards as per IPC 4552. I

ENiG or IAg? Which is better?

Electronics Forum | Thu Mar 06 10:43:49 EST 2008 | samir

Folks, what is the industry consensus? Which is the more popular lead-free, flat finish these days? Here's what I know from my experience. IAg: 1. Quality of finish is dependent on supplier 2. Can NOT be reworked. It is known that reworking t

Bga replacement on ENIG Fabs.

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

ENiG or IAg? Which is better?

Electronics Forum | Fri Mar 14 11:04:54 EDT 2008 | herman

Samir, To correct some misconceptions on the answers to your question, and "what you know from experience": With both ENIG (Electroless Nickel/Immersion Gold-IAu) and IAg (immersion silver), soldering does not take place to the gold or the silver. Wh

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