LTSpice - using an encrypted ".mod" file for a MOSFET

Thread Starter

pmd34

Joined Feb 22, 2014
518
Hi folks, I wish to use a particular MOSFET in a schematic / simulation in LTSpice, and have found the manufacturers supply an encrypted ".mod" file for part I want:
https://toshiba.semicon-storage.com/us/product/mosfet/detail.SSM3K361R.html
I wonder if some one could tell me how to go about actually getting LTSpice to use this model file - starting from the standard NMOSFET part.

I have looked online and tried changing the component attributes using cntrl + right clicking on the component, but im not really sure which ones I need to change.

I have tried following this video:
and also this thread: https://www.electronicspoint.com/forums/threads/spice-file-with-mod-extension.74636/

But neither seems to work, and throws up errors.
 

Papabravo

Joined Feb 24, 2006
14,655
Hi folks, I wish to use a particular MOSFET in a schematic / simulation in LTSpice, and have found the manufacturers supply an encrypted ".mod" file for part I want:
https://toshiba.semicon-storage.com/us/product/mosfet/detail.SSM3K361R.html
I wonder if some one could tell me how to go about actually getting LTSpice to use this model file - starting from the standard NMOSFET part.

I have looked online and tried changing the component attributes using cntrl + right clicking on the component, but im not really sure which ones I need to change.

I have tried following this video:
and also this thread: https://www.electronicspoint.com/forums/threads/spice-file-with-mod-extension.74636/

But neither seems to work, and throws up errors.
According to my information you can use the encrypted file in a simulation if you place it in a directory that LTSpice knows how to find. Where did you place the file?
 

Thread Starter

pmd34

Joined Feb 22, 2014
518
Thanks, I also found that thread, and have included full file path in all variations and it does work. There also seems to be some discrepancy in the various threads whether you use .inc or .include and if you need to change the "attribute prefix".
Does anyone have first hand knowledge of this?
 

eetech00

Joined Jun 8, 2013
2,033
Hi folks, I wish to use a particular MOSFET in a schematic / simulation in LTSpice, and have found the manufacturers supply an encrypted ".mod" file for part I want:
https://toshiba.semicon-storage.com/us/product/mosfet/detail.SSM3K361R.html
I wonder if some one could tell me how to go about actually getting LTSpice to use this model file - starting from the standard NMOSFET part.

I have looked online and tried changing the component attributes using cntrl + right clicking on the component, but im not really sure which ones I need to change.

I have tried following this video:
and also this thread: https://www.electronicspoint.com/forums/threads/spice-file-with-mod-extension.74636/

But neither seems to work, and throws up errors.
hello

encrypted spice files are simulator specific. If its encryption is for use with LTspice, it will work.

If you open the spice file with a text editor it will usually note the simulator it is intended to be used.

if it doesn’t specifically indicate it is for LTspice, it won’t work.

eT
 

Thread Starter

pmd34

Joined Feb 22, 2014
518
I can report that the TS (or someone with the same problem) has found happiness in the LTSpice Group on groups.io
Im not sure I would go that far... but yes I did find the answer in the end.. many thanks for pointing out that group :)
 
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