Have you tried the LTSpice Yahoo group? They may be able to help. I see these types of things asked over there all the time. Clarence Erickson clarence.erickson@gmail.com On 6/28/07, Carlos Marcano wrote: > > Hi, Richard. > > > > Have you tried looking up the manufacturers websites for models? TI & > > Philips are pretty good & I'm pretty sure Fairchild also has them. > > Yes, I have. The probloem is that I need some relative older and > semi-obscure parts with less probability of obtaining models from the > manufacturer (if they still are in the business!). > > > If you need to extract a model from a sample part, it gets a bit more > > difficult. Pspice has a model generator, but it's only available for > > diodes in the eval version I use. > > That is the quid. I am able to obtain the datasheets so I would like > to build the models from them. The problem I am facing is that I can't > find correspondence between some of the parameters from the datasheets > and the models. > > By the way, I use LTSpice/SwitcherCAD from Linear Tech. > > > > It is an EXTREMELY good SPICE simulator. And it is freeware. > > Regards, > > Carlos. > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist