Electrostatic discharge protection, what is ESD protection, ESD protection circuit

  

SP050xBA Series 8 V 30 pF Uni-Directional SMT TVS Avalanche Diode Array SOT-23-6

https://www.futureelectronics.com/p/electromechanical--circuit-protection--esd-protection/sp0505bahtg-littelfuse-6165302