Electronics Forum | Mon Apr 29 10:42:47 EDT 2002 | Jim M.
I had problems with white residues on both WS609 and WS 3060.The WS 3060 turned out to be a carbonized material.The composition after analysis (Energy Dispersive X-ray spectrum) turned out to be tin,tin,phosphore and cloline and tin. Alpha also have
Electronics Forum | Thu Feb 09 20:12:51 EST 2017 | imarkl
Any advise about dewetting defect occurrence during 2nd pass reflow. Commonality on affected PCB having water marks near affected pad(s). Elemental composition found on affected pads without solder paste are Silicon and Sulfur. As well as in pad with
Electronics Forum | Tue Apr 07 14:37:14 EDT 1998 | Chrys
Be careful about the material you choose. All the materials out there are basically glass-filled epoxy composites, but they are different blends with different fillers. Some of them have carbon in the matrix to make them ESD safe, but it also short
Electronics Forum | Wed Mar 16 06:46:59 EST 2005 | -=Verm=-
Hi lads long time no post... I have an issue with a PCB, its a PCI card that we manufacture for a customer of ours. The customer is seeing a problem with contact on a PCI card with the motherboard, the PCI card is removed from the board wiped and th
Electronics Forum | Mon Jan 31 12:24:24 EST 2000 | Dave F
Robert: Several points: 1 Dross is a mixture of various things with no "fixed" composition: � The obvious things are metal oxides mixed with metal and this can vary in color with temperature and composition - remember some intermetallic oxides form
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