Electronics Forum | Mon Apr 26 17:01:35 EDT 1999 | Cunli Jia @ SMTnet
Chrys, First, thank you for contributing to the newly automated SMT Library. Second, no registration is needed in order to access library information including your newly posted papers. Therefore they can simply download your papers from this si
Electronics Forum | Mon Apr 26 11:42:29 EDT 1999 | Chrys Shea
| | Hi, | | Im doing some experiments and studies on lead free solders ( any alloys).I would like to get some information on a few lead free solder paste manufacturers and if possible their web page adress and contacts. | | Thanx in anticipation |
Electronics Forum | Sun Apr 25 09:45:13 EDT 1999 | Joe Cameron
Hello all, Our guys here still have some questions on the "optimized" profile which sees a more moderate ramp up straight to reflow temperatures versus the conventional profile which has a plateau at around 150 Celsius. If the optimized profile can
Electronics Forum | Sat Apr 24 08:23:03 EDT 1999 | Bubba
| Surprisingly enough, ever since the addition of an omega wave, we solder those often-troublesome SOT23's just fine and dandy.. anyways, long-term, well be getting a universal GDM which uses positive displacement pumps..currently we're using fuji g
Electronics Forum | Fri Apr 23 11:37:21 EDT 1999 | Dave F
| We are an assembly house engaged in large volume manufacturing of Computer motherboards and others. We are in the process of selection of a new wave soldering machine. Can somebody help me inform what are the different parameters which must be ens
Electronics Forum | Thu Apr 22 16:54:28 EDT 1999 | John W
| I need to know if there are any special component pad designs that need to be considered when evaluating paste-in-hole? We have a few through hole connectors that are good candidates to place pre reflow. Does anyone have sugguestions. | Thanks |
Electronics Forum | Thu Apr 22 10:57:20 EDT 1999 | Jack Coia
On various PCB's after building processes,such as reflow, flowsolder and wash. The soldermask on the PCB's have become discoloured, like a 'marble' effect all along the solder side of the board, it is lighter in contrast than normal, although when ot
Electronics Forum | Thu Apr 22 01:47:28 EDT 1999 | Larry Johnson
Recently, we have been having problems with PLCC's passing vision on our IP's If the part is set up to be placed on Head 2, it will not always pass vision. However, if we move it over to Head 1, it will pass and place just fine. Now, I do realize
Electronics Forum | Wed Apr 28 00:58:22 EDT 1999 | Will B. Caught
| Recently, we have been having problems with PLCC's passing vision on our IP's If the part is set up to be placed on Head 2, it will not always pass vision. However, if we move it over to Head 1, it will pass and place just fine. Now, I do realiz
Electronics Forum | Wed Apr 21 15:27:24 EDT 1999 | Murray Pulman
Hi Scotty sorry to stir things up but we assemble some seriously high value boards on a contract basis with vias through bga pads. However, not blind vias, so there are no cleaning issues & we use 6 though stencils to provide a little extra paste t
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