Electronics Forum | Mon Nov 26 12:13:53 EST 2007 | ratsalad
We had problems with their EM907 turning into a brick well before its expiration date. Since then, Kester has pulled EM907 production back to the United States (the last I heard) and we've switched our primary Pb-free paste vendor away from Kester.
Electronics Forum | Mon Nov 26 15:22:09 EST 2007 | kevslatvin
It is the EM907 that we are currently using. All of the jars we currently have are made in Mexico. When did production move back to the US?
Electronics Forum | Tue Dec 04 05:27:43 EST 2012 | eniac
Last 6 years I work with EM907 from Kester, with SAC305. And I don't have any problems.
Electronics Forum | Fri May 26 11:05:15 EDT 2006 | jbrower
Hey Pete. I agree, 250c is a bit on the high side, I'm working with the EM907 paste and getting great results witha top end of 230-236. Best of all, our CEO had a very dificult time telling which board was lead free and which was lead. Have a great
Electronics Forum | Tue Dec 04 14:16:32 EST 2012 | eniac
AIM can give a good result, I tried the solder paste from many manufacturer - AIM, Kester, Indium, Koki, Alpha Metals, Heraeus - but I stopped my choice at Kester. For example, right now I have EM907 with date of manufacture in february 2010 (it's ju
Electronics Forum | Tue Nov 27 08:47:24 EST 2007 | ratsalad
The letter below was dated December 13, 2006 from Kester's Senior Market Development Engineer. I guess since then they have moved production back to Mexico. We no longer use EM907 as our primary Pb-free paste so I haven't seen any containers in a w
Electronics Forum | Thu Apr 06 17:02:48 EDT 2006 | jbrower
I'm just dying to hear. I think this past will be a contender for us, I'd use it but I allready commited to using the Kester EM907. Maybe after the first of the year I'll look at switching to this paste. Ive never heard of a problem like that, but
Electronics Forum | Wed Mar 05 17:03:36 EST 2008 | ratsalad
We had the misfortune of ending up with a batch of Kester EM907 that would start to "set up" well before it's shelf life was over. Since the lead time for a new batch was excessive, a Kester technical guru came to our facility to help us deal with t
Electronics Forum | Sat Aug 22 15:12:32 EDT 2009 | rossi
Thank you for replying. 1) the finish is Gold Immersion (ENIG) 2) paste type EM907 SN96.5/AG3.0/CU0.5 3) it is always the same BGA but its not on the same ball every time. It is always at the joint on the PCB pad like the solder is not sticking prope
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
