Kami- I don't have a model for that particular ferrite bead, however check out a document I wrote quite a while back that describes how you can create a very accurate model from either data sheet numbers or measured data. The document can be downloaded here:=20 http://www.si-list.org/files/tech_files/power_filt.pdf The method originally was written up in an old MicroSim (Pspice) app-note and creates a frequency dependent G element table defined model from magnitude and phase Z numbers (or equivalently from R and Xl numbers) The method isn't the only way to do it or even necessarily the best, but I did have very good results with the models synthesized as described. -Ray -----Original Message----- From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On Behalf Of Kamran Azizi Sent: Monday, April 25, 2005 11:44 AM To: si-list@xxxxxxxxxxxxx Subject: [SI-LIST] Ferrite model By any chance does anyone have an actual model for Murata Ferrite with the part number of BLM18HG471SN. What we get from the lab measurements is totally diff. from what we see in the simulation.=20 =20 Any advice on how I can proceed.? =20 Kami ------------------------------------------------------------------ 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