Electronics Forum | Fri Apr 20 09:19:58 EDT 2012 | davef
kkay: I'm not real clear on where in the assembly process flow that you are considering replacing SAC305 with SN100. Please clarify
Electronics Forum | Thu Sep 23 08:47:25 EDT 2021 | majdi4
1)Though in many cases the difference between SAC305 and SAC405 was small,and not always statistically significant, it was observed that SAC405 generally outperformed SAC305 joints. Under 0°C to 100°C thermal cycling,no statistically significant
Electronics Forum | Tue Apr 17 01:45:16 EDT 2007 | Jane
There are several alloys had been using in the industry. For SMT: most people use SAC305 For Wave: most of them use SAC305,SC100C,SCS7,and SACX0307. Of course, different alloy composition have its own recommended profile. There is no such rule tellin
Electronics Forum | Fri Oct 01 01:27:58 EDT 2021 | sn
Hi Davef, thank you for your information.
Electronics Forum | Fri Oct 01 03:16:39 EDT 2021 | sn
thank you for your information.
Electronics Forum | Mon Jul 11 19:32:27 EDT 2005 | fctassembly
Yes, there have been many issues with the fast dissolution of copper by the SAC305 alloy. In fact, there are companies who have disqualified it for repair operations due to loss/thinning of the pads. SN100C dissolves copper much slower than SAC305 an
Electronics Forum | Thu Dec 29 22:19:36 EST 2005 | Joseph
We have tested SN100C for LF wave soldering process since August'05 and currently start production for a month ago. Initially we use SAC305, but due to the shrinkage cavities (micro-crack) we changeover to SN100C. In summary, SN100C did perform well
Electronics Forum | Tue Feb 07 13:01:52 EST 2006 | amol_kane
Hi, does anyone have any experience with common wave soldering defects using SAC305 alloy?.....i am finding a lot of what seem to be shrinkage cracks on the bottom side surface of the soldered components.....there is also a lot of directional cooling
Electronics Forum | Sat Feb 18 15:40:45 EST 2006 | Cmiller
Switch to SN100C (no pun intended). I cant help with the SAC 305 issues but we should have a wave with SN100 running very soon. I will let you all know how that goes. Please report back on the x-sectioning and share the results. I have heard some v
Electronics Forum | Thu Aug 28 18:48:49 EDT 2008 | markhoch
You're using a SAC305 chemistry? Double check your liquidus temp! Your profile shows a liquidus temp of 217 degrees C. SAC305 is not eutectic. (It doesn't transition from paste to liquid instantly). It goes thru a "pasty" stage. We use a temp of 221
