Electronics Forum | Tue Jan 16 20:44:07 EST 2007 | davef
Bridging Causes: Insufficient flux, Excessive pre-heat, High conveyor speed, Solder contamination Look here: * http://www.smtnet.com/library/files/upload/Reflow%20Wave%20Poster.pdf * http://smt.pennnet.com/Articles/Article_Display.cfm?Section=Archi
Electronics Forum | Tue Jan 16 16:59:39 EST 2007 | realchunks
Pallet angle is usually pretty good. Lead length is also another good thing to keep as short as possible. Air Knives don't work that well. Also check your board. Make sure you have solder resist between each and every thru-hole pad. If the board
Electronics Forum | Mon Jun 06 00:42:52 EDT 2005 | Dr. K
Hello all. I would like to implement a process in our SMT site. The process purpose is to reduce the scrap level from our SMT line machine (siemens). I would like to hear some advices for that kind of process. -preventive actions I should implement
Electronics Forum | Wed Jun 15 14:57:08 EDT 2005 | Ervy
Siemens has an excellent reporting system. If you are running on Siplace Pro you can easily export the pick data and performance data to anaylize. If funds aren't an issue, look into the Siemens Explorer software, this will provide you with data,
Electronics Forum | Wed Jun 15 16:54:33 EDT 2005 | linny999
Siemens is an excellent platform. To reduce your scrap:- Carry out the specified maintenance, especially the segments and valve plungers; Calibrate revolver heads to benchmark. Remove the tables, smooth the magnetic strips, clean the mounting faces,
Electronics Forum | Wed Jun 09 17:53:06 EDT 1999 | Tom B.
| I am interested in seeing how some of you quote smt work. Currently we quote off a bom without component packages known then look in data books to find out what type of component they are. This job will be mine soon but i really believe there is a
Electronics Forum | Mon May 06 11:45:32 EDT 2019 | slthomas
There are quite a few papers out there on the subject. Just enter "SMT void reduction" into google or other search engine and take your pick. That said, slow ramp rates and paste volume reduction are a good place to start. Although I haven't tried i
Electronics Forum | Tue Jan 18 12:36:11 EST 2000 | Dave F
Dave: I haven't located something to support your contention, yet, and I'm not going to comment on the factors that drive reliability beyond component selection, because I know that you've got some sweaty-palmed sales type wringing his hands waiting
Electronics Forum | Mon Jan 17 12:16:02 EST 2000 | Brian W.
My old company (CM) ran SMT to 50ppm including some very complex boards. We established the normalizer number by: #components + #solder joints. As was stated earlier, the ppm for any given product is the result of many factors. You may get differen
Electronics Forum | Thu Mar 15 17:33:20 EDT 2007 | Darby
As you are new to this - start with lots of hair and slowly reduce. Start with one good person. Spend the money on someone who knows the process, can set it all up, (including air, power, alignment, calibration, programming, troubleshooting, stenc
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