Electronics Forum | Tue Feb 03 10:25:56 EST 2009 | milroy
Hi What is the surface finish you have? Following are true if you have HASL-LeadFree surface. I have had the same problem 3years ago and we did some micro-sectioning for further analysis, still the boards are functioning properly. But you have to
Electronics Forum | Fri Nov 02 09:09:56 EDT 2012 | davef
Sure you can use it it with leaded HASL. Recognize that ... * Your Sn42/Bi58 will no linger be Sn42/Bi58 * Your leaded HASL will no longer be the same leaded HASL that walked in the door to your plant * Lead from HASL coatings can diffuse through the
Electronics Forum | Wed Aug 27 07:13:05 EDT 2008 | eyalg
I need to solder SAC/HASL PC boards in a NON ROHS process (Tin Leaded solder paste and profile + Tin leaded components) Can I do that?? Regards, Eyal
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
Electronics Forum | Wed Sep 27 23:52:28 EDT 2006 | fctassembly
Hello Steve, Yes, there are differences in the various alloys and I have described briefly below these differences: SN100- a common name for 100% tin that is used to increase the tin content in 63/37. SN100C-Name for Tin/Copper/Nickel/Germanium all
Electronics Forum | Tue Apr 26 15:21:11 EDT 2005 | russ
Sounds to me like they are thinking since they have a gold board that it must be processed lead free. This kind of thing is happening all over since OEMs are starting to think about pb free and sending their purchasing and engineering to these semin
Electronics Forum | Thu Oct 05 11:59:51 EDT 2006 | Mario Scalzo, SMT CPE
Good afternoon all! Theoretically, there should not be any issues soldering to the SN100C as the tin content of the molten paste alloy should wet to the finish with no problem. I would just ensure that the peak temperature of the joint is above the
Electronics Forum | Wed Aug 19 18:18:02 EDT 2009 | smt_guy
Thanks Sir Dave. Yeah my apologies. To clarify, we built the product PCB whcih has a Lead-Free HASL Finish using a Sn63/Pb37 Solder paste. My major concern regarding reliability is that my profile whish is between 215'C-225'C was insufficient to ref
Electronics Forum | Fri Jun 07 09:39:06 EDT 2019 | cristian_amlima
I totally agree with you when whe talk about a lead-free process. In my early comment I thought we were talking about a tin-lead process with the pcb pb-free, when the solder paste limits should be respected. That is the motive the temperatures I sa
Electronics Forum | Tue Dec 13 11:27:58 EST 2011 | ck_the_flip
Here's the scenario: PCB Plating: Lead free HASL, Sn100C Solder Paste used: Sn62 (regular tin/lead solder with 2% silver). Anyone see any issues with this? What are the process considerations? Anyone??? PS-9 times out of 10, I don't get answe
