Electronics Forum | Wed Jul 24 17:25:01 EDT 2019 | davef
Your solder stencil design should follow all basic rules for solder stencil design are followed in accordance with IPC-7525 including adherence to an area ratio of 2:3 or greater and an aspect ratio of 1.5 or greater.
Electronics Forum | Mon Oct 15 10:51:49 EDT 2001 | davef
On over printing, the general issues are: * Paste deposits being so large that when reflowing, collapse onto many, rather than a single solder mass. * Paste expanding during heating and being close to other solder deposits and bridging [as you say].
Industry News | 2003-03-19 08:25:45.0
Pilot Program Facilitates Information Exchange Standards in Electronics Manufacturing Industry
Industry News | 2011-02-09 14:58:43.0
Keeping on top of ever-changing environmental regulations around the world and understanding how those regulations impact electronics manufacturers and their suppliers are the first steps on the long and winding road to compliance. Providing a roadmap to compliance, the IPC It’s Not Easy Being Green Symposium, May 11–12, 2011, in Boston, Mass., will give companies up-to-date information on the laws and regulations that affect every link of the electronics manufacturing supply chain, from Europe and Asia to South America and the United States.
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/ipc7093a-btc-qfn-solder-mask-defined-thermal-pad_topic2154_post11220.html
= 0.20 mm for 9 vias There is some really good information about this subject authored by Matt Kelly, Mark Jeanson and Mitch Ferrill from IBM
