Electronics Forum | Thu Feb 03 11:40:41 EST 2000 | g cronin
Looking through this months SMT mag every other page has an add for a new AOI system. This forum has had a few disscusions about these sytems but I think its time to have a good one. It seems like the technology may be getting to the point that it
Electronics Forum | Wed Jan 26 05:02:13 EST 2000 | maddog
I am consulting for an SMD placement machine manufacturer, looking at Human Interface issues -- hardware and software. I believe strongly that usability directly affects productivity. I would appreciate any comments the community would provide regar
Electronics Forum | Fri Jan 21 19:27:54 EST 2000 | Scott S. Snider
With the Siemens line computer it is possible to see what the maximum placements per hours should be for any given job/setup. After you optimize the job you should check that and see how you perform against that number. In many cases the placements
Electronics Forum | Thu Jan 20 12:32:40 EST 2000 | Dave F
Hey Dreamguy: On stand-offs: * "Sugar" stand-offs look nice, after washing (if you wash, as Chad said), but we find them kinda fragile. The only people that can install 'em without bustin' more than they install are the "skill people" that we don
Electronics Forum | Mon Jan 31 13:34:43 EST 2000 | PAUL WOOD
HELLO CUSTOMERS OF OK LATEST INFORMATION UPDATE WITH REFERENCE TO OLD BGA 2000 MACHINES WHICH ARE NOW 6YEARS OLD MANY NEW INVENTIONS WHICH HAVE TAKEN PLACE CAN BE PURCHASED FROM METCAL TO BRING YOU TO THE FOREFRONT OF TECHNOLOGY.(PATENTED TO ) BGA 30
Electronics Forum | Thu Jan 13 15:19:51 EST 2000 | Dave F
Hey Jack: It's certainly "do-able." Conformal coating adhesion testing was done as part of the "Evaluation of Low Residue Soldering for Military and Commercial Applications: A Report from the Low Residue Soldering Task Force," published by Sandia Na
Electronics Forum | Fri Jan 14 07:55:07 EST 2000 | Pat Pepper
Hi Wolfgang, Thanks for the response. We had a similar situation to yours with some white tin samples that sat around for about eight months. Samples soldered right after they arrived soldered better than the ones we soldered eight months down the
Electronics Forum | Tue Dec 28 12:55:16 EST 1999 | Justin Medernach
Greg, The best advice that I can give you is a PBGA will respond just like any other surface mount package. There may be a 5 degree delta between a PBGA 356 and a QFP208 but the two respond very similarly in the convection reflow environment. CBGAs
Electronics Forum | Fri Dec 17 09:47:10 EST 1999 | John O'Brien
Chuck: Your best resource is the Symbology Research Center in Huntsville AL. In is a research and development facility run by RVSI Acuity CiMatrix, the folks who invented the Data matrix (DM) 2-D code. This facility is unbiased as to technologies and
Electronics Forum | Thu Dec 16 16:46:47 EST 1999 | Mike Naddra
Steve , I use a general set of guidlines when developing reflow profiles: Ramp rate to 140 deg C - 50-60 seconds Time at preheat (140-160 deg C) - 90-120 sec Time above liquidous (183 deg C) - 45-90 sec Time at peak (215-225 deg C) - 9-12 sec peak t
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