Electronics Forum | Mon Jul 19 10:10:38 EDT 1999 | John Thorup
| | | My wavesoldering machine is equipped with Titanium finger. What composition of Titanium alloy used ? Any grade difference, and which is the best grade for long life ? An info or website concerning it. | | | | Dear Barden, | | | | Sorry, I a
Electronics Forum | Wed Jun 30 11:09:24 EDT 1999 | John Thorup
| | | Could somebody tell me what means Leaching, ie: "Leaching of terminal end face exposing the ceramic"? | | | | | Roberto: Leaching, according to the SMTnet Library of Terms: | | | | Leaching. Dissolution of a metal coating into liquid solder.
Electronics Forum | Fri Jun 18 10:24:12 EDT 1999 | John Thorup
| first of all what is the technical term for the small amount of solder on a plated pad. we are getting poor screen printing gasketing on a 20 mil qfp due to this solder not being even or too high in spots and not covering the length of the pads. an
Electronics Forum | Thu Jun 10 11:23:10 EDT 1999 | Gang Pan
| | I am starting a new project which involve 3 oz copper layer with 20 mil components on the top of the board and 0.040" thick copper with D2Pak on the bottom of the board. | | There is anybody has experience on metal-based PCB reflow process? I g
Electronics Forum | Fri May 14 18:29:26 EDT 1999 | Earl Moon
| Hi Guys, | | I am going to be graced with the good luck of processing microBGA's in the near future. A bit of a step forward from printing 20-mil pitch and wave soldering 0805's, wouldn't you say? | | So, any of you folks who have already experi
Electronics Forum | Tue May 18 03:17:50 EDT 1999 | Philip B
| | Hi Guys, | | | | I am going to be graced with the good luck of processing microBGA's in the near future. A bit of a step forward from printing 20-mil pitch and wave soldering 0805's, wouldn't you say? | | | | So, any of you folks who have alre
Electronics Forum | Sat Mar 20 21:52:21 EST 1999 | Steve Gregory
| I am looking for clip art images of electronics assembly. Images like wave soldering, surface mount components, soldering irons... just general assembly graphics. Many sites have different individual images that they use I was just wondering if a
Electronics Forum | Tue Mar 02 13:00:12 EST 1999 | Bill Haynes
| I'm trying to get a feel for what the industry is doing with regards to collecting assembly defect data in the SMT/PWA process. Is it sampling or 100%? What are the points within the process where critical assembly defect data is collected. We run
Electronics Forum | Thu Feb 18 17:29:54 EST 1999 | Stefan Witte
The circle is not a "good" fiducial. The gradually change in contrast of a circle versus a cross makes it difficult to find the center of the fiducial. By pre-tinning the fiducials there will be a convex mirror surface distorting the edges even more.
Electronics Forum | Fri Feb 19 14:44:24 EST 1999 | Lance A. Smalley
You don't say what kind of machine you are using but several just use the edge of fiducials to determine area (and centers). If you are teaching in binary and have the ability to select a decision level (threshold), use a level half way between loss
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