Electronics Forum | Tue Sep 16 16:51:25 EDT 2008 | vladig
Even BGA may be no braner if it's done properly :-) I had a few cases with that and afterall it worked fine. :-) I agree, it was a good think to mention. Vlad
Electronics Forum | Sat May 28 06:43:03 EDT 2005 | steve
I have the ability to offer both SAC and SN100C lead free alloys to my customer base. What might occur if a customer is already using SAC305 in their wave and they want to save money and go to SN100C. They now are mixing, tin,silver,copper with tin,c
Electronics Forum | Tue Sep 16 09:25:49 EDT 2008 | trynders
I had a vendor change thier lead finish from tin/lead to a SAC305. We built up several assemblies before we realized the change. The reflow process is a standard leaded profile peaking at 220 C. What are the reliablity concerns with mixing the tin/l
Electronics Forum | Thu Nov 03 09:43:55 EST 2005 | lupo
Check flux penetration and type of flux. How much is solid contents. The solder filling is better under Nitrogen. Check the time (speed) of the nozzle whether is correct. Usually For SAC305 the temperature of bath is 320C/degrees, but only for sel
Electronics Forum | Fri Jan 30 06:28:42 EST 2009 | gregoryyork
Hi Armando Hotflow 7 is a big machine and one of the best Reflow ovens around (in my opinion), well suited for Lead Free. A typical 1.6mm board has the following settings for Lead Free SAC305 paste All Temperature settings are Top and Bottom Prehea
Electronics Forum | Tue Sep 16 16:24:54 EDT 2008 | vladig
Well, as we are talking about lead finish, I don't think the question was about BGA. :-) AS far as the intermnetallics is concerned, then you are right, it might require a bit more heat delivered to the joints, but it also could be perfectly fine. Th
Electronics Forum | Tue Sep 16 16:30:49 EDT 2008 | ck_the_flip
Vlad, yes, he made no mention of a BGA, but I thought I'd just throw it in there. Many people are concerned with the "backward compatible" scenario - running RoHS parts with a Sn/Pb solder paste. The scenario's a no-brainer with most components, bu
Electronics Forum | Tue Oct 18 19:34:02 EDT 2011 | warwolf
so there is no one here baised in New Zealand that wants to buy our SAC305 solder dross and recycle it, we have about 120KG at the moment, anyone intrested?
Electronics Forum | Tue Sep 16 16:45:44 EDT 2008 | trynders
Thanks for the response! I thought is was odd the component vendor chose SAC for a lead frame finish. I am in the Military world, and things have been difficult to control from a lead-free standpoint. I have not been able to find any studies on SAC
Electronics Forum | Tue Sep 16 16:03:43 EDT 2008 | vladig
Well, typical content of Pb in Sn/Pb polating is a few percent (just to mitigate Sn whiskers growth). Therefore, the lead finished with SAC305 won't be much different from those finished with Sn/Pb. You can make one or two cross-sections for sanity c
