Electronics Forum | Tue May 30 13:50:40 EDT 2006 | Dragan
Hi, I ran into a problem and need a solution. It is a 3cm*4cm*1mm 2 layer PCB (6x6 panel) with a LQFP128 package Microcontroller, a resonator and 2 capacitors. What happens is: When i recieve the assembled pcbs from the assembly plant they wor
Electronics Forum | Tue May 30 17:17:08 EDT 2006 | Dragan
Hi, I ran into a problem and need a solution. It is a 3cm*4cm*1mm 2 layer PCB (6x6 panel) with a LQFP128 package Microcontroller, a resonator and 2 capacitors. What happens is: When i recieve the assembled pcbs from the assembly plant they wor
Electronics Forum | Mon Mar 09 07:29:21 EST 1998 | Tom Mc Grath
Cold Welding I'm presently doing a project on reflow profiling. I came across this expression. Can someone please give me a definition. Best Regards Tom Mc Grath
Electronics Forum | Tue Mar 10 03:01:30 EST 1998 | Pete Sorenson
| Cold Welding | I'm presently doing a project on reflow profiling. | I came across this expression. Can someone please give me a definition. | Best Regards | Tom Mc Grath A cold weld is a joint between two metals produced by the application of pr
Electronics Forum | Fri Dec 15 10:58:32 EST 2006 | pms
Yes we see this also....... It is what they call "cold welding" of the solder paste to the blades...... The solder spheres actually "weld" together...... It leaves streaks on the stencil, not a clean wipe of the stencil....... We have never found
Electronics Forum | Sun Dec 17 08:41:38 EST 2006 | davef
Paul We've seen "cold welding" of solder paste when dispensed improperly. It occurs in the narrow confinds of the nozzle when someone tries to pipe too much paste, too quickly. The friction of all those little solder balls and paste juice fighting
Electronics Forum | Mon Mar 09 10:12:43 EST 1998 | Justin Medernach
| Cold Welding | I'm presently doing a project on reflow profiling. | I came across this expression. Can someone please give me a definition. | Best Regards | Tom Mc Grath Tom, I think what you are referring to is also called cold solder. You have
Electronics Forum | Mon May 13 03:01:23 EDT 2019 | peterchan
Hello, sir. We are a SMT equipment manufacturer from China. We have a hot-press soldering machine that can change your current situation of manual soldering on PCB board. In addition, we have a better reflow oven, the upper and lower two cold tempe
Electronics Forum | Thu Nov 30 21:13:55 EST 2000 | Dave F
Can't find "WS601" on the Alpha site. What is that stuff? So, with nothing to go on, I'll just guess ... Yer probably cold welding the solder particles together. The nozzle size (inside diameter) determines the dot size. * With glue, small dot si
Electronics Forum | Thu Jul 26 09:14:17 EDT 2018 | teresat2
When the PCB is finished, it must be mainly tested. Mark the broken plate of the short-circuit broken wire, or SMT may fix you later. In the case of Mosaic, the same location of the bad packaging together. Next is SMT welding commonly, want to look f
