Hi Vivek, Thank you for your help. I have installed Murata's EMI filter simulation tools, it can simulate a CMC coil but only in this software, the model of CMC cannot export for simulation in other softwares such as hspice. Yuden's website offer many single-chip beads' s-param or spice models, but there is no CMC coil model such as CM01H900T. If I use two ferrite beads or incuctors instead of CMC coil in simulation link, which component can be used to CM01H900T? and how should I set the mutual inductance between the two chips? Thanks. Lucian ******************************************************************************************** -------------------------------------------------------------------------------------------- Hello Lucian, Below link has Murata EMI suppression Filter simulation software: http://www.murata.com/products/design_support/mefss/index.html The software simulates effects of Murata EMI Filters and Chip Capacitors based on specified conditions. SPICE Models: Specific Spice models for Inductors/ferrite beads are provided by Taiyo Yuden. http://www.yuden.co.jp/us/support/spice/index.html Hope this helps. Regards Vivek -----Original Message----- From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On Behalf Of Lucian Zhang Sent: Monday, July 06, 2009 8:29 AM To: si-list@xxxxxxxxxxxxx Subject: [SI-LIST] Common mode choke coil's SI model Hi all, Who has common mode choke coil's SI model (spice model), thank you. or how to model common mode choke coil and ferri bead? Such as MURATA's DLW31SN900SQ2. Lucian ------------------------------------------------------------------ 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 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 DISCLAIMER: ----------------------------------------------------------------------------------------------------------------------- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or HCL or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of HCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. Before opening any mail and attachments please check them for viruses and defect. ----------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------ 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 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 ------------------------------------------------------------------ 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 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