Electronics Forum | Tue Nov 03 18:09:17 EST 2009 | gregoryyork
I think most have summed up the first pictures also is the drillng looking like it is misregistered as well. Better to do a solvent test to determine resist cure not the old stuff the newer chemicals show under cure problem much better. Try your st
Electronics Forum | Wed Aug 04 17:12:08 EDT 1999 | John Thorup
| I need to find quality benchtop develop, strip, & etch equipment. | Any ideas? try LPKF in Beaverton, Or. 503/634-0604 or the link below. I haven't used their eq so this is not an endorsement John Thorup
Electronics Forum | Wed Aug 04 17:21:59 EDT 1999 | John Thorup
| | I need to find quality benchtop develop, strip, & etch equipment. | | Any ideas? | try LPKF in Beaverton, Or. 503/634-0604 or the link below. I haven't used their eq so this is not an endorsement | John Thorup | let's try that link again
Electronics Forum | Thu Oct 30 19:59:05 EDT 2008 | gregoryyork
solder ball was caused by hasl process not reflow. seen before many times, look around wells of smt on bare boards should be more of them
Electronics Forum | Tue Nov 03 06:23:12 EST 2009 | josh_brubaker
Has anyone ever done a tape test to see if the solder resist pulls away from the PCB? Is this an acceptable method for testing solder resist acceptability? This is an issue I am experiencing with our PCBs. I am receiving boards with excess solder o
Electronics Forum | Thu Sep 24 10:19:55 EDT 1998 | Dave F
| i am working on a no-clean process implementation project in a company. i want to change a board to no-clean which had dendrite problems underneath the small resistors on the bottom side(in smt).i want more information on the exact cause of dendrit
Electronics Forum | Tue Oct 27 13:56:36 EDT 2009 | julie331975
I work for a CEM. We are having some quality issues with some pcb's that came from China. (I know, big surprise) Can anyone with pcb manufacturing experience look at some pictures I have and give me an opinion as to what could go wrong in the pcb man
Electronics Forum | Mon Nov 02 07:16:47 EST 2009 | umar
Base on the top picture condition, seems like the boards condition is a lot with solder splash or solder ball which is per IPC-610 is under reject (under 5.6.2)for class 3 product. While the picture 2 is showing those the solder resist is not melt pr
Electronics Forum | Thu Aug 12 11:00:42 EDT 2010 | hegemon
Without seeing a picture, my first instinct would be first and foremost some fixturing that provides full support for your print process. After that, since you are citing bow and twist, consider that the fixturing might as well travel through the ov
Electronics Forum | Fri Aug 06 10:06:34 EDT 1999 | Peter Brant
| | | I need to find quality benchtop develop, strip, & etch equipment. | | | Any ideas? | | try LPKF in Beaverton, Or. 503/634-0604 or the link below. I haven't used their eq so this is not an endorsement | | John Thorup | | let's try that link a
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