Electronics Forum | Thu Jun 29 10:11:06 EDT 2000 | John Thorup
Hi Bob, welcome Let's take this a little further. You'll also see HASL referred to as HAL and gold referred to as ENIG (electroless nickle, immersion gold. Other common surface finishes for preserving solderability include OSP(organic suface protect
Electronics Forum | Wed Nov 12 09:32:30 EST 2008 | markhoch
Are there better options? Dude, EVERYTHING else is a better option. Gluing aluminum foil down to the bare copper would be a better option. ENIG (Electroless Nickel Immersion Gold), Immersion Silver, Immersion Tin, and OSP all provide flatter surfac
Electronics Forum | Thu Apr 04 09:22:35 EST 2002 | itempea
What are the normal control limits in the industry, for a well controlled process, using a 6 mils stencil? Should they be different according to the surface finish (higher UCL for ENIG, Im SN, etc, lower UCL for HASL)? Thanks, Ioan
Electronics Forum | Mon Jun 10 22:14:49 EDT 2002 | davef
While they're '50 pitch', you need to think of 0402 as fine pitch parts. So, ENIG, imm silver, and imm tin finishes and probably OSP would be good choices. Stay away from HASL.
Electronics Forum | Fri Dec 19 09:57:07 EST 2003 | davef
We agree with Deano. Can you use ENIG on your board?
Electronics Forum | Wed Jun 29 17:18:41 EDT 2005 | GS*
Very interesting tread, many thanks to all. Matt please, now what does it mean for you? Will your custmer accept dull solder joints or will the plating be changed ? (ie. HASL, ENIG, etc) Tnks and regards GS*
Electronics Forum | Fri Dec 08 00:02:35 EST 2006 | Jack
Hi all, I found this article (Dealing with "the black pad defect)about reworking bare PCB with black pad symptom...Use HASL to treat black pad..Have you guys try this before?? www.smta.org/files/SMTAI01-Jay
Electronics Forum | Mon Nov 10 12:29:59 EST 2008 | joeherz
Dave, You've got me worried - All of the boards we've tested to this point are LF HASL. Why do you say "can't be ENIG"? Am I missing something? We have not sectioned soldered boards as yet but plan to shortly. Thanks.
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).
Electronics Forum | Mon Sep 17 12:21:43 EDT 2018 | bpeay
M_, the parts may be similar but the boards look to be different. Is the thermal relief for each lead on each board the same? what is the board finish, HASL, Enig, OSP or other? The part itself may not be your problem but the part that is partial pla
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