Electronics Forum | Mon Jul 12 11:35:27 EDT 2004 | Pierre RICHARD
Here are some answers to my questions after a good research. I also added more definitions that could help understand this esoteric language used in assembly, specially surrounding fluxes and their use. In blue italics are comments and extracts from
Electronics Forum | Tue Jun 29 13:52:32 EDT 2004 | microniks
Where to find detailed information on fluxes? No one seems to know the real difference between Rosin fluxes with colophan, Resin fluxes or synthetic Resin fluxes, No Clean, Low Residues, VOC-Free, Halide-Free, Water Washable with alcohol base, Resin-
Electronics Forum | Tue Jun 29 13:56:27 EDT 2004 | Pierre
Where to find detailed information on fluxes? No one seems to know the real difference between Rosin fluxes with colophan, Resin fluxes or synthetic Resin fluxes, No Clean, Low Residues, VOC-Free, Halide-Free, Water Washable with alcohol base, Resin-
Electronics Forum | Thu Mar 03 11:23:50 EST 2005 | Slow Ride
Generally QC is a different deptpartment than touch-up people. Most touch-up people are just general operators, so to keep their job they always see the solder joint as "not enough". Q.C. people are generally a bit better, but know they may be call
Electronics Forum | Wed Sep 25 06:56:16 EDT 2002 | CH
U may check your profile ramp rate. The flux may evporated and look like cold joint
Electronics Forum | Mon Sep 23 18:11:10 EDT 2002 | steveb
On an assembly reflowed in air saw the same thing: 0201's with a grainular solder joint, but 0402's and above with perfectly formed joints. Reflow profile all within acceptable tolerances. Reflowing in nitrogen solves this problem, but increases t
Electronics Forum | Tue Oct 22 17:23:35 EDT 2002 | Yannick
Hi, I wondering if someone know the anwser to that. I'm using a solder paste 63/37 and on the solder joint we have a tiny little layer or flux who is like crystalin. I try to play with my profile the get it off but I don't get much success. So D
Electronics Forum | Tue Aug 12 15:34:37 EDT 2008 | grics
That is very interesting... I am curious though, why wasn't a plain blind rivet used? You probably can, but personally, I would be not want a solder joint holding the frame and the pcb... Mechanical stress on solder joints often leads to not good re
Electronics Forum | Fri Jun 19 09:45:21 EDT 1998 | Mike Cox
Has anyone had experience with placing BGA on gold plated boards. I thought I read a while ago there was a problem with embrittlment causing cracked joints. If anyone has experience with this your feedback would be great. Mike
Electronics Forum | Wed Jun 28 16:16:09 EDT 2006 | Gman
Good article. Would EDX analysis of the cross-section at the void joints be a good method to determine any plating contamination or solder mask issues?
