Hi Can anyone give me a stack up for a 6 layer pcb of 1.6mm thickness? I know the layer order I want to use but require the dielectric thickness to give 50 ohm signals on the signal layers. Ideally I would like the signal width to be no more than 0.2mm on those layers and using ½ oz copper for the signals and 1 oz for the planes. Top Gnd Sig Sig Pwr Bottom Thank you Jon ------------------------------------------------------------------ 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