Electronics Forum | Tue Jul 07 08:42:49 EDT 2009 | ewchong
kpm, you are probably right. under magnification those two pads show some exposed copper which means that they were contaminated or had insufficient solder paste before reflow.
Electronics Forum | Tue Mar 08 09:29:52 EST 2011 | thanh
i don't see why it was insufficient. if you want more paste, i would increase by 10-15% aperture,and maybe double prints for printer.
Electronics Forum | Tue Jun 10 21:15:01 EDT 2014 | comatose
We had a similar problem once, it was due to insufficient v-score depth. While waiting for remade PCBs we would run an exacto knife along the score lines prior to depanel to cut a little deeper. Not ideal for sure, and not fast, but it worked.
Electronics Forum | Tue Feb 24 16:40:54 EST 2015 | duchoang
Could you show us the reflow profile and 0402/0201 pictures? I have had the same situation before just because insufficient solder paste ( Specially on 0201) and maybe not enough heat reflow profile.
Electronics Forum | Mon Oct 12 14:30:58 EDT 2015 | duchoang
Hello Eniac, 1/- Insufficient solder paste, check your print (Printer/Stencil). 2/- If you've got good paste deposit, that could be contaminated pads causing poor solderability. Good luck.
Electronics Forum | Tue Oct 23 17:16:57 EDT 2018 | reckless
Will it not work for soldering defects (solder bridges, shorts, insufficient solder, solder void) or components defects (lifted lead, misaligned component)?
Electronics Forum | Mon Sep 23 02:06:06 EDT 2019 | sssamw
You need thermal couple at the location where insufficient solder occur, it would tell you the true story.
Electronics Forum | Wed Mar 10 16:48:13 EST 2021 | rsatmech
Below list based on my observations. Nozzle block Sensor block Insufficient issue in printing Solderability issue due to fod
Electronics Forum | Tue Aug 15 17:17:26 EDT 2023 | emeto
This one picture would help us so much to assess. Step stencil to 6mil for the connector area.If this doe not resolve it, start thinking about part contamination, insufficient heat in reflow profile and a few other
Electronics Forum | Tue Aug 22 15:24:08 EDT 2023 | grayumm
Evtimov, here is a picture of what we are seeing. After evaluating with the IPC-A-610 book it looks like we are getting an insufficient Heel Fillet Height. I will add a picture of an example. UPDATE: i cannot figure out how to add a picture to this m
