Electronics Forum | Mon Nov 25 16:46:17 EST 2002 | timreisenleiter
Any experience with the Conceptronic freedom-2000/HGR2000 system? I have the opportunity to pick one up for about 15k USD. The system new is approximately 51K, putting it into the high end of BGA/CSP/chip-scale rework systems, the specs. are really h
Electronics Forum | Fri Dec 13 18:47:22 EST 2002 | stefwitt
In theory you are right, but the camera CCD chip has only small squares as pixels. The edges of the circle lit the pixels only by a certain percentage. In order to find the edges, you will have to use sub-pixels or greyscales. A circle is also prone
Electronics Forum | Mon Dec 30 01:31:36 EST 2002 | MA/NY DDave
Hi I think you already have the answer. It isn't the same as the true comparator of yesteryear, yet YES, some of the assembly machines have visualization post placement, compared to a golden board or dimensional images imported into the software.
Electronics Forum | Fri Jan 03 08:19:24 EST 2003 | emeto
hi, for more info try one of these if you missed some: http://www.amkor.com/ http://ap.pennnet.com/ http://www.asymtek.com http://www.smta.org/ http://www.semiconductor.net/ http://www.smtinfocus.com/ http://www.elis.rug.ac.be/ http://www.kns.com
Electronics Forum | Thu Feb 27 09:40:19 EST 2003 | jseagle
Hi, I am looking for opinions on closed-loop inline washers. We use water-soluble paste and flux, most of our boards are double-sided, and our finest pitch is 16mil, but we will be doing BGA, uBGA, and possibly flip chip in the future. What would
Electronics Forum | Fri Mar 28 22:01:00 EST 2003 | MA/NY DDave
Hi Yes I agree, yet this subject is about Tombstoning and oven profile or even oven working correctly across the entire product is a sub-set of how one gets those little chip babies to sit and stay where they belong. Flat and Heeling like their mast
Electronics Forum | Tue Mar 11 11:22:38 EST 2003 | slthomas
Is a water-soluble flux based paste an option for the bottom side? Then you could wash the residues from the board before wave. That's the only way we've tried that process. The difficulty we had was with some disturbed joints, apparently from s
Electronics Forum | Thu Apr 10 10:54:34 EDT 2003 | pjc
It will vary by placement machine mfg. and type. I had 4x Fuji CP3 (turret chip-shooter) and 2x Fuji IP2 (split axis general app-fine-pitch)and tracked component shrinkage at 0.05%-0.5% on average. Above 0.5% triggered maint. & process eng. response.
Electronics Forum | Wed Jun 11 15:59:11 EDT 2003 | stepheno
I've never worked on that machine but I won't let that little detail stop me from commenting. Are your nozzles clean, and have you checked your vaccuum levels? On every machine I do have experience on, management doesn't allow time for proper mai
Electronics Forum | Thu Aug 28 20:33:45 EDT 2003 | yukim
Tod, I am a user of 4797 and we too have this problem. A question regarding nozzles. How could I check whether they are worn-out? Only in vision check? We have worked for about 2 years without changing them, but worked just one shift.
