after my calculation I found my snubber circuit the resistor is very small, should I the resistor only 2ohm and my capacitor is 0.304uf. is that I still need to use this snubber circuit on my hardware?

 

Hello,

How did you calculate the values?

Here is a PDF on snubber circuits:
Snubber_Circuits.pdf

On these pages from the EDUCYPEDIA you will find more info on subber networks:
http://www.educypedia.be/electronics/Transientsuppression.htm
http://www.educypedia.be/electronics/powerelectronicsdiac.htm

Bertus