Electronics Forum | Fri Aug 01 00:22:46 EDT 2008 | fowlerchang
Pattern design, paste volume,printing misalignment, place misalignment,reflow process include N2 usage. All the factor above can make tombstome happen. And the most important factor is placement misalignment except design issue. But pls check the sol
Electronics Forum | Thu Apr 30 13:09:53 EDT 2009 | scottp
One factor I see missing is separation speed (or snap off speed). I've run experiments with different pastes where it was the biggest factor in standard deviation of print volume for small apertures.
Electronics Forum | Thu Jun 14 22:50:45 EDT 2001 | gregH
Hi, I read an article that says "Flux selection usually depends on the following factors": a) Solderability of pcb base metal or coating b) Corrosivity of vapours and residues c) electrical resistivity of residues d) Ease of removal of residues e)
Electronics Forum | Thu Apr 18 17:29:00 EDT 2002 | dason_c
The industrial standard is follow the R.O.S.E test as a guideline per J-STD-001 and the limit is 10ug/sq. inch. Different tester with different equivalent factor with the ROSE and you can refer back to the manual, the Zero Ion tester with equivalent
Electronics Forum | Sat Feb 11 18:33:36 EST 2006 | KEN
One factor everyone overlooks is that furnace and external T/C wires are (generally) not calibrated. Unless you are sending your wires to a lab for NIST characterization your T/C wires are NOT calibrated. They (new wires)operate within a specifie
Electronics Forum | Wed Nov 16 17:18:42 EST 2022 | emeto
Volumes are not the only factor here. You might have low mix and low volume, but high complexity. Machine you pick based on the most challenging components you have to print/place/reflow. If boards are simple, than your level of expertise is importan
Electronics Forum | Wed Mar 07 02:34:10 EST 2001 | Cosine Theta
Strange? Can u explain why magnetized squeegee be a factor, not to mention rusty squeegee?
Electronics Forum | Thu Jun 22 11:25:52 EDT 2000 | Brian
How does energy efficiency factor into the manufacturing process?
Electronics Forum | Mon Jul 27 08:42:13 EDT 1998 | Justin Medernach
| Hi, good friends | I found this site is so wonderful to learn SMT techniques meaningfully. | We now employ 3 Fuji GL-541 dispensors and raw material with Soma IR-120. but we found glue string casually. From my experience from trouble-shooting the c
Electronics Forum | Fri Jun 25 15:48:55 EDT 2004 | tcp
The potting definitely is a factor in fracturing the grainy joints, but does not seem to damage a "good" solder joint.
