Electronics Forum | Mon Oct 05 06:08:02 EDT 2009 | pengliang
hello, I'm Pengliang,from China job in ASUS computer and working with smt process department.(so I hope to dicuss the process issue analyse and improvement) any issue pls. pass out . msn iD: liang.pung@hotmail.com good luck
Electronics Forum | Thu Mar 30 21:46:56 EST 2000 | Dave F
Reg: This is copy / paste from draft version of IPC 7095 ( issued May 1999 ) ... 7.3 Assembly accept/reject criteria 7.3.1 Voids in solder joint a. Sources of Voids There can be voids in solder balls, or at the solder joints to the BGA, or at the so
Electronics Forum | Fri Oct 12 11:18:57 EDT 2012 | srgbarba
Hi, I want to ask if someone saw the combo process at smt lines for panel array (bot & top per both sides), I just perform some experiments and it works perfectly, and I validate the T hus (Cg/Pa) and no one component were dropped after the 2nd reflo
Electronics Forum | Fri Jan 07 09:56:04 EST 2005 | davef
Electroformed stencil suppliers follow. The describe the stencil production process on their sites. * Aplpha Metals [ http://www.alphametals.com/products/ stencils/pdf/PG_Electroform_Stencils.pdf ] * Chepaume [ http://www.chepaume.com/electroforming
Electronics Forum | Mon Jul 16 10:17:22 EDT 2007 | realchunks
Yes you can use no-lead parts in a leaded process. Your solder joints will be weaker than they once were unless you change your solder paste. You can try to improve this by running a hotter reflow temp, but be careful since your flux was not design
Electronics Forum | Mon Mar 04 17:52:59 EST 2002 | davef
Yes, providing the surface of the via is solderable. * If so, how much paste? => Vias come in various sizes. Boards vary in thickness. So, the amount of paste to fill a via varies. Roughly, you�ll need twice as much paste as the volume of the via
Electronics Forum | Thu Oct 26 10:29:03 EDT 2006 | Mike
First, Voiding under thermal pad is unavoidable(pardon the pun), unless you can find a way to add sufficient amount of solder paste to cover the area, and match that solder volume on your terminal leads. I build HVM qty's of "QFN" components w/ therm
Electronics Forum | Tue May 30 21:09:30 EDT 2000 | Dave F
Dennis: Direct metalization is more of an European phenomena than a US one. Not to say that good things don�t come out of Europe. As background: Direct Metallization. In circuit board fabrication, an alternative to electroless plating makes the
Electronics Forum | Tue Dec 30 09:31:52 EST 2014 | rgduval
I've always approached it like this: Design your processes and perform your work to class three standards, and inspect to the standard that is acceptable. That is, all work should be performed to the highest degree of quality. When the work is ins
Electronics Forum | Wed Sep 26 16:22:44 EDT 2012 | markhoch
*Like* I totally concur. And props on the photoshopped process improvement. I tip my cap to you sir.
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