Electronics Forum | Tue Jun 11 09:31:13 EDT 2019 | relaycz
Very cheap option are adhesive strips. Easy to use and if operator is carefull, there are no spilled components. https://www.steier.de/steierform/Anwendungen/Gurte-verbinden-SMD-Splice-Produkte/TOP-Splice-ESD-gerecht-orange.html
Electronics Forum | Wed Jun 19 01:07:32 EDT 2019 | relaycz
Drop of glue should prevent module from moving, but is not really a solution. What about pad design? Are pads on PCB themselves much larger then the ones on the module?
Electronics Forum | Wed Jun 19 02:42:26 EDT 2019 | relaycz
In my opinion, fault lies in printing or reflow. With printing - it's either too much solder paste or bad print, though I would assume that would be caught. With reflow, it could be that ramp up rate is too high.
Electronics Forum | Fri Jun 21 02:11:27 EDT 2019 | alanyang
Many aspects cause such problem, stencil windows and thickness, thermal pad and crowded PTH vias on PCB, the castellated pad size and pcb pad size. Do you have picture for reference?
Electronics Forum | Mon Jun 24 04:34:49 EDT 2019 | SMTA-David
Yes, I have images but how do I upload them to the forum? I am new here
Electronics Forum | Thu Jul 04 05:24:45 EDT 2019 | kasun_elk
We have some small strips of SMD reels, when we use those reels in Siplace machine we can't identify exact part number of the strips because there is no any connection with reel and the strip. And while unloading reels operators insert wrong art
Electronics Forum | Thu Jul 25 14:32:55 EDT 2019 | bulur
What does flux acid value means in SMD and PTH applications? Is it higher acid values better for each application?
Electronics Forum | Fri Nov 01 08:39:43 EDT 2019 | johnce
At this point, I do not plan to back-fill with nitrogen. I have confirmed that vacuum baking, with the temperature set to 40°C, will result in the chamber %RH being less than 5%.
Electronics Forum | Mon Nov 18 02:44:33 EST 2019 | pate2418
Did you reduce the apertures in the stencil? There can also be very large contact SMD pads. Can be the wrong the thickness of the stencil (thicker than need)
Electronics Forum | Thu Dec 19 03:02:48 EST 2019 | sssamw
I cannot see it's a gull wing lead, but also there's no solder under the lead except the side surface.
