Electronics Forum | Mon Sep 23 14:08:38 EDT 2002 | rocco
Hello My question is if the diferent types of allows that components manufacturers have considered like SnAg,SnCu,SnBi,NiPd,etc for platings instead Pb Have special handling at storage,floor handling and re-using as well as reworking ... Consideri
Electronics Forum | Tue Dec 06 14:30:49 EST 2005 | Samir Nagaheenanajar
I agree with Ken!! Amen to that, brother! At my company here in Rihad, our design guys are in a tizzy about lead free components and tin whiskers, and with every questionable through-hole solder joint, or when our purchasing department gets "notif
Electronics Forum | Tue Feb 07 13:39:42 EST 2006 | gregoryyork
You can use straight forward Tin/Copper but it flows very poorly so solderability is an issue. Dosing with Phos improves this but need to stay on top of it. We have supplied some 3.8%Ag alloys for flow they work well but you get a small 'chill point'
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
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 | 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.
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
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 | Tue Dec 21 11:49:33 EST 2010 | remullis
1st the buyer shouldn't control the process based on cost. Let them buy stuff and stick to that. 2nd, I do think leveling in th HASL process is important. If you have high spots on pads for fine pitch your wiping away more of that aperture than othe
