Electronics Forum | Wed Jan 15 11:18:51 EST 2020 | avillaro2020
Hi Evtimov, Thanks again! The solder wicking/open solder joint is not actually gross rejection, it is only a few and appeared random (difficult to trend the location of the opens), what is perflexing is that i have this 1 or 2 open solder joints sur
Electronics Forum | Thu Mar 22 13:41:41 EST 2001 | mparker
What's the reality of the situation? Are you creating a specmanship issue here just to satisfy Class 3? Can you demonstrate that the paste volume applied to the plastic QFP's give sufficient overall fillets for mechanical and electrical properties? W
Electronics Forum | Fri Dec 11 17:34:24 EST 2020 | proceng1
You can run it on a carrier board to catch any paste that falls. When we do Pin in Paste, we sometimes over print the apertures a bit to get the extra paste volume.
Electronics Forum | Mon Mar 06 22:30:12 EST 2006 | mainenetservices
We have a customer transitioning slowly to lead free due to necessity rather than a need to comply i.e. some of their BGAs can only be purchased Pb free only. So for this we would want to produce them a leadfree soldered PCB (not necessarly RoHS comp
Electronics Forum | Wed Sep 30 15:28:49 EDT 2020 | spoiltforchoice
If you could change the design, a 2x25 1.27mm pitch surface mount connector is a standard part from Wurth. Samtec also do versions in any pin count you might desire, with locating pins, without, with picking clip etc.
Electronics Forum | Sun May 13 22:55:03 EDT 2001 | zam_bri
Solder paste supplied in Catridge vs Jar. What is the pros and cons ? /zam_bri
Electronics Forum | Fri Nov 08 14:51:37 EST 2002 | davef
You should take steps to prevent paste seperation, regardless of the container type.
Electronics Forum | Tue Aug 05 03:22:48 EDT 2003 | emeto
Hi, Does anyone knows what's the rate for used materials for making soloder pastes? I found some charts, but they are old. I'm interested is leadfree already the most used and should I change my paste?
Electronics Forum | Thu Nov 21 02:43:07 EST 2002 | jate
Hi, Jar's quality is easier to measure. If you want to know paste viscosity etc. it's easier if you use jar. I have bad experiences about cartridges. I used cartridges for a short time but I change it back to jar because flux separated too easily in
Electronics Forum | Mon Nov 07 06:16:59 EST 2005 | laxman
Hi, We have faced the solderability issue (Dewetting and solder balls)in all the Boards after reflow.When we found this issue we discarded the old paste and started using the new paste then for some hours the solderability found to be O.K. After so
