Thank you very much for your valuable suggestion! We will solve it as soon as possible!

PCB Assembly Service

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In assembly the bare board is populated with electronic components, called a "printed circuit board assembly" (PCBA). In through-hole technology, the component leads are inserted in holes surrounded by conductive pads; In surface-mount technology (SMT), the component is placed on the PCB so that the pins line up with the conductive pads or lands on the surfaces of the PCB.

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Lead Free Reflow
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I have an issue where our production team has ran the wrong reflow profile on a no lead product where Indium NC SMQ-230 no lead paste has been used. You can still see the grains of solder after reflow. What I am look for is if anyone has any recommendations on how to get this no lead solder to reflow again after it has already been through our reflow process. I have already tried running on panel back through the reflow oven and saw very poor results. This was believed to be from the lack of flux. Next I tried a liquid wave flux on the panel and then reflowed. Again poor results were seen. Any ideas of suggestions would be greatly appreciated. Thanks so much!
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Neil Herbert

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