Good Morning! Someday the electronics industry will eventually decide that bright shiny solder joints are not a necessary! If you are soldering to gold finishes you need to make sure that you have enough solder volume to allow the gold to dissolve evenly into the joint AND that your process is such that the time and temperature profile allows this dissolution to take place. You may be able to alter your reflow profile to get a "shinier" solder joint appearance (try some combination of longer/hotter). May I suggest another approach? Using SEM analysis and microsections demonstrate that the solder joint does not have a gold embrittlement reliability risk and then quit looking at the solder joint appearance. Document your materials and process so that anyone who questions the "dull" appearance can see that you have researched the issue and are not inducing reliability problems. Dave Hillman Rockwell Collins [log in to unmask] ______________________________ Reply Separator _________________________________ Subject: Assy: Dull solder joint - Gold Author: [log in to unmask] at ccmgw1 Date: 11/28/96 8:01 AM Hi Technetter, Could anyone tell me is there any way to reduce the gold leaching from a gold plated board. I am having dull solder joint after reflow. I have heard that hot air reflow will have more gold-leaching as compared to Infrared reflow. Please enlighten.. +====================================+ Kong Hui Poh Process/Equipment Engineering Advisor.. Techgate Electronics Email: [log in to unmask] =-=-=-=-=-= -=-=-=-.=.=.=.=.=.=.=.=.=.=.=.=. =.=.=. *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To unsubscribe from this list at any time, send a message to: * * [log in to unmask] with <subject: unsubscribe> and no text. * *************************************************************************** *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To unsubscribe from this list at any time, send a message to: * * [log in to unmask] with <subject: unsubscribe> and no text. * ***************************************************************************