Do you have a thermistor model for LT SPICE? Possible parameters would be the 25 DEG C resistance and the B 25 / 50 parameter so the resistance changes correctly when running .temp T1 T2 simulations?

  • +1
    •  Super User 
    on Nov 8, 2018 11:45 PM over 2 years ago


    I show one method using a stepped TEMP.

    The default of TEMP is 27°C if not specified. Be aware that TEMP is used by every component in your schematic - especially diodes and transistors change their behavior. You can avoid this, if you use another name e. g. TEMP1.

    .param R25=10k

    .param B=4000

    .param Tk=273.15

    .param T25=25

    Replace the value of the resistsor with this equation enclosed by curly braces.


    .step TEMP 0 50 1

    Best regards,

  • Hi Helmut,

    Thank you, this is exactly what I need. I'm temperature compensating a BJT B-E junction so I want the TEMP command to also control the transistor models. I think ADI should make this a component with a menu  to enter R at 25 deg and B 25 / 50 for people like me who are not familiar with traditional command line SPICE.


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