Diode IFSM estimation

[Fausto2]

Hello

I need to estimate IFSM for certain current pulse.

Does anyone know how to do it?

I found this app note :

Schottky diode avalanche performance in automotive applications (st.com)

But it is not clear the method as intervals are weird :

I ^4 x t = Cste for tsin>10 ms

I ^3 x t = Cste for 20 µs < tsin >10 ms  

I ^2 x t = Cste for tsin<20 ms

and not sure if this is also applicable for standard diodes.

In  addition, I wonder how to derate for different temperature in case datasheet does not contain this information.

Tks.

[Roger SHIVELY]

Hello @Fausto2 ,

There has been a case created to resolve this question and we will be reaching out to you directly.

Regards,
Roger

[Fausto2]

Hello Roger

Ok, unfortunately for the moment I have problems to enter to 

https://ols.st.com/s/case/5003W00000S3iSgQAJ

I already asked for support.