Electronics Forum | Sat Nov 23 06:28:23 EST 2002 | Alistair Johnston
I work for A PCB manufacturer and have a request to plate a board with Gold to BS4292. We dont hold this spec and wonder if anyone can explain what is entailed in this spec.
Electronics Forum | Thu Nov 28 09:42:51 EST 2002 | Claude_Couture
MPM SP200 are nice. Visual alignment with cameras. Get the one with dual head if you want metal squeegees. We have produced boards with .020" fine pitch with very good results. Unfortunatly, MPM does not sell those anymore, so you have to hunt for a
Electronics Forum | Fri Dec 06 18:13:15 EST 2002 | slthomas
We only have solder balling problems in the interface of the pcb with the selective soldering pallet. All other boards (single, and double sided glue and waved alike) are fine, so I'm not thinking this is going to follow the normal path for resoluti
Electronics Forum | Wed Dec 04 09:46:15 EST 2002 | stefwitt
In a new design project, I would like to attach electronic components to a board using either sonic or resistance spot welding. Anyone out there, who could provide me with actual parameters, like frequency, current and equipment used?
Electronics Forum | Mon Dec 09 11:36:23 EST 2002 | gswable
Mike wrote : "Personally, I would not accept an incoming board that measures more than 0.5 �g/in of NaCl." Would your recommendation be valid for an IONOGRAPH tester ? Did you perform any reliability study that you can share that drove you your conc
Electronics Forum | Wed Dec 11 11:11:59 EST 2002 | Randy Villeneuve
Lead in pencils is conductive, so if dust or lead particals were to break off (which they could easily do) this could cause shorts on the board, etc. Its common practice not to use lead pencils in electronics manufacturing.
Electronics Forum | Fri Dec 13 12:12:21 EST 2002 | Hank Sybesma
We are being asked to begin rework processes on boards that use lead free solder. Does anyone have any experience in the service field working with lead free?
Electronics Forum | Thu Dec 19 13:23:11 EST 2002 | gramsey
Now, this is good solid advice. If following this advice does not help there is something wrong with 1. the paste (reology failure) 2. the stencil (rough walls) 3. the board (bad design or fab) (in order of likelyhood)
Electronics Forum | Mon Dec 16 15:20:29 EST 2002 | sueph
Randy, are you baking initially for surface mount? These boards I'm talking about are just thru hole, so there would not be any bake between baking for part marking and wave solder.
Electronics Forum | Mon Dec 16 17:38:56 EST 2002 | davef
Baking boards in a nonvalue added activity. Quit doing it!!! As a routine production activity, it is either: * Totally unnecessary ... OR * Band-aid to cover for problems in fabrication, purchasing, or storage methods. Search the fine SMTnet Archi