model parameters in LT Spice

Michael Robinson · 2010-10-13T20:41:09+00:00

I've just started using the free version of LT Spice and haven't had a problem doing simulations as long as the components are in the library. Now I need to do a simulation using a component that's not in the LT Spice library, the 1N4001 diode. Somebody sent me the model for the 1N4001, which is great. So my question is, after you put a diode symbol in the schematic, how do you assign parameters to it? Here is the text I received for the 1N4001:*SRC=1N4001;DI_1N4001;Diodes;Si; 50.0V 1.00A 3.00us Diodes, Inc. diode.MODEL DI_1N4001 D ( IS=76.9p RS=42.0m BV=50.0 IBV=5.00u+ CJO=39.8p M=0.333 N=1.45 TT=4.32u )Based on the text for the diode models in LTSpice, I guess I need a string of text that looks something like:.model 1N4001 D( IS=76.9p RS=42.0m BV=50.0 IBV=5.00u+ CJO=39.8p M=0.333 N=1.45 TT=4.32u )First, obviously I put a diode symbol in the schematic; then what?

Oct 13, 2010 21 Replies

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qrk 15 years ago

LTspice seems to be friendly about keeping your additions, even after updating.

Mark

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Joerg 15 years ago

Now

which

schematic,

On my PCs the update never worked. It requires a clean re-install every time. Always has :-(

Probably some firewall action.

Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.

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