Electronics Forum | Mon Feb 13 10:41:14 EST 2017 | dyoungquist
Could be that your temperature ramp up rate is too fast. This could cause the flux in the solder paste to burn off too rapidly. When that happens, it can expand as it heats up and burns off, causing the solder to get spread out from the pad.
Electronics Forum | Sun Feb 12 22:52:20 EST 2017 | ltchsze
Hi fellow professionals, Wondering whether anyone has experience with solder splashing from component terminal. Have identified the source using the component without printing solder paste on PCB. Wondering the root-cause of the solder splashing fr
Electronics Forum | Tue Aug 25 20:33:31 EDT 1998 | Karlin
| | | | Hi, | | | | Does anyone has experiences in reflowing Ceramic BGA and found solder wicking ? Solder wicking has the syndrome that solder being wick from the pad and ended up in the leads. | | | | We have rule out the possibility of not printin
Electronics Forum | Wed Dec 07 11:54:37 EST 2005 | russ
Would you by chance be soldering copper to aluminum?
Electronics Forum | Wed Dec 07 12:28:37 EST 2005 | PWH
I have seen problems similar to this caused by too high concentration of cleaning solution used in ultra-sonic cleaning process. If cleaning solution is used, make sure it is compatible with solder process. Also, improper mixing of fluxes and solde
Electronics Forum | Wed Dec 07 00:44:31 EST 2005 | arnold
were having a problem on the units after soldered. after few hours or days the soldered wires has green decay. what does it cause. how can i prevent this.
Electronics Forum | Wed Dec 07 07:20:02 EST 2005 | davef
We need more information about the situation. For instance: * Describe the green residue * Talk about the distribution of the problem, including a single lot or from various lots and over components and component types on the board * Tell us about t
Electronics Forum | Mon Dec 26 23:19:29 EST 2005 | arnold
is there any term called on that corrosion or green contamination?
Electronics Forum | Tue Jan 03 08:23:08 EST 2006 | davef
Look here: http://webexhibits.org/pigments/indiv/overview/verdigris.html
Electronics Forum | Thu Dec 08 18:59:04 EST 2005 | KEN
Is this a wire dip tinning process? If yes, then your flux is probably trapped under the insulator, causing corrosion. BAD BAD BAD (hopefully you don't make wire harnesses for air planes or passenger trains). More info please.
