the idea is to make the PTH attachments outside the compressed region between the fasteners. Steve. Augusto Einsfeldt wrote: > Hello all, > This maybe an OT but I guess some members here can clarify it easily. > I am used to use mettalized holes in PCBs to connect the GND to the assembly chassis (frame) of the machine and it seems to work fine. In the other hand I have seen many PCBs for computer mother-boards and even telecom with a non mettalized hole of, say, 3mm diameter and several through holes inside the pad ring. > Is it just to ease some manufacturing process, a quality improvement design or is it SI related? > > Thanks for your time on this matter. > > -Augusto > > . > > > > > ------------------------------------------------------------------ > To unsubscribe from si-list: > si-list-request@xxxxxxxxxxxxx [1] with 'unsubscribe' in the Subject field > > or to administer your membership from a web page, go to: > //www.freelists.org/webpage/si-list [2] > > For help: > si-list-request@xxxxxxxxxxxxx [3] with 'help' in the Subject field > > > List technical documents are available at: > http://www.si-list.net [4] > > List archives are viewable at: > //www.freelists.org/archives/si-list [5] > > Old (prior to June 6, 2001) list archives are viewable at: > http://www.qsl.net/wb6tpu [6] > > > > -- Steve Weir IPBLOX, LLC 150 N. Center St. #211 Reno, NV 89501 www.ipblox.com (775) 299-4236 Business (866) 675-4630 Toll-free (707) 780-1951 Fax ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List technical documents are available at: http://www.si-list.net List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu