The AMPA33CA-H with DO-218AB TVS ROHS is an unidirectional amplitude translator manufactured by Polytronics. It has a maximum operating voltage of 30V and a maximum power dissipation of 175mW. It is RoHS compliant, which means it does not contain any hazardous materials such as lead, cadmium, mercury, and hexavalent chromium. The DO-218AB package offers a compact and reliable design that occupies minimal space on the board. Its applications include automotive, medical, industrial, consumer, and telecommunications. It is a stable, reliable, and cost-effective solution for managing voltage spikes.