Electronics Forum | Sat Apr 21 14:50:17 EDT 2012 | edmentzer
We are using SN100C in both our wave and selective machines and have very good results. We also using it for ROHS hand soldering. It flows better than SAC305, the joints are shinny just like Sn63/37. We are looking into using SN100C as our paste b
Electronics Forum | Thu Jul 25 08:58:22 EDT 2019 | Matt
Hey all, i'm hoping to get some feedback from the community on baking process versus a dry box. current process we have for rework of PCBs is to perform a 16 hour bake cycle on hardware before BGA rework is performed. however this process is ineffi
Electronics Forum | Tue May 09 15:02:46 EDT 2006 | Chris (2)
Hi Chris, We have only produced a few RoHS assemblies as of yet but we have not had one tombstone so far (knock on wood) I'm hoping that will not become a problem. We have enough of them now! Good Luck Chris
Electronics Forum | Thu Mar 15 13:39:06 EDT 2018 | gregp
Impact is the instantaneous force at the time the component first reaches the PCB. F=M*a....so the acceleration is the key factor. If charted on a graph it would look like a spike...higher force for a short duration. The placement force is typical
Electronics Forum | Mon Jun 19 10:30:30 EDT 2023 | smtusa
Jet printing can reach 80um, whereas contact dispensing is 0.3mm I believe. 0402 pads are 0.6x0.5mm.
Electronics Forum | Sat Jul 28 10:51:38 EDT 2001 | nifhail
I'm curious over what would happen if we continue to use the WS paste when dealing with uBGA. Definitely the cured flux under uBGA package couldn't be cleaned/reached and as I understand correctly they are corrosive. if that so, how long do you guys
Electronics Forum | Wed Apr 10 04:08:05 EDT 2024 | sophyluo1985
It's really cool that you have such an idea. In fact, many companies now have changed their traditional thinking. Maybe 20 years ago, people thought that used things were bad. In fact, in the electronics manufacturing industry, the quality of our pro
Electronics Forum | Tue Feb 03 13:39:08 EST 2009 | grics
Good morning Jamie. I work at a CM and can offer some input on process flexability. I do not have any data on how reliable the coating is but I can say that they are both very difficult to control. Will you be selective coating or full coating? Ho
Electronics Forum | Tue Feb 09 16:53:06 EST 2021 | SMTA-64387083
The size of the pad changes among the two. A solder mask defined pad will always be larger than a copper defined by your mask expansion setting. This will affect paste volume, if your standard paste aperture is designed for copper defined pads you m
Electronics Forum | Fri Mar 08 03:21:18 EST 2013 | sdhmuni12
Can a ROHS PCB with ROHS solder paste can be cleaned in same basin/sink when Non-ROHS solder paste PCB are cleaned? Any detail procedure or cleaning technics for NON ROHS Solder Paste PCB VS ROHS Solder based PCB?
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