What is a TVS diode, transient voltage suppressor diode, TVS Zener diode

SMAJ Series 3.3 W 52.8 V Bi-Directional Surface Mount TVS Diode – SMA Website URL: https://www.futureelectronics.com/p/electromechanical–circuit-protection–tvs-diodes/smaj43ca-littelfuse-1062134 Country List: Bangladesh