Electronics Forum | Thu Dec 07 14:13:06 EST 2006 | russ
Seriously folks Kester has some major issues with their thickeners. Do not spend time fixing your process that is the same as it has been. As a post here stated, Alpha is going to Mexico, we will see probs form them here pretty soon as well. Kest
Electronics Forum | Sun Nov 24 09:54:24 EST 2002 | davef
On a HASL board that has poor wetting on the pad, consider looking further downstream in the process than your assembly shop. For instance, take a look at the bare boards. Look for solder mask bleed onto the pads. This will show-up on the outside
Electronics Forum | Fri Feb 25 09:24:16 EST 2005 | pjc
Here are some of the leading No-Pb solderpaste companies: www.indium.com www.kester.com www.alphametals.com www.aimsolder.com www.multicore.com www.qualitek.com They'll all send free samples.
Electronics Forum | Wed Jul 20 07:50:27 EDT 2005 | jdumont
I have tried this product and one from Kester with mixed results. Just follow the directions exactly. If it says rub the leads with the swab for 60 seconds, do it! Good luck!
Electronics Forum | Fri Jan 27 11:30:47 EST 2006 | solderiron
Kester is offering a tin/copper alloy for lead free. Any comments regarding using just tin/copper as opposed to tin/silver/copper or tin/nickel/copper? the price is low but why wouldn't everyone else offer just this alloy as opposed to the standard S
Electronics Forum | Wed Dec 06 14:42:28 EST 2006 | wrong way
Im using kester easy profile 256 and just this week started seeing problems with the paste being to thick sticking to the sqeeges and not going thur the screen this is not a lead free paste but it is a keester product
Electronics Forum | Tue Sep 07 12:57:00 EDT 2010 | jrr3434
Thanks for the info mike. How well do these batch cleaners work with densely populated through hole boards that were solder with no clean flux? Is there a problem with water getting trapped under large capacitors? I'm using kester 959t for flux on b
Electronics Forum | Wed May 11 20:41:53 EDT 2022 | donovan03608
The leads on the FPC are pre-tinned on both sides with SAC305. The receiving leads are AU. We coat all surfaces with Kester 979 no-clean flux dispensed via pen prior to initiating the hotbar cycle.
Electronics Forum | Tue Feb 17 09:37:16 EST 2015 | charliedci
We made the same change a year ago, from foam to spray fluxer. One of the reasons we changed, to keep the acid number within specs (foam fluxing) we had to measure once or twice a day and add DI water to make up for evaporation, all along not able to
Electronics Forum | Wed Jan 06 09:38:59 EST 2010 | lynn_norman
Via failure could be caused by cracks in the barrel, or thin plating, or fractures in the traces leading to the vias, . X-ray analysis could pick up a fractured trace and cross-sectioning of the vias could pick up the cracks and thin plating. Secon
