Tvs diode selection for 3.3V output
Depends. is the maximum clamping voltage below the maximum operating voltage of the device that is to be protected

Vwm - The working voltage. This is an indication. 

Vbr(min) - the minimum voltage the TVS shall start to avalanche

Vbr(max) -  the maximum voltage the TVS shall start to avalanche

Vclamp - the maximum voltage that the TVS will clamp at Ipk