Besides voltage and single or bidirectional the important parameters are the conductance or ESR and the capacitance .
the product of the two would be your figure of merit. The trade off Is that when ESR is reduced capacitance normally increases and capacitive loading the limit signal slew rate.
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Although many TVS diodes are rated for the induced lightning test 10/120 µs , this may be irrelevant for ESD protection where rise times on open cable contact can be sub-nanosecond