Electronics Forum | Sun Jun 14 03:02:14 EDT 2020 | kylehunter
We did a batch of boards with lead free HASL that we thought was leaded. Using standard leaded paste worked, but we did have some wetting issues. The issues were resolved when switching back to leaded HASL. Can't speak to your specific fiducial issu
Electronics Forum | Thu Mar 24 07:06:06 EST 2005 | davef
There's a lot of comparison tables on the web. Here's one: Properties - Summary [A Winlow Circatex] Attribute||Hasl||Immersion Silver||Immersion Tin||Electroless Pd||OSP||Eless Ni / Imm Au Shelf Life (months)||12||12||12||12||12||6 Multiple Reflows
Electronics Forum | Wed Mar 16 14:12:19 EST 2005 | KT
We are moving from ENIG to Immersion Ag. We notice PCB's with Ag finish getting more heat(increase in peak temp) than the ENIG. Any reasoning behind this phenomenon ? KT
Electronics Forum | Wed Jan 13 15:47:57 EST 2016 | dyoungquist
What surface finish are you using on the bare PCBs? ENIG, Silver, OSP, Leadfree HASL, etc.?
Electronics Forum | Fri Mar 04 08:29:53 EST 2016 | esoderberg
Anyone using Entek OM final finish to replace HASL & ENIG?
Electronics Forum | Fri Feb 28 09:16:49 EST 2003 | davef
Never heard of Bareco wax. Check with your press supplier. They'll have the dirt on this carnuba oil stuff. I do question replacing ENIG with HASL, no other changes. HASL is going to fill that hole alot more than ENIG. Certainly it will displace
Electronics Forum | Sun Aug 07 21:38:27 EDT 2005 | darby
Get a couple of quotes on ENIG. You may be surprised at the price. HASL, (which is often considered to be the cheapest finish), is now more expensive for us than ENIG due to the extra processes involved.
Electronics Forum | Sun Jun 29 15:03:04 EDT 2008 | jensteele
I was referring to the HASL supplied by the supplier...specifically Lead Free HASL. I've been searching the web and I cannot find a thickness specification like we have for ENIG and Immersion Silver.
Electronics Forum | Mon Sep 21 15:06:05 EDT 2009 | rramplin
I know the approximate shelf life for good and OK storage of ENIG and Ag boards but I do not know what these times are like for HASL. Can anyone help me out here. Thanks.
Electronics Forum | Wed Oct 30 18:19:17 EDT 2019 | slthomas
We use ENIG whenever possible, to the extent that we will try to talk customers out of Pb-free HASL until our keyboard punching fingers bleed. It's much more solderable than HASL and it's flat.
