Electronics Forum | Sat Oct 15 15:57:11 EDT 2005 | GS
Organic Solderability Preservative, is a definition that you can find, for istance, on IPC-2221A (geneiric standard on printed board design) Tabel 4-3 (Final Finisch, etc) Regards............GS
Electronics Forum | Wed Jul 06 20:40:40 EDT 2005 | davef
Voltage does not flow. Current flows as a result of a change in voltage. Current capacity of traces * Graph is IPC-2221 paragraph 6.2, Figure 6.4 * http://www.geocities.com/CapeCanaveral/Lab/9643/TraceWidth.htm
Electronics Forum | Fri Feb 02 08:22:10 EST 2007 | davef
Try: * IPC-2221, 5.4.3 Datum Features * http://www-ese.fnal.gov/ese-dfe/SMEMA%20fiducial%20mark%20standard.pdf
Electronics Forum | Wed Oct 07 11:42:02 EDT 2015 | davef
IPC2221 Generic Standard on Board Design talks about parts weighing 5 gm or more per lead shall be supported. And goes into detail that you can find there. I image much of the requirement for staking has to do with: * Weight of the component * Servi
Electronics Forum | Wed Apr 18 15:10:10 EDT 2018 | charliedci
If someone can find a RoHS specific standard I would be interested. IPC-2221 nor 2222 separate leaded from lead free (that I could see). Charlie
Electronics Forum | Thu Dec 05 08:32:56 EST 2019 | scotceltic
Thank you for the quick response. Can you tell me the exact verbage from IPC 2221B regarding via to via spacing ? I have Revision A and couldn't find anything that refers to this ? Thanks again for your help
Electronics Forum | Thu May 31 10:40:30 EDT 2001 | davef
See, all those bad thoughts we had ... The guilt, how do we live with it? 3 Spec Fir Tree General Technical Specification 3a Design/Layout: IPC-2221 IPC-2222 3b PCB Fab: IPC-6011 IPC-6012 IPC-4101 IPC-A-600 3c PCB assembly: J-STD-001 IPC-A-6
Electronics Forum | Fri Aug 08 12:52:57 EDT 2003 | davef
So, if you give your customers design guidelines and one their products causes a cataclysmic explosion, resulting in the deaths and disfigurement of many handicaped third-world children, could a lawyer consider you responsible? Spec Fir Tree General
Electronics Forum | Wed Oct 29 20:28:59 EST 2003 | davef
The possibilities are dizzying, aren't they? In our dingy fog, if we don't understand your requirement, say so. 3 Spec Fir Tree General Technical Specification 3a Design/Layout: IPC-2221 IPC-2222 3b PCB Fab: IPC-6011 IPC-6012 IP
Electronics Forum | Wed Apr 18 08:57:45 EDT 2018 | davef
Here is the IPC Standards Tree [ http://www.ipc.org/4.0_Knowledge/4.1_Standards/SpecTree.pdf ]. The design standards that you ask about are over on the right side. I'd guess that the following standards would be a good starting point: * IPC-2221, "
