Zener diode, Diode circuit, ESD protection, Diode device, what is TVS protection

 ESDLIN1524BJ Series 18.9 V Bi-Directional Transil Diode ESD Protection - SOD-323

https://www.futureelectronics.com/p/electromechanical--circuit-protection--tvs-diodes/esdlin1524bj-stmicroelectronics-1009439