Hello!! All, I am new to the field of PCB designing and SI analysis. I would like to know the difference between SPICE model and IBIS models. I have to perform SI analysis for signals of order of 600 MHz. So I would like to know more about the models and which should be preferred and why. Thanking You, Regards, Viral Viral S. Shah Paxonet Communications India Pvt. Ltd. www.paxonet.com ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field 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