Electronics Forum | Tue Aug 18 22:22:43 EDT 2009 | comatose
Assuming you want to run 8 hours a day and 5 days a week, you need a sustained throughput of 2.5k components per hour. With fine pitch, futzing around, setup, etc you should really look for machines rated in the 4k to 5k per hour range. That's not sc
Electronics Forum | Wed Mar 03 14:16:59 EST 2010 | davef
First, we expect that your equipment supplier would help you with this. Then again with lots of used equipment flying around, some of the basic stuff often gets pushed to the back of the bus. Second, here is a clip and paste on the basics of equipm
Electronics Forum | Tue Mar 23 07:35:42 EDT 2010 | jooh
Since I'm new to the forum I probably ask previously answered questions (that I have not found) but I would be grateful if someone could clarify this for me. I'm in R&D at a company where we design low volume (1k-10k) fairly complex PCBAs for our pr
Electronics Forum | Mon Jun 14 14:09:23 EDT 2010 | jmedernach
Chris, There are a lot of potential causes for voids. I'll list a few below: a.) cleanliness (or lack there of) b.) Via in pad where said vias are not filled c.) reflow profile design d.) incompatible materials My knee jerk reaction would be to che
Electronics Forum | Fri Jul 16 17:39:33 EDT 2010 | deanm
It is a PCB design issue where the copper patterns are not balanced among the layers. Baking the boards in order to correct the warpage will not improve it. We've had a problem with one bare board in particular warping the same way from two differen
Electronics Forum | Fri Aug 20 19:01:26 EDT 2010 | varivenca
VARIVEN,C.A, is a newly emerging company in the electronics field. Variven was established in 2009 to take care of design, repair and maintainance of pcb cards and electronic machinery for oil companies. As of now we are creating basic boards for o
Electronics Forum | Tue Dec 07 10:47:09 EST 2010 | walkbury
As a high mix, low volume CEM who deal with a lot of free-issued kits, we are heavily reliant on foil (tape cover) extenders. We don't usually bother with splicing as our machine feeders (Simenes Siplace and Samsung SM321) are designed in such a way
Electronics Forum | Fri Jan 28 19:24:15 EST 2011 | jlawson
Should contact Rehm Thermal they have a whitepaper on pros and cons of Vapor Phase vs Convection.... Vapor phase traditionally targeted heavy PCB, large mass products better then lighter ones, due to ramp rate control being harder to attain vs say a
Electronics Forum | Mon Jan 31 09:31:31 EST 2011 | dwonch
Hi all, We've had a Yestech F1 system for several years now. Overall we are happy with the machine, fast and easy to program. Good false call rate and few misses. Now for the issues. We have two in particular. 1. Software crashes - these general
Electronics Forum | Sat Jun 04 12:11:49 EDT 2011 | davef
Q1) How to identify on good or bad RF shield that could contribute to dewetting? A1) We use Alloy 770 and 752 [German silver] for our RF shields. We have never seen a solderability issue, even aged stock solders well. * Nickel Alloy 752, Nickel Silv
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