Electronics Forum | Thu Feb 15 14:10:59 EST 2007 | Cmiller
Russ is correct. We have been using SAC 305 for SMT and SN100C for wave and selective and repair for about a year. May switch to SN100C in SMT at some point if we can get some paste that wets better.
Electronics Forum | Tue Feb 20 16:42:31 EST 2007 | ratsalad
We have been using SAC 305 for reflow and Cobalt 995 (very similar to SN100C, only cheaper) for wave and rework for quite a while now with no issues that I'm aware of.
Electronics Forum | Thu Mar 15 10:05:41 EDT 2007 | Johnny
Sorry new to this... Question: will I have any problem soldering a resistor network with SAC305 coated leads using a normal leaded wave process besides the normal board thickness issues Thx
Electronics Forum | Fri Mar 16 08:01:53 EDT 2007 | ck_the_flip
SAC coated leads on certain components require more dwell time. If you find that you have top-side wetting issues, slow the conveyor down a bit or increase your wave height, or, a combination of the 2.
Electronics Forum | Tue Apr 17 00:27:48 EDT 2007 | pfifla1
take a look at sn100c, less dross & better wetting than sn/pb alloys.
Electronics Forum | Tue Apr 17 02:01:12 EDT 2007 | Wayne
Yes, all the leadfree solders are currently for consumer products. Military and aerospace industry haven't implemented leadfree yet. They are still study which to go! Maybe that time, we all can follow military std and having high reliability product
Electronics Forum | Wed Sep 17 09:33:08 EDT 2008 | vladig
There is one thing you should keep in mind, though. It's better not to have any area of the leads covered with only SAC after re-flow, just to make sure you Sn-whiskers won't have any chance to grow :-) Vlad
Electronics Forum | Wed Oct 01 10:30:33 EDT 2008 | stepheniii
Be sure to peel the potatoes. I saw a guy use a potato to purify gold on the TV show Rough Science. Seriously though I would think SAC305 to SN100C wouldn't be as bad as eutectic to leadfree.
Electronics Forum | Wed Apr 22 23:25:15 EDT 2009 | jandon
We were using AIM WS485 SAC305 and AIM NC257 SAC305 and we had problems with voiding and AIM�s narrow process windows. Now we are using Indium3.2 and Indium8.9 with much better results.
Electronics Forum | Sat Sep 12 10:12:20 EDT 2009 | tylaburg
My customer wants an SnPb 63/37 BGA soldered using SAC305 solder paste. What data is avaiable showing the long term reliability of the intermetallics of the solder joints?
