Electronics Forum | Mon Nov 20 16:56:19 EST 2006 | russ
Ahh the old Kester dry product EM907 just had major thicjener issues, we wer quailifying the kester product and could not get out of tube. needless to say it failed the qual. I was informed by Kester rep that all lots were recalled for this? was y
Electronics Forum | Wed Dec 06 16:14:25 EST 2006 | realchunks
Assuming you meant 38 percent humidity - I would have to say your environment is only part of the problem. When you experience this problem, is because the paste has set idle for a period of time? If you knead the paste does the fine pitch print OK
Electronics Forum | Tue Nov 07 18:18:03 EST 2006 | Andrea
I am wondering how to move from hand soldering our ceramic caps to doing a reflow type process. The reason for the change is too many cracked ceramic caps. I have asked our vendors to assemble our boards via reflow but because of our hardware (swaged
Electronics Forum | Tue Nov 07 22:41:48 EST 2006 | davef
You are correct that hand soldering ceramic capacitors often causes them to crack. They do not take thermal shock well. You might be able to reduce the amount of cracking by following the rework repair guidelines discussed in the fine SMTnet Archiv
Electronics Forum | Wed Nov 08 08:48:45 EST 2006 | markhoch
Okay, here's the deal-e-o....I need to find the Nation's Best BGA Rework Specialists. I have 50 PCBs each measuring about one square inch, that need to have a BGA Ring Socket Removed, eight capacitors removed, and a new ring socket installed. Sounds
Electronics Forum | Wed Nov 08 15:22:54 EST 2006 | rgduval
Anyone have any experience with Displacement Soldering? We just came across a benchtop displacement soldering system, and I'm wondering how effective it might be for me. We're currently looking at a "best" solution for us right now for lead-free
Electronics Forum | Fri Nov 10 17:49:24 EST 2006 | rgduval
No, not exactly. It's sort of a one board wave/pot assembly. Looks like you put a board in the chamber, it has programmed preheats etc, and when the preheat time has been reached, the solder is raised up to the board, the board is soldered and the
Electronics Forum | Tue Nov 14 04:52:57 EST 2006 | Loco
To make it even more compicated, you have CTE before Tg and after Tg, altough the after Tg is way more important, because the expantion ratio will be much bigger, a pcb supplier will usually give the before Tg value. To come back to the delamination
Electronics Forum | Wed Nov 15 09:36:27 EST 2006 | Board House
Hi AJ, The biggest mistake in the industry today is documentation for lead free assembly required product. We are still seeing prints coming in saying Lead Free / High TG FR4. When in reality standard FR4 170 Tg. material is considered High Tg. and L
Electronics Forum | Wed Nov 15 13:44:32 EST 2006 | sliebl
Paul, That's what I thought you were going to say. I can do the same thing with my Contact machines, although I do not have feeder handling carts to pull entire banks of feeders, it would have to be done individually. Even though we are a small to mi
