Electronics Forum: soldering problems with qfn (Page 2 of 36)

Solderality problems with SN100C Lead Free Hasl

Electronics Forum | Wed Oct 04 10:18:51 EDT 2006 | greg york

Now seen the Blow Holes and shallow inverted and non wetting problem an aweful lot over here. Over came the Blow Holes and shallow inverted joints by washing the bare PCB with hot Saponifier then rinse and dry = problem dissapears. Think most PCB ven

Solderality problems with SN100C Lead Free Hasl

Electronics Forum | Fri Sep 22 04:43:18 EDT 2006 | greg york

Interesting you should ask this what problems are you seeing. Non wetting and blow holes and shallow fillets at all??? Cheers Greg

Solderality problems with SN100C Lead Free Hasl

Electronics Forum | Thu Sep 21 17:39:32 EDT 2006 | Cmiller

We have used it and it seems to be fine. I think we have probably run a few thousand boards with it across maybe 6 different assemblies.

Solderality problems with SN100C Lead Free Hasl

Electronics Forum | Tue Sep 26 12:04:11 EDT 2006 | sliebl

Is there a difference between SN100, SN100C, and SN100CL?

Solderality problems with SN100C Lead Free Hasl

Electronics Forum | Tue Sep 26 12:36:38 EDT 2006 | russ

Bob should answer this but yes there is a diiference, I wonder if you do not need to add the SN100(cu???) to get your alloy correct again, I believe that additional copper must be added on a scheduled basis. Russ

Solderality problems with SN100C Lead Free Hasl

Electronics Forum | Tue Oct 03 17:11:42 EDT 2006 | cuculi54986@yahoo.com

Our board suppliers tell us, there is no specification they use for HASL thickness, other than "coverage". They also say they have very little control over the HASL thickness. This was not an issue for us in the past, until we started using Pb-fr

Solderality problems with SN100C Lead Free Hasl

Electronics Forum | Mon Oct 02 10:50:02 EDT 2006 | bradlanger

Bob, I agree that these are all board shop issues. I think the only one that is related to the Hasl process is the surface mount solerability issues. I think they are still putting the coating on too thin even though they say it is fine. This proble

Solderality problems with SN100C Lead Free Hasl

Electronics Forum | Tue Sep 26 00:42:36 EDT 2006 | fctassembly

Hello Brad, I think Greg is a mind reader!! Thanks for the opportunity to give an update to the forum on SN100CL Lead Free HASL. Conversions to SN100CL HASL is occuring at a rapid pace worldwide. As of July 2006, there were over 250 HASL machines ru

Solderality problems with SN100C Lead Free Hasl

Electronics Forum | Tue Oct 03 22:48:21 EDT 2006 | C.K. the Flip

It sounds as if this Sn100c HASL process is still in its infancy requiring further process development and characterization..weather its a better more active flux or a different profile... Given your situation of the Sn100c coating actually "repellin

soldering issues with MELFs

Electronics Forum | Thu Jun 26 09:47:12 EDT 2008 | kevinjm

Hi Mark, Are these lead free parts on a leaded process? If so, that could be your problem. We had the same issue in my place a while back.


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