Electronics Forum | Tue Jan 04 10:40:41 EST 2011 | johanhuizing
Hello Piter, I don't know which type of HASL we will be using, we decided to do some test and I have to decide together with two other people which material we will try. Searching on the internet i discovered that it's not so easy to find a good sol
Electronics Forum | Thu Feb 22 20:34:25 EST 2007 | davef
This [ http://www.smtnet.com/library/index.cfm?fuseaction=view_article_html&file=no_hasl ] describes HASL [hot air solder leveling], as well as other common types of solderability protection. It goes on the discuss the impact of the use of these coa
Electronics Forum | Wed Jul 29 22:50:17 EDT 1998 | Dave F
| We are investigating alternatives to HASL finishes for more dense PWBs. OSP is not a good choice because of low solid flux and possibly long shelf life. Immersion gold is expensive and so far has been more difficult to wave solder. Has anyone ha
Electronics Forum | Wed Sep 19 16:02:14 EDT 2001 | fcouture
Pad Metallurgy Used: >Is your question about this targeting the current industry capability of using tin plating technology on such small >pad dimensions? Actually I should have asked for tin/lead plating (HASL) and yes it's to have an idea on capab
Electronics Forum | Tue Nov 01 14:50:05 EDT 2016 | dyoungquist
The bare pcb has lead HASL finish. Components are lead-free and lead-free solder was used to solder the plate-through components. Is this acceptable or will there be reliability issues?
Electronics Forum | Tue Dec 21 04:09:49 EST 2010 | johanhuizing
0.5 and 0.4 mm pitch, we think we could get problems with the solderpaste stencil. Also some board have keypads and then we have do do partial gold and I think that will not reduce the costs
Electronics Forum | Wed Aug 30 08:20:40 EDT 2006 | Bob R.
Are there any standard qualification/acceptance requirements for immersion tin board finish? J-STD-003 calls out temp/humidity preconditioning followed by solderability testing which is similar to what we have in our (ancient) internal documents. O
Electronics Forum | Fri Sep 21 14:45:36 EDT 2001 | jschake
I asked several people their opinion of HASL 0201 pads and there was no positive feedback whatsoever. The most common concern was the domed/convex shape of the pad finish that would result in aperture gasketing problems, which you may already have e
Electronics Forum | Tue Dec 21 12:28:27 EST 2010 | wrongway
I know when we used them we had problems when one pad is 7 mils tall nest to a flat pad one lead touches the pad the lead next to it isnt touching anything so then have an open I don't see how anybody dosnt have problems with it that use quad flatpa
Electronics Forum | Tue Jan 04 10:37:48 EST 2011 | johanhuizing
Hi Mike, We only are using ENIG not hard gold, we are using edge contacts but the connectors will only be removed if the product is being replaced, normal life time for the equipment where the electronics is build-in is 15 years. Also the electronic
