Electronics Forum | Mon Aug 17 02:50:44 EDT 1998 | Bob Willis
| Have an SRT w/preheat, 18 layer board all copper, 456 BGA needs to be removed and replaced. The manufacturer is Chip Express and during reflow it warps up or down. Causing either opens or shorts on the corners. I was using gel flux with multiple
Electronics Forum | Thu Aug 10 13:16:17 EDT 2000 | Bob Willis
Here is some thing that I wrote a while back on solder beading. First what is a Solder Bead? The term solder bead is used to differentiate it from solder balls. A solder bead is a solder ball but its location is normally constant unlike solder bal
Electronics Forum | Tue Aug 02 15:05:38 EDT 2011 | davef
A couple of points: * Just a nit, 'screens' fell in disuse 10-15 years ago. Old habits die slowly don't they? * Yes, DEK and MPM each hold about 50% of the solder paste printer market and about 4 or 5 others hold the rest. SOLDER PASTE PRINTER EQUI
Electronics Forum | Wed Apr 21 13:52:34 EDT 1999 | Steve Gregory
Technically speaking, there is nothing for me to say. Oh maybe just one thing - to get me back into the fray: Steve, I must say I totally disagree with your assessment of under screen cleaners. I have had nothing but excellent results using the dry,
Electronics Forum | Wed Apr 21 18:58:44 EDT 1999 | Earl Moon
| Technically speaking, there is nothing for me to say. Oh maybe just one thing - to get me back into the fray: Steve, I must say I totally disagree with your assessment of under screen cleaners. I have had nothing but excellent results using the dr
Electronics Forum | Thu Jul 13 22:20:38 EDT 2000 | Dave F
=10 mils larger than lead 3 silk screen legend text weight >=10 mils 4 pads >=15 mils larger than finished hole sizes 5 place through hole components on 50 mil grid 6 no silk screen legend text over vias (if vias not solder masked) or holes 7 so
Electronics Forum | Thu Oct 04 00:05:25 EDT 2018 | gaintstar
Flason SMT chip mounter Reflow Ovens: http://www.flason-smt.com/product/PCB-assembly-line-equipment-SMT-spare-parts-Dek-Motor-188962.html http://www.flason-smt.com/product/PCB-Conveyor-for-LED-Production-Line-SMT-Assembly-Line.html http://www.flason-
