ESD protections circuit, Electrostatic discharge protection, Video Line Protection

 ESDALC Series 4 Channel 6.1V Uni-Directional Transil™ ESD Protection - SOT-666IP

https://www.futureelectronics.com/p/electromechanical--circuit-protection--esd-protection/esdalc6v1p6-stmicroelectronics-5861901