Electronics Forum | Thu Jun 28 17:05:46 EDT 2012 | davef
Here’s what we seem to know: * There’s a problem with voiding in the solder connections of SMT capacitors * A void is an open area caused by air or process fluid that is trapped within a solder connection * Voids are an allowable condition as long as
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 | Sat Mar 20 06:18:58 EST 2004 | agp
I haven't heard of anybody yet who have done smt and reflow after thruhole and solder wave. Thru hole components usually have low resistence to heat and could easily burn when subjected to the 210deg-245deg.C reflow temperature. For pc boards with co
Electronics Forum | Wed Mar 10 15:09:34 EST 2004 | Jay
You can say "re-flow". It's related with the process. In order to assemble a PC Board containing lots of components such as PTH (Plated Through Hole) and SMT, usually, PTH type packages and components are soldered first using wave soldering process.
Electronics Forum | Wed Dec 09 10:02:10 EST 1998 | Earl Moon
| Does anybody out there have any special insights into utilizing no clean paste in high frequency RF applications? I would imagine there may be some issues with solder balls that would affect functional test (Earl, do you have something for me here?
Electronics Forum | Fri Aug 25 02:23:38 EDT 2000 | kyung sam park
Hi. smtguys Would you let me know the name of company appling the pihr in smt process. As you know PIHR stands for pin in hole reflow.( pin in paste) I just want to know what company apply the PIHR in smt process. I expect the contents of the c
Electronics Forum | Thu Aug 31 00:07:24 EDT 2000 | Ramon I Garcia C
I Kyung: I'm not sure if we are working with PIHR but we insert some pines in a PCB with a pin inserter machine, after that we run this pcb in a screen printer and put over its solder paste, and then run in a chip shooter and then IC placer and f
Electronics Forum | Thu Jun 28 09:57:50 EDT 2012 | mosborne1
blow holes and via holes are almost always caused by moisture and in PTH they could be moisture and improper drilled holes. If you are seeing solder balls next to the parts than I would say you have a reflow profile problem. Are you using any kind of
