Electronics Forum | Sat Jul 28 10:51:38 EDT 2001 | nifhail
I'm curious over what would happen if we continue to use the WS paste when dealing with uBGA. Definitely the cured flux under uBGA package couldn't be cleaned/reached and as I understand correctly they are corrosive. if that so, how long do you guys
Electronics Forum | Wed Aug 22 21:11:38 EDT 2001 | ksfacinelli
We have utilized the ERSA Scope for over one year. Our experience is that it is an excellent product in evaluation of problematic assemblies. It takes a little bit of time getting dialed in on the equipment but once you have it mastered it can see
Electronics Forum | Fri Aug 03 15:20:18 EDT 2001 | stmerkt
The press release attached below provides some insight into the direction Tyco is planning to head with the Automation Group. For Immediate Release Tyco Electronics Expands Automation Group; Offers Quad Systems Assembly Equipment Quad Systems
Electronics Forum | Tue Feb 08 14:49:23 EST 2000 | Travis Slaughter
I have never tried this and wouldn�t really even want to consider it. Epoxy generally cures at around 160c in a fairly short amount of time, solder paste requires much more time and a peek temperature of about 210c or more in some cases. Curing you
Electronics Forum | Tue Feb 01 04:11:58 EST 2000 | emmanuel
I am to assembly a power SO on the top side of a double side board. My designer has implemented a lot of thermal vias in the heat sink pad of this component. The problem is that i need to prevent the solder cream from polluting the bottom side of the
Electronics Forum | Fri Jan 14 16:21:42 EST 2000 | Dave Chapman
We are having mid chip solder balls on chips and resistors. Seeing the problem on 80% of the assemblies we run. Anywhere from 1 to six of the balls per board. We have slowed the oven down, increased the pressure on the screenprinter to get less paste
Electronics Forum | Wed Jan 05 15:00:23 EST 2000 | Brian E. Steelglove
Dear Jacob, I have a company that makes a really cheap but great depanelizing machine and one to get rid of the tabs on a routed FR 4 board. I saw them at the assembly expo in Chicago. The cost is under 2,000 dollars and works well. I think it mig
Electronics Forum | Tue Jan 04 08:40:24 EST 2000 | g cronin
don't you just love those design guys sometimes, this is an issue that pops up every once in a while with us too. We have a couple assemblies that have hundreds of vias on pads. We have tried and had some sucess with: increasing squeegee pressure,
Electronics Forum | Tue Jan 04 19:55:46 EST 2000 | Rob Thomas
Hello Yosef, non woven aramid reinforced pcb's are used where is a need for low CFT (coefficient of thermal expansion). Traditionally aramid pcb's were used in military applications in order to reduce the stress/failure rate of solder joints during
Electronics Forum | Thu Dec 23 09:27:30 EST 1999 | mike d
Good morning. I am currently in the process of validating our quoting process in comparison to what our colleagues are doing. If anyone could let me know what is the average cost per component for their smt operations I would really appreciate it.
