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#1
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Hi,
i am looking for a 2N3866, 2N5109 spice model.(LT-Spice) Other RF models also welcome.May someone can point me in the right direction. Vy 73 de Herb - OE5BRL |
#2
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Looks like the company that put out the following PDF:
http://home.earthlink.net/~wksands/nonlin.pdf has spice models. I suppose you have to pay for them, though. I'm surprised a Google search didn't turn up any free models. How accurate do they need to be? You can bulid your own, certainly...you can use the BJT model and add the package parasitic inductances, resistances, and capacitances, and probably get decent correspondence with the way real parts perform. I have a book about building Spice semiconductor models, but haven't done any of that for a long time and never was into it deeply enough to think I'm good at it. www.duncanamps.com has quite a bit of spice stuff, including some transistor models and links (some broken by now) to manufacturers' spice stuff. Cheers, Tom |
#3
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Herb.Breitenfellner wrote:
Hi, i am looking for a 2N3866, 2N5109 spice model.(LT-Spice) Other RF models also welcome.May someone can point me in the right direction. Vy 73 de Herb - OE5BRL Herb, I've also searched for the same Spice models and also any RF power transistor models. I didn't turn up anything except some very recent power devices with very very high (GHz) Ft. I was hoping to simulate a linear amplifier. If you find anything please post again with details. --Gary |
#4
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A bit more about spice models for RF transistors...
www.duncanamps.com has transistor models for some parts, as I noted before. Specifically, there are several models for Motorola RF parts, with the Moto numbers like MMBR931. Some manufacturers provide spice models for current production parts, if not for obsolete ones. For example, if you download the Philips RF manual (as a PDF), you will find a page (current edition it's page 31) of links to parts with spice models. The links take you to the Philips page for that part; look for a link to the spice model on that page. There seem to be some spice models on the ON semiconductor website, but I don't know how to search them very efficiently. Maybe there's a way... Avago Technologies (used to be part of Agilent, used to be part of HP) generally has a good set of S-parameters for various bias conditions for their parts. Since the parts are generally intended for linear amplifier service, that's reasonable. It would be nice to have a place on the web to archive at least links to models, if not (for copyright reasons) the models themselves. Anyone know of such a site? |
#5
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Herb:
Take a look at http://www.sss-mag.com/pdf/rfosc.pdf and you'll find a 2N5109 SPICE model in the article. Sorry, I don't have a 2N5179 model. Since there was a 5109 model, maybe enough patience will get you a model on Google. Chuck |
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