Electronics Forum | Tue Sep 06 12:39:06 EDT 2011 | deanm
According to IPC-7351A, the optimum fiducial is a solid circle with a minimum of 1mm diameter, but can be up to 3mm. There should be a solder mask clearance a minimum of 2x the radius of the copper circle. So the minimum fiducial size is 0.040" with
Electronics Forum | Fri Jan 06 13:47:15 EST 2012 | davef
Your starting [and finishing] point should be IPC-7351B Land Pattern Calculator and Tools - http://landpatterns.ipc.org/default.asp For more, look here: * http://www.smtnet.com/bob-willis/pbdai.html * http://www.onboard-technology.com/pdf_novembre
Electronics Forum | Thu Sep 23 19:52:12 EDT 2021 | stephendo
If you like that one then you might also like this one. https://www.topline.tv/products.cfm A few lifetimes ago,I would always make sure I had a copy of the Topline brochure. They make dummy parts and their borchure had them organised nicely. You w
Electronics Forum | Fri Jan 04 21:58:03 EST 2008 | mika
Hi everybody out there, A little interesting something for all of us of how to handle the cad-component orientation in regards to cad import into your SMT-machines S/W (Fuji Flexa, FujiCam, UIC, Siemens, Pana, Mydata or Whatever). We have struggle f
Electronics Forum | Wed Aug 18 09:20:22 EDT 2004 | QE
Davef, Sorry for the late response. I was trying to gather more info. The group with low ionic contamination levels came from one of our other facilities. We want to outsource more of our product due to increasing demand. Both groups use the same
Electronics Forum | Sat Sep 04 06:25:07 EDT 2004 | GS
Many Thanks Dave for your patience (GBY). I was just trying to give a chance to our connector Supllier to read few micrograms less of NaCl found with the connectors. But even if using a "bonus formula" they are out of specs. Following it could be i
Electronics Forum | Wed Oct 17 17:36:32 EDT 2018 | davidsmullins
Thanks for all the input! I should clarify a couple things. We are a contract manufacturer; we simply build to our customer's design prints. This particular board, we outsourced because of some requirements for processes we don't do in-house. So, we
Electronics Forum | Thu Jul 01 10:24:31 EDT 2004 | davef
There is no specification for �Ion Chromatography for Ionic Cleanliness�. The performance of your product in your customer use environment determines the level that you select. The good part for you is that have at least one pole that you can put i
Electronics Forum | Mon Jun 28 10:03:22 EDT 2004 | davef
First, welcome to your new job. Second, IPC-TM-650 2.6.14 is only loosely an �Ionic Contamination (Electromigration) Test�. * Electromigration Test, IPC TM 650 2.6.14, 2.6.14.1 * Ion Chromatography for Ionic Cleanliness, IPC TM 650 2.3.28 Third, I
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