with a TVS you're on the right track.
However I don't see different voltage ratings on the Vishay datasheet.
Try to get a datasheet of the 1,5KExx datasheets.
1,5KExx (check out NXP semiconductors) are available for a wide range of fixed breakdown voltages and they are also available as unipolar and bipolar devices.
I've been using bipolar TVSs with a small inductor (47μH) followed by a 10μF electrolytic cap at the input of the voltage regulator to be used in MCUs or CMOS devices for automotive applications with no failures.