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Calculate the PTC Device Temperature considering the ambient temperature and current flow

Expert 1140 points


I have been designing using a PTC.I observed that my PTC's device temperature is around 81 degree for an ambient of 55 degree and a current of 1.2A flows through it.

How to calculate the device temperature considering the ambient temperature of the PTC and current flowing through it?

We are currently using RUEF160 in our design.


  • Dear Amal - 

    the device you are using is a resettable fuse and not a TI device (to which this forum is dedicated to supporting). 

    Would you like a recommendation for a TI temperature sensor and associated measurement technique?