Electronics Forum: hasl lead-free (Page 1 of 13)

Changing Ni/Au finish to HASL lead free

Electronics Forum | Mon Dec 20 08:23:30 EST 2010 | johanhuizing

The buyers in our company like to change the PCB finishing because of reducing costs. The proposed change is going from Ni/Au to HASL lead free, I know that in the beginning of the lead free period there where a lot of problems to use the HASL especi

PCB Surface Finishing for good solderability & rework

Electronics Forum | Wed Jan 13 04:07:58 EST 2016 | crystalpcb

Hi Syed, I'm a PCB engineer from China. First:Immersion gold surface finish is the best for PCBs. Second:HASL(Lead-Free HASL) Then:HAL(with lead) The cheapest surface finish is OSP(After 15 days will be oxidized)

Lead free profile

Electronics Forum | Mon Jan 31 16:59:22 EST 2005 | frankracine

Hi Jay, Concerning you PCB, what TG do you expect to use for your lead free process? On my side I have a problem. I order PCB from Canada and from China. My PCB vendor in china is producing a lot of OSP and ENIG PCB, no HASL lead free and in Cana

HASL lead free thickness

Electronics Forum | Tue Nov 16 06:52:44 EST 2010 | cacace

1 um". Some PCB manufacturer is telling me that this specification is not feasible in production. I would know if this position is due to the equipment (or process control) they have, or if in effect is not possible to satisfy my requests.

Changing Ni/Au finish to HASL lead free

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

Solderality problems with SN100C Lead Free Hasl

Electronics Forum | Thu Sep 21 12:36:45 EDT 2006 | bradlanger

Just wondering if there are any users of SN100C lead free hasl finsh out there. If so what kind of results are you getting as far as solderability is concerned?

HASL lead free thickness

Electronics Forum | Wed Nov 17 07:39:20 EST 2010 | jax

Most PCB manufacturers should be able to fall between 1.25um-5.00um for Pb-Free HASL. I doubt you will get anyone to agree to anything higher. If you are going to require an average thickness, make sure you also state "No Copper exposure allowed".

HASL lead free thickness

Electronics Forum | Wed Nov 17 10:03:29 EST 2010 | scottp

Instead of a minimum thickness, we require no exposed copper or SnCu intermetallic. We've been having a lot of trouble lately with suppliers of SN100 HASL boards giving us pads with very irregular solder deposits with areas of exposed intermetallic.

Changing Ni/Au finish to HASL lead free

Electronics Forum | Mon Dec 20 16:22:45 EST 2010 | rkondner

When you say Fine Pitch is this .5mm or is it smaller? I wonder what problems they experienced with HASL, the only problem I recall hearing was the surface was not flat. When applying paste with a stencil I can not see how the flatness is an issue.

Changing Ni/Au finish to HASL lead free

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

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