Electronics Forum | Sun Dec 22 22:09:11 EST 2019 | sssamw
Did you contact your solder paste supplier? Involve them for trouble shooting.
Electronics Forum | Thu Dec 26 13:28:08 EST 2019 | emeto
Show us your reflow profile. Most probably that will help us to troubleshoot better.
Electronics Forum | Sat Apr 23 00:21:10 EDT 2011 | azrina
As am doing screening right now, am not measuring the total cleanliness yet, i just observe by taking photos (FYI, am varying speed for conveyor belt for cleaning) and see whether the flux is able to be removed by certain parameters. the speed am usi
Electronics Forum | Fri Dec 27 17:13:53 EST 2019 | rhormigox
Thank you for the answers. The paste is as spec No-Clean https://www.chipquik.com/datasheets/TS391SNL50.pdf I'am writing them too. For the excessive cooking not sure, the oven sensor (that I think is about right) looks I am close to the profile, bu
Electronics Forum | Mon Dec 30 12:48:18 EST 2019 | rgduval
Keep in mind that the oven temperature does not, necessarily, equate to the board temperature. The thermal characteristics of the parts and copper will cause the board temperature to be different, sometimes significantly, than the oven temperature.
Electronics Forum | Fri Dec 20 18:48:18 EST 2019 | rhormigox
Reflow with lead free 96.5 /3/0.5 No-Clean T4 brown-orange burn color on parts While I have been an observer for years, now I am mostly new into reflow process. I tried to reflow a big 4 Layers board and without knowing much about solder pastes oth
Electronics Forum | Mon Dec 30 12:55:37 EST 2019 | emeto
We saw your profile, which in my opinion looks alright based on the guideline from the vendor. Can you tell us more about the joints that you cleaned? Are they showing nice wetting and nice and shiny finish? How about your stencil thickness? From my
Electronics Forum | Thu Dec 26 17:13:43 EST 2019 | rgduval
Doesn't really look like no-clean to me...typically, no-clean encapsulates the solder joint after reflow, trapping any organics. This looks like plain-old water soluble flux, that cooked a bit too much in reflow. As you noted, it cleaned up with
Electronics Forum | Mon Sep 27 08:52:11 EDT 1999 | Brian
| i had a problem here, during the wave soldering process, we apply a water soluble mask on the gold finger to protect it from contamination. But after washing, there is still some mask left on the gold finger. | Can anyone pls advise is there any pa
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