Electronics Forum | Wed Jan 28 08:11:20 EST 2004 | stefwitt
Martin, may I ask what your offer is? Does the pick and place machine vendor provide you with a special nozzle, which would not require the peel off cover. Custom nozzles from the OEM are quite expensive, because they implement engineering and test.
Electronics Forum | Wed Feb 04 23:27:38 EST 2004 | dougt
I did some work with 400E's and have can give you a couple things to try with your Y axis problem. 1. There is a file called stepperparms.exe that will load all the stepper parameters on the PCL IC's. Your y axix chip may have corrupt data on it.
Electronics Forum | Tue Feb 17 10:55:49 EST 2004 | bobbyv40
Hi Dave, 1. As far as speed of removing componants, we use a board preheater to bring board temp to about 150 C. Then add a flux and then flood all 4 sides of the componant with the low temp solder. Using a suction tool the part comes right off. The
Electronics Forum | Mon Feb 23 20:19:15 EST 2004 | greg york
Has anyone ever seen a bulbous joint (on 1 side > of 1 designator) on every board? I checked the > preheat profile at the wave and have played with > dwell times but can't get rid of it. I checked > the archives and didn't find much. Any help wou
Electronics Forum | Mon Mar 08 09:03:17 EST 2004 | russ
Is this problem really related to the size of the BGA OR the size/thickness of the PCB? Would I be correct in assuming that your pre-heater is small in size? Usually a board warps like this when the ramp is to great at the localized area. the imme
Electronics Forum | Thu Mar 18 16:39:14 EST 2004 | Jed Johnson
A few good points have been made here: The profile could be ramping too fast. The profile could be gettting too hot. The profile may need to have more "soak" time before reflow to allow the board temperatue to equalize and the board to "relax" and st
Electronics Forum | Mon Mar 08 04:52:25 EST 2004 | martin
Hello i have some problem with our dynapert. Wonder if you could give me some advise. The problem is our machine worked not so well so we started to take out one by one of the cards and check all ic's so they was properly inserted. But when we ca
Electronics Forum | Sun Apr 04 08:03:41 EDT 2004 | davef
There certainly is a problem, but it�s unclear from your description whether the source of the problem is: * Design * Soldering * Component quality * A combination Recognizing the SMT connectors see stress that other SMT component do not, you give t
Electronics Forum | Thu Apr 15 01:51:52 EDT 2004 | kmccarten
Hi Haritt; In response to your request to information regarding cabinet manufacturers I would invite you to look at http://www.drycabinets.com which could give you some interesting if not valuable information regarding the functionality of desiccant
Electronics Forum | Wed Apr 14 08:15:18 EDT 2004 | arcandspark
We have tried other stencils with different size openings but this company will not allow us time or money to run any experiments to define stencil criteria and printer settings, its just run, run, run. They really dont care about post reflow yields.
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