Electronics Forum | Fri Nov 23 16:32:05 EST 2007 | davef
There a several things you can do to prevent the solder wicking down the hole with the current design, and that's where you should focus. Cost goes up as you go down the list, but in neither case do you need to respin the board, have solder starvatio
Electronics Forum | Fri Dec 07 12:01:14 EST 2007 | elg1
The 3000 hours is correct. It was a VERY fast ROI! Back to the discussions on the earlier threads, some of this information is correct. If you exceed the design limitations for keep out requirements and your board tolerances vary, you can have twe
Electronics Forum | Wed Jan 16 14:13:42 EST 2008 | wayne123
Well I can't tell you what one is the best, But I can tell you what one we have and that I am not happy with, A.P.E is the company it is made by, we have the "chipmaster". They have several units avialable and from what I can tell they are all about
Electronics Forum | Thu Jan 17 11:49:54 EST 2008 | wayne123
HI, I have ran into this a time or two, and what I did before we got the BGA rework station was to run some flux under the component, and since the flux that was in the solder on the other solder joints has at least part of the way burned off in the
Electronics Forum | Wed Jan 30 14:11:15 EST 2008 | slthomas
We dodged it for a while but it was inevitable. Here's the question. What do I REALLY need, and does anyone even agree on it? OK, that's *two* questions. The first board we're likely to do has three parts that will need special consideration. One
Electronics Forum | Thu Apr 17 05:14:40 EDT 2008 | gregoryyork
I have seen similar things like this before with Solder Resist redepositig back on the pads, this is a clear residue very hard to see. Solder resist will obviously resist solder adhering to it. If you rework the boards then the heat of the iron will
Electronics Forum | Fri Apr 25 11:38:22 EDT 2008 | vortex337
Our company has run into an issue with de-wetting of lead free components. Our profile is dead on with paste manufacturers specs. We have had this issue with both gold immersed, and hot air leveled boards. We have tried three different solder paste m
Electronics Forum | Thu May 01 10:31:26 EDT 2008 | cdsullivan
Good Morning, We are seeing an increased number of our customers that specify a Pb-Free BGA when the rest of the board assembly is SnPb. Of course when we reflow at the SnPb profiles, we don't always get a properly collapsed BGA. So we end up rewor
Electronics Forum | Mon Jul 21 19:04:34 EDT 2008 | jmelson
I've been using E-teknet for the last couple years, for a wide range of boards from 2 to 6 layers, and one of the 6-layer boards has an insane density and a zillion close-packed vias. Sam at E-teknet guided me through tuning the board design to opti
Electronics Forum | Thu Jan 22 11:12:06 EST 2009 | davef
Conformal coating masking: Electronic equipment manufacturer's use conformal coating processes to protect printed circuit modules from moisture, fumes, rapid temperature changes and other environmental conditions. Typically, pressure sensitive tapes
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