Electronics Forum | Thu Jul 20 16:15:24 EDT 2000 | Bob Willis
Sorry at the moment I do not have information but as usual I want to get some hands on sessions going. We were doing a flip chip workshop hands on session for Speedline last week in England. We did the theory and then hands on soldering and underfill
Electronics Forum | Thu Jul 20 15:47:13 EDT 2000 | Bob Willis
Based on what you have said so far it would be worth trying extra pads and as you may know the drainage pads should be a minimum of three times the length of the pads before them to be effective. Also take some parts stick them to a glass plate and r
Electronics Forum | Fri May 04 18:55:49 EDT 2001 | johnthor
actually the "yellow lite" part of my posting was simply spoofing Dave's light up band-aid wrappers. But seriously (again) most high temperature Kapton polyimide film tapes, like 3M #92 and #1205, develop a considerable charge when unrolled or remov
Electronics Forum | Thu May 10 10:33:46 EDT 2001 | Eyal Duzy
Genny, I would like to correct part of the things that you were told. As far as I know, X-Ray tools are not positioned as tools to find solder volume simply because it is not a strong point for them. An X-Ray image is either a projection (2D transm
Electronics Forum | Mon May 14 14:51:36 EDT 2001 | Brian W.
Personally, I prefer the OSP. I get a flat surface to deposit paste on, resulting in more consistent solder paste volumes. With HASL, the amount of plating and the mounding affect the paste deposition. I have even had it affect the placement. The
Electronics Forum | Fri May 25 18:17:56 EDT 2001 | davef
No chart for you, but I will comment that a prudent product manager would require a substantial reason to accept the risk of product failure and loss of profit to redesign his / her product. We merrily assemble many boards each month that were desig
Electronics Forum | Fri May 25 17:25:25 EDT 2001 | morefun
Is anyone out there is the contract or the OEM sections using viscometers to check solder paste or glue for acurate process definitions. By this I mean check the materials viscosity over a period of time and measure the degradation of performance, t
Electronics Forum | Sun May 27 11:12:02 EDT 2001 | davef
Listen, you can figure this-out from your particular situation. Do this: 1 Talk to your operators and determine if they see viscosity changes in your materials. 2 Talk to the people doing viscosity measurements and determine if they see viscosity
Electronics Forum | Tue May 29 05:22:50 EDT 2001 | wbu
Why not find a rock to climb on instead of under ? You may find that it needs TRUST in your safety equipment ( harness, rope, slings, partner .... ) and concentration on your part to succeed that task. I haven�t checked those proposed parameters bu
Electronics Forum | Thu Jun 14 02:00:01 EDT 2001 | ianchan
Hi mate, AOI seems great for : 1) missing 2) wrong parts 3) wrong orientation 4) x-y axis misalignment 5) upside down placement 6) etc.....? AOI shucks for : 7) unsolder (joint) defect 8) tombstone / tilt My guys are evaluating AOI m/c, for substi
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