Electronics Forum | Fri Feb 05 14:39:50 EST 2010 | gregcr
Hi All, We evaluated and approved KESTER R520A for our default RoHS solder paste a couple years back. It's time to re-evaluate to see if this material is still the best choice. Please let me know your opinion on the solder paste you are using, and
Electronics Forum | Fri Feb 26 14:36:58 EST 2010 | gregp
Hi Dave, The short answer is "it doesn't". The mascot is simply a light guided assembly system. The major difference is the CS-400E machine has the fully programmable cut and clinch unit doing it's thing under the board while it is being assembled.
Electronics Forum | Wed Feb 17 12:16:17 EST 2010 | dcell_1t
Hi there: During the past weeks (let's say since beginning of the year) we've been experiencing some issues with shifted components. We verify for position before Reflow oven and the components are Ok, but they observe shifted after reflow. it occurs
Electronics Forum | Mon Mar 08 05:03:24 EST 2010 | grahamcooper22
Hi, I fully agree with isd.jww. The difference in the solder joint appearance of the 2 joints highlighted could be down to a few reasons...reflow profile (I know you've checked, but have you stuck a thermocouple on this actual joint ? ), contaminatio
Electronics Forum | Thu Mar 11 11:08:22 EST 2010 | geocep
I am using AIM Electropure SN63/Pb37 Solder, & AIM NC266-3 Flux; just like what ACE recommends. I have both Ultra High Pure T-Tanks and a Cryogenic Dewar Tank for Nitrogen, and neither seems to have improved the problem. I place a piece of tempered
Electronics Forum | Mon Apr 19 10:52:05 EDT 2010 | esca
Hi, if you want to verify the gold contamination, is mandatory to use the XPS and FTIR analysis, but is difficult think about a gold contamination from 3 different manufacturers. Do you have cleaned the PCBs after an erroneous screen process ? If no
Electronics Forum | Wed Apr 21 17:50:04 EDT 2010 | joeherz
Does it have to be one for both 1D and 2D? We > scan barcodes we print with a 200 DPI printer > which works out to 5 mil wide lines with no > problem. 2D barcodes need a completely different > kind of scanner. > > I know there are scanners > th
Electronics Forum | Fri Jun 04 01:13:31 EDT 2010 | boardhouse
Hi fotis, Big difference between Cem3 & FR4 is that FR4 the glass is woven and Cem3 is sheet glass non-woven. for Multi layer product, i would not consider Cem3 due to increase chance of de-lam due to lack of weave for strength. Cem1 and Cem3 are
Electronics Forum | Mon Jun 07 17:36:19 EDT 2010 | vmorina
Greetings SMT folks, My name is Danny, I am looking to purchase a low-medium/prototype reflow soldering machine. I would like to have your opinions for which vendor I should go for and model. I have been looking at the convection heating reflow sold
Electronics Forum | Fri Jun 18 17:36:10 EDT 2010 | sid
Good afternoon all, I have been trying to find a solution to a defect I just noticed. After stencil printing and smt part placement on the secondary side of my boards, I run them through a wave soldering system. All my components got soldered perfe
