Electronics Forum | Wed Mar 02 05:14:07 EST 2005 | ABHI
Guys, Solder paste height worries all of us as we encounter the non wets after reflow. More so in fine pitch QFP's. The non wets are not always caused by solder paste height. Many other contributors. Even the pad geometry on te board can contribute t
Electronics Forum | Mon Feb 21 18:13:23 EST 2005 | gpaelmo
As davef states above, you would like to have flat surfaces below 25 mil. We are a contract manufacturer also and we've done thousands of 15 mil QFP's with HASL finish with no problems. Your success will depend on quality of PCB supplier providing th
Electronics Forum | Wed Feb 23 10:36:37 EST 2005 | Indy
Hi Rob, I had tried printig anisotropic conductive adhesive as a replacement for solder paste. Following were my finding. Adv: - curing temp is around 120-150C as compared to 217C (Pb-free) solder. - good electrical conductivity, since it is usual
Electronics Forum | Wed Mar 09 08:23:31 EST 2005 | davef
We don't have experience on this, but first we'd talk to a technical type at our solder paste supplier. Baring that, we'd: * Soak a paper towel in a 'solvent' [ie Kyzen XJN, EnviroSense Enviro Gold, Petroferm Hydrex, etc]. * Place the towel in conta
Electronics Forum | Wed May 04 09:37:08 EDT 2005 | MikeaJ
I would not recommend trying to cram or mix and match multiple images on a stencil. Especially if you are a contract house, and your clients don't understand why sending one board seperate from a panel of four is a pain in the face. However, I have h
Electronics Forum | Wed May 04 19:09:52 EDT 2005 | russ
Can you not just check the part when it is on line and being loaded into the machine? You should only need to check this once. Verify your setup to the bom and not your assembled boards to the BOM. Correct setup and program = correct boards. More
Electronics Forum | Tue May 17 16:46:52 EDT 2005 | davef
Most placement machine equipment suppliers offer software for line balancing. What's with Fuji? Fujitrax is a system developed in order to attain high levels of "progress management, quality management & traceability" over several SMT lines, throug
Electronics Forum | Mon Jun 20 16:48:24 EDT 2005 | Steve
Although I am sure that some of the postings here are legitimate, it is obvious that many of them have been written by AOI manufacturers or suppliers. This forum is meant to be a communication channel for process engineers, not salesmen. Please sav
Electronics Forum | Tue Jun 21 09:06:02 EDT 2005 | pci
Although I am sure that some of the postings here > are legitimate, it is obvious that many of them > have been written by AOI manufacturers or > suppliers. This forum is meant to be a > communication channel for process engineers, not > salesm
Electronics Forum | Sat May 28 21:23:38 EDT 2005 | Just my thoughts
This is somewhat a hard question: Have You ever concider to contact Your manufactor servive engineer?! I have been seeing a lot of "machine specific" questions here in this forum and I must wonder if this forum is to help people out when there is a n
