Electronics Forum | Mon Dec 06 19:30:23 EST 2021 | duchoang
OSP finish is the big issue here. You almost can not get 100% coverage solder on OSP with 1 over 1 aperture stencil. Reconsider solder coverage requirement in this case. Check your peak temp in profile may help a little.
Electronics Forum | Tue Mar 01 16:36:43 EST 2022 | joshsvoboda
We are fairly new to selective soldering. I would like to find out if there is an IPC PCB design standard to allow for selective soldering.
Electronics Forum | Fri Jun 10 19:05:23 EDT 2022 | llawrence
Overprint, that is putting extra solder on with the stencil that is even further out from the pads, with the idea that it will suck that solder up during reflow? I could give that a try. Are there any general recommendations when overprinting? And wh
Electronics Forum | Mon Jan 23 21:45:40 EST 2023 | stephendo
Have you looked at simple solder fountains? If it is just simple connectors that might be all you need. Or maybe a small wave solder machine?
Electronics Forum | Mon Jul 17 01:45:32 EDT 2023 | hazira1991
Hello, Im currently having BGA solder short issue which happen only at the center of the BGA during fresh production run. During rework using SRT also i did encounter the same solder short issue. Kindly provide your thoughts on this as how to appr
Electronics Forum | Tue Jul 18 00:24:10 EDT 2023 | stephendo
Those photos also look like delamination. The balls are smaller where the bridging is. There isn't more solder. It's that the solder is somehow squeezed together. Check the BGAs after removing to see if they do have a bulge. Maybe the pcb is flexi
Electronics Forum | Thu Aug 31 19:48:32 EDT 2023 | daniel_stanphill
Your post leads me to believe you always solder and flux each component individually, not in series. I have had great success fluxing the entire board, and then soldering. Maybe the cycle time would not allow for this method but that is almost always
Electronics Forum | Tue Aug 31 17:36:36 EDT 2004 | davef
NO-LEAD COMPONENTS WITH LEAD SOLDER ISSUE: We agree with Russ. We've dicussed this several times on SMTnet. For instance, look here http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=25394 LEAD COMPONENTS WITH NO-LEAD SOLDER ISSUE: We disa
Electronics Forum | Tue Feb 06 18:19:30 EST 2001 | davef
Now that's surprising that your board fabricator would say the mask was cured properly [without even inspecting the boards]. I wonder if they can backup those BOLD words when testing your boards with the webbing problem. The reason you can�t find t
Electronics Forum | Tue Sep 07 20:46:55 EDT 1999 | Jeff Ferry
| | | My company is starting a prototype. The chips that will be used appear to be very sensitive. The vendor part number is Neta-40-2. | | | My question is what solder temp should be used for this part? | | | Any advice is appreciated. | | | THX. |