TVS diode array, protection equipment, Electrostatic protection, TVS Zener diode

 USBLC6 Series 4 Line 6 V Uni / Bi-Directional ESD Protection - SOT-23-6

https://www.futureelectronics.com/p/electromechanical--circuit-protection--esd-protection/usblc6-2p6-stmicroelectronics-8144329