Electronics Forum | Mon Mar 24 11:52:43 EDT 2014 | davef
I agree with Jim. Don't do it!!! The tech from SparkFun [on the YouTube video] is giving you his hobbyist trick, which: * For hobby prototyping will work just fine. * For production work, the process is not in control and should not be considered.
Electronics Forum | Mon May 05 11:35:00 EDT 2003 | Grant
Hi, This is an interesting point. I use Koki paste from Japan, and it's wonderful, however what properties of solder paste would make it "anti tombstone" paste? How does led free effect tomb-stoning? That would be interesting to know. We might go
Electronics Forum | Mon Mar 29 07:21:51 EST 2004 | jdumont
We are also having the same problem here. I was told earlier that it could be a problem with the solder mask during the raw board manufacturing level but then I noticed that the problem was only surfacing on boards that went through the wave. As far
Electronics Forum | Fri Mar 17 07:42:51 EST 2006 | vicknesh28
Copper is the base material for the lead. It's tin/lead plated. I finally got profile. Here are the parameters" Peak : 219 Max (+) Slope : 2.29 Max (-) Slope : -1.94 Time above 200 deg. C : 50s Time 140C - 160C : 126s Additional info : Stencil thic
Electronics Forum | Wed Jul 19 10:57:25 EDT 2006 | Rob
Depends on a number of things - such as type of oven, type of components, if you are washing the boards or not, etc. Assuming nothing special, no clean, I would try the following (in that order): Koki: S3X58-M406L Almit: LFM-48 Indium: 5.1 Cheers,
Electronics Forum | Tue Mar 25 02:58:24 EDT 2014 | molder
ok.. thanks you so much.. I will buy new dispenser siringe, and I try to rework... I have a questions on desolder and solder a socket 1366 intel on motherboard. I have a rework station Honton hot air and tornado infrared, but i don't know a temperatu
Electronics Forum | Fri Aug 24 01:25:58 EDT 2018 | cupet
Hi everybody, please advise in case of soldering problems after the reflow soldering. The problem occurs randomly at different locations on different PCB's (not the complete surface of the board). These places are very difficult for rework. Could you
Electronics Forum | Mon Mar 24 20:30:01 EDT 2014 | davef
The "correct" answer is: Use the tests and methods that you used to qualify your solder paste in the first place. That sounds good but might not be all that practical for practicing assembly-types. Here's something that's not as good, but will give
Electronics Forum | Tue Nov 05 09:57:45 EST 2013 | cuperpeter
Hello All, We have a problem with dewetting of solder paste. Problem is most visible on the pads without components (see attached pictures) and occurs randomly, 20% of PCB's. Pcb supplier sent us a cross-section of pads with thickness of Cu, Ni and
Electronics Forum | Wed Aug 26 05:24:42 EDT 2009 | ghepo
Ok Eric, finally we know that the problem should be the PILLOW (sincerely, your photo is not very clear) and not the crack of the joint. There is a big difference on the failure mode of the two defects... If the problem is realy a pillow I only ca
