Electronics Forum | Tue Jun 06 14:31:42 EDT 2000 | Jeff Sanchez
I have 25#'s of bismuth in my shop. I wanted to add some to my 63/37 till it was eutectic. This would allow me to lower the waves temp. Can I do this and still meet standards? Also would it make the solder joints to brittle and would discoloration be
Electronics Forum | Fri Sep 12 22:57:13 EDT 2003 | Dean
What is the surface finish of the PCB? Tin? Imersion Silver? What flux is used in wave solder and / or SMT? I have much experience with silver migration and tin wiskers. Both can disappear during a reqork cycle. Both can be extremely difficult
Electronics Forum | Tue Jun 06 14:34:22 EDT 2000 | Charles Harper
Please refer to prior answer recommending contact with Dr. Jennie Hwang.
Electronics Forum | Fri Jan 10 11:36:03 EST 2014 | rgduval
One thing you could check/monitor is the temperature in the pot/wave. As boards run across the wave, they will cause fluctuations in the wave temperature. The heaters should hep with minimizing this; but, if you're running a lot of boards in quick
Electronics Forum | Thu Jan 09 19:55:14 EST 2014 | padawanlinuxero
Hello! I have a problem with one of the products here, we use a pallet to run the board on the solder wave, when the board gets solder and you inspect the board you notice that for some reason the first pcbs that touches the wave are ok, even a litt
Electronics Forum | Wed Jan 15 21:55:41 EST 2014 | padawanlinuxero
we do that and there's a variation on the solder temp. sometimes around 10 degrees, we have 2 solder pallets that are run in intervals of roughly 3 1/2 minutes a part (the time that take the operator to put all 3 terminals in a 42 pcbs per board, and
Electronics Forum | Mon Jan 13 18:21:54 EST 2014 | vwhipple
A little confusion here. Are you running several boards in one pallet and the last boards are looking poor or is the issue getting worse as the day progresses (like as the pallets get warm)? - If it is the last boards in the pallet, then you may wan
Electronics Forum | Tue Jan 21 13:51:19 EST 2014 | rgduval
Armando, Is the problem in the same spot on the board with every run? If so, there might be something about that particular location that is part of the cause (ie. ground or power plane connection). It sounds like you're seeing blow holes, or insu
Electronics Forum | Tue May 26 06:56:40 EDT 2009 | xinxi
Hi! From your post, it seem like the wave did not really touch the component. You probably need to get the both wave height correct and that it hits the component.It is normal for solder to come through the PCB when using chip wave. The through-hole
Electronics Forum | Wed May 27 11:54:29 EDT 2009 | allwave
Armando, Make sure chip wave is pumping evenly across. These TD machines require a lot of maintenance (deep cleaning)to ensure all the holes on nozzle are open... My two cents, George
