Hi all, Has anyone had experience with the 200ohm to 50ohm baluns from TDK? If so, were you (did you) able to define a 200ohm differential impedance structure on the printed circuit board it was used on? How do you get a 200ohm differential impedance structure at all? Anyone? The circuit structure only works out to be about 1/4 inch long, but some engineers question what would happen if it doesn't get 200ohms. Any help is appreciated. Thanks. Mitch ----------------------------------------- Stay ahead of the information curve. Receive PCB news and jobs on your desktop daily. Subscribe today to the PCB CafeNews newsletter. [ http://www10.pcbcafe.com/nl/newsletter_subscribe.php ] It's informative and essential. ------------------------------------------------------------------ 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 FAQ wiki page is located at: http://si-list.org/wiki/wiki.pl?Si-List_FAQ List technical documents are available at: http://www.si-list.org List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu