Electronics Forum | Sat Jun 17 09:09:15 EDT 2000 | Chrys Shea
Contact the adhesive manufacturer, or their website. Most adhesive suppliers offer two cure options - one with a belt oven profile and one with a box oven profile. The belt oven is usually a ramp and plateau of 120-150C for approx 2 minutes. The b
Electronics Forum | Fri Mar 30 07:24:43 EST 2001 | pteerink
Have you had bad experiences? We have a paste checker on line, and all components are verified at receiving and again when loaded on the machines. The purpose of AOI ( for us anyway ) is to reduce the time spent after reflow visually checking the b
Electronics Forum | Mon Jul 30 10:47:29 EDT 2001 | Keith E.
I am also interested in one of Anthony's questions....How is this different from other "similar" products. After having some experience with similar technology, I ask.... 1. How does your initial set-up address the fact that you are conforming to a
Electronics Forum | Fri Sep 24 09:48:28 EDT 1999 | Shane
I am developing a DOE for evaluating SMT adhesives. I would like to evaluate 3 different vendor dispensing adhesives. I currently have the Heraeus PD955M and the Loctite 3609 and 3618 selected for evaluation. I would like to add another manufactur
Electronics Forum | Wed Sep 16 10:35:45 EDT 1998 | John McMasters
| | Has anyone used Fuji's rubber tip nozzles for the IP3? Are they O-ring type or suction cup? I'm having trouble picking up Ompacs due to the top of the part not consistently being flat. Any actual experience with these $1100 nozzles would be app
Electronics Forum | Wed Jun 10 14:48:12 EDT 1998 | Chrys
| | Does anyone have any info./studies on what the percentage or PPM defect rates are for each part of the typical SMT process. | | Example: | | Screen Print = 45% of total defects | | Component Placement = 25% of total defects |
Electronics Forum | Mon Mar 16 20:00:47 EST 1998 | Jon Medernach
| Maybe I'm doing something wrong, but it seems to me that The Forum takes a lot longer to open up now. It also takes a lot longer to get back to the main Forum page, after reading an individual message, and hitting the "BACK" button. What's up? Is
Electronics Forum | Fri Sep 28 09:30:07 EDT 2001 | kmorris
Just had a similar phenomenon 2 days ago. May relate to your issue --- or not. Like you, I did a once over looking for mechanical obstruction & couldn't find any. Ran a thermal profile on the offending PCB & all checked out. Looked in end of oven
Electronics Forum | Wed Jun 12 08:24:03 EDT 2002 | davef
Tough. 0402 capacitors are more prone to tomb stoning than resistors. Tailor your process to the 0402 and let the other stuff fall where it falls. Search the fine SMTnet archives for discussion on tomb stoning. Consider: * Changing paste. * Apply
Electronics Forum | Thu Dec 12 09:21:42 EST 2002 | blnorman
What we did: *Slump-dot diameter and height as a function of time *Print Speed-Vary speed, measure slump and missing/defects *Green Strength-We quantifiably measured tack vs time and we placed components and measure skew by SVS *Cure profile sensitiv
