Electronics Forum | Thu Jun 25 11:11:13 EDT 2009 | bruna
Hello, I want to hear some experience about selective soldering for PCB using nozzle plate and screens Do you have solder defects? bridges and insufficient soldering? How do you combat that? and about the screens you have good quality? What is the f
Electronics Forum | Fri Jun 29 12:47:25 EDT 2012 | deanm
We are experiencing widely varying First Pass Yields for selective soldering. Some boards are near 100% while others are less than 50% depending on the pitch and general complexity of the board. Question: If you are running 100 boards through your s
Electronics Forum | Thu Apr 14 13:49:34 EDT 2022 | winston_one
Thank you for reply, Stephen. No, As I wrote it was leaded process. I heard that it is possible with lead free solder at higher temps an dwell time. At NPL Defect Database I've find this case wich looks exactly the same: http://defectsdatabase.npl.co
Electronics Forum | Thu Apr 14 15:27:05 EDT 2022 | ppcbs
If it was ROHS I would suspect copper migration. In my experience an acceptable copper finish should last up to at least 6 reflow cycles. If you have bubbles or blow holes in the solder joint, that is a sign of voids in the walls of the copper barre
Electronics Forum | Tue Dec 11 12:29:57 EST 2012 | deanm
Thanks for the comments so far. The smallest nozzle I've tried is a 4mm, which is what Pillarhouse used on this board to provide a sample. I tried this but wasn't as good as the 6mm. I've soldered the same connectors on a different board using a 10mm
Electronics Forum | Fri Apr 28 10:50:26 EDT 2017 | emeto
Hello experts, Here is my problem: I have a board that has smt parts on one side and TH parts on the other. We designed special pallet for wave, but the pallet itself is 15mm thick, so we are still seeing some defects. Have any of you tried to find
Electronics Forum | Sun May 09 22:56:14 EDT 2004 | snehal acharya
hi everybody, can anybody give the manufacturer's name of good selective solder M/C. Snehal Acharya.
Electronics Forum | Mon May 17 08:44:58 EDT 2004 | solderpro
Vitronics or Ursa
Electronics Forum | Fri May 21 11:20:42 EDT 2004 | Cal
We actually use a solective soldering fixture for our wave soldering process. cal
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