Electronics Forum | Wed Jun 25 12:13:31 EDT 2003 | russ
A lot of it depends upon what the lead terminations are and the storage conditions. For example if they are tin you will run into trouble. We have used all types of parts that are all ages (We just started doing BGAs that are 5 years old.) I don't
Electronics Forum | Fri Jun 27 11:36:03 EDT 2003 | Tina
Thank You, Unfortunately I work at a contract house so I have no control. I will definitely take your advice and try to prevent as many problems as I can. From what you�ve told me already I can see a few things we need to change before processing th
Electronics Forum | Thu Jun 26 17:40:21 EDT 2003 | Steve
Wanted to inquire if anyone has a way to monitor cleanliness of boards that are assembled with a no-clean process. I'm aware that incoming board cleanliness can be monitored, however, I am after checking of cleanliness of boards after assembly. Wit
Electronics Forum | Fri Jun 27 14:52:00 EDT 2003 | davef
Running a spare board with each job would be expensive. Consider running boards: * That were scrapped by your fabricator. * Without components. Admittedly you loose a measure of the contamination provided by your component suppliers, but if it's a
Electronics Forum | Fri Jun 27 11:33:50 EDT 2003 | James
I am doing the same once I get a few varies in different profiles, I set about 6 different levels and depending on board thickness and qty of large parts I go from that. It has worked well for us. Hope this helps because we also hate waiting for ano
Electronics Forum | Sat Jul 05 00:07:31 EDT 2003 | iman
I concur, each PCB is unique is the characteristics area of the PCB, component qty, SMD types, component layout, PCB infeed direction, paste. It is generally a very good idea to treat each PCB model as a unique individual unit for optimize in the re
Electronics Forum | Fri Jun 27 15:37:02 EDT 2003 | caldon
Charlie- You answered your own question...1206, 0201, 0603, 0805, 0402 are all the package dimensions. In addition Here is a generic link from practical components that list most package sizes, feeder size, tape type... http://www.practicalcomponen
Electronics Forum | Mon Jun 30 22:02:43 EDT 2003 | davef
If you don't seal your packaging, the silica gel will try to remove the moisture from the air and will become saturated pretty quickly. There is no requirement that you pack/ship with dessicants. Some customers require such things though. Why do y
Electronics Forum | Tue Jul 01 21:06:12 EDT 2003 | ramanandkini
My customer just assembles it to the car. We want to use the silica gel to avoid moisture since the assembled part (clock) reach him via ship after 50 days. The electronic circuit board has no conformal coatings at present. We are working on that. Ou
Electronics Forum | Mon Jun 30 09:43:03 EDT 2003 | russ
Try searching the archives, I saw the formula posted in an earlier thread I belive that relating to Double sided with BGAs but I am not sure I think Dave F. posted this one. So what is an "R"QFP I haven't heard of that one before. Russ
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