Electronics Forum | Fri Aug 03 22:36:28 EDT 2001 | mugen
We used Thermal Pads, made of black rubbery material, and sticky on both sides (like x2 side tape), intent is to place in between, BGA/QFP and the PCB board, and reduce the air-gap flow between, the PCB to SMD... air-gap will permit air flow, that i
Electronics Forum | Mon Jan 31 12:15:32 EST 2000 | Neil
I am looking for a Mydata users group, one possibly located in the Chicago area. If such a group does not exist, I would be more than happy to help start one. I have an older Mydata TP9 (non-UNIX) machine, with weak (yet expensive) support from the m
Electronics Forum | Sat Jan 29 02:30:14 EST 2000 | Dean
5K$. Of course I remind myself that when these machines were designed BGA's didn't exist. I had no choice but to purchase this option as a new machine was out of the question and I place around 15,000 BGA's per month on this line. So the ROI was v
Electronics Forum | Wed Jan 19 10:02:55 EST 2000 | g cronin
has anyone had any good experiences with purchasing replacement nozzes for pick and place, chipshooters, from a supplier other than the original manufacturer? I know of a couple that currently sell aftermarket replacement nozzles at a very reasonabl
Electronics Forum | Fri Jan 14 08:36:33 EST 2000 | Wolfgang Busko
Yes selective gold might be a cost factor. How about the whole board in Ni/Au that�s what we do with no difference in costs to HASL or white tin. But maybe the pricing in Germany is different than in other places. Can�t say what�s the best for you bu
Electronics Forum | Thu Dec 30 12:17:19 EST 1999 | JAX
Marlies, The terms are one in the same but are used according to how you descibe the situation; i.e. centering refers to adjusting the part where as aligning normally deals with adjusting the vision. NOT THAT THIS IS A RULE. ( different strokes...
Electronics Forum | Tue Dec 21 17:11:18 EST 1999 | Pascal G
Hello guys , we just started first trials on PTH connectors mounted in SMD. Our first results show big deviation of solder filing in the hole and also a dramatic decreasing of mounting spped on pick & place equipement. 1 - Did someone uses proflow
Electronics Forum | Mon Dec 20 13:39:08 EST 1999 | Wolfgang Busko
Hi Clarissa, seems to be a real start up situation you are in. For the printing there is IMO no need to buy any sophisticated automatic-vision-alignment-self-cleaning-inline-and-more-machine. Features you need: - adjustable in X-,Y-,Z-axis (individu
Electronics Forum | Tue Dec 14 13:39:16 EST 1999 | KA
Hello Everyone! I have encountered a situation where I have surface mount components on the backside of the board and I need to wave all the through hole leads on the backside as well. Can this be done? I thought of the possibility of adhering the
Electronics Forum | Mon Dec 13 15:56:16 EST 1999 | David Spilker
In our DFM guidelines for PWB layout we have discouraged placing BGAs in the longitudinal center of a PWB. We believed the increase stress through reflow and wave was not good for BGAs - probably read it or reasoned it. Now, this position is being
