Electronics Forum | Thu Sep 25 08:30:27 EDT 2008 | jwentz
Yes, we are looking at using it for our solder paste. The customer mentioned wants us to test our boards and initially we've heard the SAC105 is better for "higher mechanical stressed" assemblies. Thanks for your reply!!
Electronics Forum | Mon Mar 29 16:33:29 EDT 2010 | mikesewell
SAC 305 liquidus is 219 C. A hybrid profile is often recommended with a peak of 230 C (reflow the SAC and not kill the Pb parts) with an extended liquidus of 60-90 sec to get good alloy diffusion. Or if the design (parts & pwb) can tolerate it go P
Electronics Forum | Tue May 14 21:40:23 EDT 2013 | ultimatejoker
What is the different between SAC and LF Solder Alloys?I found out that LF38 is SAC105 and LF45 is SAC305. Is it because LF is some standard international name for particular country?
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 | 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
Electronics Forum | Thu Jan 19 16:38:39 EST 2012 | dyoungquist
We are not using SN100C in our reflow process but I know the type of flux made a big difference with our SAC305 solder. We started out using no-clean flux in our SAC305 paste and were having some issues. We then switched over to a water soluble flu
Electronics Forum | Thu Jun 28 09:54:06 EDT 2012 | mosborne1
Dave, They rework fine. All solder joints on the whole board look great especially for lead free sac305. Here are the reflow specs: SAC305 no clean solder paste – Kester EM907 Kic thermal profiling device – 50%process window green light profile. • M
Electronics Forum | Tue May 14 21:59:25 EDT 2013 | davef
SAC is a lead free solder alloy. At one time, Nippon Micrometal Corp. (NMC) [158-1, Sayamagahara, Iruma, 358-0032, Japan; +81.4.2934.6101 F+81.4.2934.5454 nmc-net.co.jp] called some of its alloys: LF35, LF45(SAC305), LF38(SAC105) and LF31(SAC405).
