Electronics Forum | Mon May 09 15:27:05 EDT 2005 | jdumont
We used the 92J a couple of years ago for a while. It performed very well for us. However when we started batch cleaning our assemblies the 92J post solder residue was not very easy to remove so we switched to Kester 256 which cleaned better. JD
Electronics Forum | Tue Jul 12 11:50:23 EDT 2005 | Mark
Chris (if thats your real name), For 0201 I only use Asahi from Singapore. If it is 0402 Asahi is by far the best. Kester is mainly used for 0603 and Indium is a good choice for BGA's only (and some QFP's). Just my frank opinion. Hope the infor
Electronics Forum | Fri Jun 30 10:51:36 EDT 2006 | samir
Indium Pb paste has always been great but the flux tends to implode on the BGA's (despite many different profile strategies). The Indium Pb-Free is horrible...horrible, and have been kicked out of my lead-free eval. PS-I went to Moonman/Guru link a
Electronics Forum | Thu Nov 17 03:34:51 EST 2005 | cangly
Hi, We have a board with over 100 chips (mixed size) and some long Connector DIP through out Wave solder with many issues of no solder and solder bridge, (using clean flux with bubble fluxer and Kester solder bar). Currently we tried to reduce the de
Electronics Forum | Fri Dec 02 08:57:39 EST 2005 | russ
You hit it on the nose Pavel, the fluxes in paste are formulated to have 2 activating points if you will, one at low temp and one at high temp. when the low temp flux gets killed this is what you will see. This is the main reason we opted out of K
Electronics Forum | Tue Jan 03 18:10:56 EST 2006 | slthomas
has anyone used or trialed the SACX from Alpha, > from reportes and studies carried out it seems > that its a go between SAC305 and SN100. Same question re: Kester's K100. Apparently it's a new .6% Cu alloy that they haven't yet begun to market h
Electronics Forum | Thu Mar 16 14:15:54 EST 2006 | ratsalad
Well I honestly can't say that I have enough flow, so that's a good point. We don't have a flow meter or manometer on our reflow exhaust. How do you measure that? Or, is it just that you make sure your exhaust path is clean and the blower is wor
Electronics Forum | Fri May 12 12:07:10 EDT 2006 | solderiron
The kester better known as KY'd Sn/Cu has more copper intermetallic growth over time, dissolves copper from the board faster so repairing and touchup can damage board. Bridges more than SN100c. Does not thermal cycle well. Has shrink cracks that can
Electronics Forum | Tue Jun 06 12:23:54 EDT 2006 | jdumont
Thanks for the reply. I actually heard back from Kester who say they dont test with other fluxes (obviously) but that there shouldnt be any issues. Of course they recommended their wave flux to replace our Multicore and can confidently then say there
Electronics Forum | Tue Nov 07 14:34:04 EST 2006 | jeffm
We are using Kester Type R520A, Alloy SN96.5/A63.0/CU.5 paste which is applied using an MPM Accuflex machine. Our plant Humidity is 38 degrees. We are seeing insufficient paste post stencil on fine pitch parts. Could this be an environment issue? In
